Top 10 Subaru Outback Problems by Mileage in 2026: $0 to $5,000, and When Each One Hits

Subaru is one of the few manufacturers in this series that published a number for when oil consumption stops being normal.

Under the settlement notice in Yaegar v. Subaru of America, if a dealer-performed oil consumption test shows a vehicle consuming more than one-third of a quart in 1,200 miles, the applicable service bulletin repair is performed at no charge. That single figure is more useful than any amount of forum argument about what counts as excessive, and it remains the reference point even though the warranty window itself has closed for most affected vehicles. Subaru has since added a second one for windshields, and the ten extensions owners miss lists both with their exact terms.

The second thing worth knowing is that the live CVT settlement everybody quotes is not an Outback document. The action that extended powertrain coverage for failures involving a faulty MPT clutch — including the transmission shaft — for eight years or 100,000 miles from the in-service date, transferable, with a CVT replacement where an initial repair does not resolve the problem, covers the 2019-2020 Ascent and nothing else; Subaru's bulletin 16-146-24 names no other model. What the Outback actually has is Subaru's own CVT warranty extension: bulletins 16-107-17 (June 2017) and 16-115-18 (September 2018) took 2010-2017 Legacy and Outback CVTs from five years or 60,000 miles to ten years or 100,000 miles from the original warranty start date. That clock has run out on 2010-2015 cars, is running out on 2016s, and gives a 2017 under 100,000 miles until its tenth anniversary in 2027. And a third document is genuinely open: the windshield extension on 2020-2022 Outbacks, eight years or 100,000 miles from in-service, one replacement.

Three clocks, one already stopped, and most owners know about none of them.

By the end of this guide you will know which of the ten failures is due at your mileage, what each costs in 2026, which coverage might still apply to your VIN, and the cheap cause that gets skipped when the expensive one is quoted first.

Claims marked 🟢 rest on a settlement or case listed in the Sources section, with the reference. Claims marked ⚪ are shop-price estimates from published repair-cost sources — estimates, and labeled as such.

I built PulsCar — an AI tool that reads car problems from a 30-second recording — after a $380 "full diagnostic" in Phuket in 2025 led to roughly $6,000 over six months across several shops, and the sound never went away (the story is on the About page).

Engine generation and in-service date beat mileage here

Find your engine generation and your in-service date first — on this vehicle those two facts decide more than mileage does. Every entry has the same parts: the tell, what it actually is, the 2026 price, the cheap cause that gets skipped, and where this does not apply. Two entries include a do-it-yourself path with honest limits. Every entry ends with the exact sentence to say at the counter.

One rule overrides everything: on a Subaru, measure before you argue. Oil consumption on this brand generates more unproductive conversation than any other topic in this series, and the settlement gave everyone a way out of it — a defined test, performed by a dealer, with a defined threshold. Bring the number, not the impression. GM owners had the same argument over the 2.4 Ecotec, and the Equinox guide quotes GM's own definition of excessive consumption.

First: which Outback do you actually have?

Older EJ-series engines. The head gasket generation. This is the reputation that followed Subaru for years, and the repair is expensive less because of parts than because the boxer layout makes access laborious.

FB-series engines, 2013 onward on the Outback. The 2010-2012 Outback used the older EJ253; the FB25 arrived for 2013. The Yaegar settlement class was five specific groups — 2011-2014 Forester 2.5, 2013 Legacy 2.5, 2013 Outback 2.5, 2012-2013 Impreza 2.0 and 2013 XV Crosstrek 2.0 — so on the Outback it named the 2013 2.5 and nothing else. Later FB-engined Outbacks can consume oil; they were never in the class.

2016-2017 vehicles at the tail of Subaru's ten-year CVT extension. Bulletins 16-107-17 and 16-115-18: ten years or 100,000 miles from the original warranty start date. Ending car by car through 2027.

2020-2022 vehicles with the windshield extension. Eight years or 100,000 miles from in-service, one replacement of the original windshield, effective February 5, 2025.

Newer vehicles. Outside both settlements, with less settled complaint histories. Treat published failure mileages for these with caution, including ours.

Turbocharged variants. Add turbo plumbing and heat-related items to any of the above, and shorten oil intervals accordingly.

The 5-minute check that dates your Outback better than the odometer

1. Find your in-service date. Door jamb sticker, owner portal, or the selling dealer. On a 2016-2017 car this decides whether item 4 is still free; on a 2020-2022 car it sets the windshield clock.
2. Pull the dipstick and note the level against the marks. Below the marks with under 1,200 miles since the last top-up → item 3, and start a written log today.
3. Start it cold and watch the exhaust for the first minute. White vapor that persists beyond warm-up, especially with a sweet smell → item 2, head gasket.
4. Check the coolant reservoir for any oily film or discoloration. Either points at item 2.
5. From a complete stop, accelerate gently to 25 mph, twice. A shudder that comes and goes with throttle → item 4.
6. Accelerate to 45 mph and listen with the radio off. A whine rising with road speed rather than engine revs → a later CVT stage, and not a wait-and-see.

Eight Outback situations, and which is yours

"It's using oil and I keep topping it up." → Item 3, and stop doing it silently. Get the test documented.

"Sweet smell and the temperature gauge is creeping." → Item 2, and pull over rather than press on.

"It shudders pulling away from a stop." → Item 4, and on a 2016-2017 car check the in-service date and mileage before paying anyone.

"There's a whine that rises with speed." → Item 4 at a later stage, and fluid will not resolve it.

"Rattle at cold start." → Item 5, timing chain and oil pressure, and check the level tonight.

"Humming at 45 mph that changes when I steer." → Item 6, wheel bearing, and rotate the tires first.

"Clunk over bumps." → Item 7, and it is usually a link rather than a strut.

"P0420 and a converter quote." → Item 10, and demand Mode 6 values first.

What actually determines a Outback number

Your engine generation. EJ means head gaskets are the reserve item. FB means oil consumption is. They are different budgets and different failure timelines.

Your in-service date. On 2016-2017 vehicles this decides whether Subaru's ten-year CVT extension still applies, and on 2020-2022 vehicles it sets the eight-year windshield clock. Both run from that date, not from your purchase.

Whether consumption was ever documented. An undocumented top-up habit is invisible to any warranty, settlement or resale conversation. A dated log with dealer test results is an asset.

Boxer layout labor. Horizontally opposed engines put the heads where access is awkward. That is why head gasket work on this brand costs more than the same job on an inline engine, and it is a structural fact rather than a dealer markup.

Independent versus dealer. Typically 30-50% on routine labor — but settlement and warranty work must be performed by an authorized Subaru retailer, and the oil consumption test itself is defined as a dealer procedure. The full comparison maps which jobs go where.

All-wheel drive everywhere. Every Outback is AWD, which means tire matching matters more than on most vehicles: mismatched tire circumference stresses the drivetrain continuously, and it is a genuine cause of driveline complaints.

The ten Outback problems, in the order they arrive

1 · Front brakes — 30,000 to 70,000 miles

The tell. A thin high squeal at low speed that stops under hard pressure — the wear indicator at roughly 3mm. Grinding is low, gritty and felt through the pedal.

What it actually is. Normal consumption on a wagon that is heavier than a sedan and frequently used in weather that shortens pad life.

The cheap cause that gets skipped. A squeal only on the first two damp-morning stops is surface rust — free. Ask for pad thickness in millimeters; above 4mm you are buying time you already have.

Where this does not apply. Vehicles driven mostly on highways at steady speed will run far past the top of this window, and a shop quoting brakes on mileage alone rather than on measurement should be asked for the number.

Fix it yourself — realistic. Front pads and rotors are a genuine driveway job: $120-$220 in parts, two to three hours, jack stands mandatory. The honest limit: uneven wear side to side or a seized slide pin means a caliper — stop, because a dragging caliper destroys new parts within weeks.

At the shop — say this: "What's the actual pad thickness in millimeters front and rear, and are the rotors above minimum spec? If the pads are over 4 millimeters I'd rather wait."

2 · Head gaskets on EJ-series engines — 90,000 to 150,000 miles

The tell. A sweet smell after driving. Coolant disappearing with no puddle. White vapor from the exhaust that persists after warm-up. An oily film or discoloration in the coolant reservoir. A temperature gauge that climbs under load and settles when you ease off.

What it actually is. The gasket between cylinder head and block loses its seal, letting combustion gases into the coolant or coolant into the cylinder. On a horizontally opposed boxer engine the heads sit either side of the block in a tight bay, which is why this job is labor-heavy rather than parts-heavy.

The cheap cause that gets skipped. A cooling system pressure test, before anything. A failing radiator cap, a weeping hose or a water pump can produce coolant loss that looks like the start of a gasket story and costs a fraction of it. Fifteen minutes, and it either rules the cheap answer in or out.

Where this does not apply. FB-series engines are not the head gasket generation; their story is item 3. If you have an FB engine and somebody quotes head gaskets for oil consumption, ask which failure they are actually describing.

At the shop — say this: "Can you pressure-test the cooling system and run a combustion gas test on the coolant before quoting head gaskets? I want the cheap causes ruled out and the test result shown to me."

On this vehicle three drivetrain symptoms mean three very different bills: a shudder from a stop is early CVT, a whine rising with road speed is a later stage, and a rattle at cold start is oil pressure at the timing chain. Only the last one exists with the car parked — a shudder is felt and a road-speed whine needs the road, so those go to the dealer's test drive and the VIN clock, not to a recording. For the cold-start rattle, film the engine running, parked, for thirty seconds and PulsCar's free check returns an Engine Health Score, a system-by-system status, a likely cause, a severity and a repair-cost estimate, or says "inconclusive" when the clip cannot support a verdict. It does not decide whether the car is safe to drive. Free, no card, no subscription, about ten minutes. The report arrives by email as a PDF, so use the address you actually read.

3 · Oil consumption on FB-series engines — 50,000 to 110,000 miles

The tell. The dipstick drops between changes with no visible leak. Owners commonly describe topping up between services and assuming it is normal — which is precisely the habit the settlement threshold was written to settle.

What it actually is. The lawsuit alleged defective piston rings causing the engines to burn a substantial portion of their oil, damaging engine parts and creating a risk of stalling. It concerned Subaru FB engines across Forester, Outback, Legacy, Impreza and Crosstrek, roughly 2011 to 2015, and roughly 665,000 vehicles.

The number that ends the argument. Under the settlement notice, an oil consumption test performed by an authorized Subaru retailer showing consumption of more than one-third of a quart in 1,200 miles triggered the applicable service bulletin repair at no charge. Even now that the window has closed, that figure is the clearest available definition of excessive on this brand, and a documented test result is worth having in any conversation about a repair or a resale.

The honest note about timing. The extension moved the powertrain warranty from five years or 60,000 miles to eight years or 100,000 miles, whichever came first, running from the original in-service date. Vehicles already past those limits at the notice date received one further year. Both windows have now closed for the affected model years, so a consumption repair in 2026 is an owner expense.

The cheap cause that is free, and still worth doing. The documented test and a dated log. Consumption that is measured is a maintenance decision; consumption that is merely noticed is an argument. And a car with documented consumption history is a materially easier car to sell honestly.

Fix it yourself — the free half. Check the level every second fuel fill, keep a quart in the trunk, and write down the date and mileage each time you add oil. The honest limit: consumption plus blue smoke at start-up, or plus any knocking, stops being a monitoring exercise and needs a compression and leak-down test before money is spent.

At the shop — say this: "I'd like a documented oil consumption test against the one-third of a quart in 1,200 miles standard, with the result written on the invoice, before we discuss any repair."

4 · CVT shudder, hesitation and the ten-year extension that is running out — 30,000 to 100,000 miles

The tell, in order. A shudder or judder during light acceleration from a stop. Then hesitation before the vehicle responds to the accelerator. Then a whine or drone that rises with road speed rather than engine revs. Owners of the Ascent, whose settlement is described below, also reported repeated repair attempts before a replacement was performed.

What it actually is. Degraded fluid and early wear at the chain-and-pulley interface on Subaru's Lineartronic CVT — a fluid-condition problem before it is a hardware problem, and a hardware problem once the whine has started.

The coverage, stated precisely — and which document it is. Subaru extended the CVT warranty on its own initiative, "not in response to any specific condition," in two dealer bulletins: 16-107-17 (June 21, 2017) for 2010-2015 Legacy and Outback 2.5 CVTs and the 2015 3.6, and 16-115-18 (September 6, 2018) for 2016-2017 Legacy and Outback 2.5 and 3.6 CVTs, in both cases "from the original five (5) years or sixty thousand (60,000) miles … to ten (10) years or one-hundred thousand (100,000) miles (whichever comes first)" from the original warranty start date. Do the sum: a 2015 Outback delivered in late 2015 ran out in late 2025; a 2016 delivered in mid-2016 runs out in mid-2026; a 2017 delivered in mid-2017 has until mid-2027 — always subject to the 100,000-mile cap, which a commuter reaches first. Cars beyond the limits when the letters went out got one further year, long past. The extension covers the original or a genuine Subaru replacement CVT only, not salvage or third-party rebuilt units, and needs no mandatory inspection: "Only those vehicles where the customer is currently experiencing a concern with the CVT should be inspected."

The settlement this is not. The eight-year, 100,000-mile extension for failures caused by a faulty Multi-Plate Transfer (MPT) clutch, transferable, with a CVT replacement where an initial repair fails, is the Ascent CVT class settlement in the District of New Jersey, implemented by Subaru bulletin 16-146-24 — applicability "2019-20MY Ascent" and nothing else. An earlier version of this guide presented it as Outback coverage. It is not. But a 2019 or 2020 Outback is not left with only its standard powertrain warranty either: Subaru bulletin 16-155-25R, dated 1 May 2025 and revised 24 April 2026, extends CVT coverage to 10 years or 100,000 miles and lists the 2019 Legacy and Outback 2.5L and the 2020 Legacy and Outback 2.4L alongside the Forester, Ascent and Impreza (NHTSA document 11032037). Two different documents, two different things: the Ascent settlement pays for MPT clutch failures, the Subaru extension covers the CVT itself. Ask for 16-155-25R by number.

The cheap cause that is free. On a 2016-2017 car, the Subarunet Vehicle Coverage Inquiry before any paid diagnosis — the bulletin makes it mandatory for the retailer "before proceeding with any inspection or repair." On every other Outback, fluid condition first: a Lineartronic fluid exchange is a genuine early step, and a poor substitute for a repair once the drivetrain is whining.

Where this does not apply. 2010-2015 cars are past ten years, 2018 and later cars were never in either bulletin, and the Ascent settlement is not yours. There the ordinary sequence applies: fluid condition and cooling first, then a diagnosis establishing which stage you are at. On any Subaru, note that mismatched tire circumference stresses the AWD drivetrain continuously and is a genuine contributor to driveline complaints — check that all four tires match before blaming the transmission.

At the shop — say this: "Please run a Vehicle Coverage Inquiry on Subarunet for the CVT warranty extension under bulletin 16-115-18 and read me the end date and mileage cap for this VIN. I'd like that answered before any paid diagnosis or fluid service."

5 · Cold-start rattle and timing chain — 60,000 to 120,000 miles

The tell. A rattle for one to three seconds at cold start that fades as oil pressure builds. The diagnostic detail is the trend: a noise that has grown from one second to three over months points at chain and guide wear, while a consistent short rattle points at the tensioner not holding pressure.

What it actually is. The chain tensioner is hydraulic and runs on engine oil pressure. Low or degraded oil means it cannot take up slack at start-up, and the chain slaps its guides.

The cheap cause that gets skipped, and it is nearly free. Fresh oil of the correct viscosity, then a week of driving to see whether the rattle shortens. On this vehicle there is a specific compounding link worth naming: an engine that is consuming oil is an engine running lower on oil pressure, so item 3 and item 5 are the same story at two removes.

Where this does not apply. A rattle that changes with road surface rather than engine speed is not this — that is heat shields or exhaust hangers, and it is far cheaper. The ticking-noise guide separates the sounds.

At the shop — say this: "Fresh oil at the correct spec first, then let's re-check whether the rattle is shorter after a week. And please record the oil level, because if this engine is consuming oil that's part of the same problem."

What actually counts as excessive oil consumption on a Subaru, in numbers? The class-action settlement gave the clearest answer on any brand in this series: if an oil consumption test performed by an authorized Subaru retailer shows the vehicle consuming more than one-third of a quart of engine oil in 1,200 miles, the applicable technical service bulletin repair was performed at no charge under the extended warranty. That is a measurable standard rather than a judgment call, and it outlives the warranty because it remains the reference point at a service counter. The test procedure matters as much as the number: a measured fill, a sealed dipstick, a defined distance driven, and a re-measurement, all performed by the dealer rather than estimated at home. An owner who arrives with a documented result is having a different conversation from one who arrives with an impression. Oil consumption is silent; PulsCar's free check hears only the idle, so the dealer test is the evidence.

6 · Wheel bearings — 70,000 to 130,000 miles

The tell. A hum from around 40-50 mph rising with road speed and changing when you steer gently — that steering sensitivity names the side.

What it actually is. Rolling elements wear and the assembly develops play. It worsens steadily and can eventually affect wheel-speed sensor readings.

The cheap cause that gets skipped — and the Subaru-specific one. A cupped tire produces nearly the same drone, so rotate and drive. But on a permanently all-wheel-drive vehicle there is a second check that generic advice omits: all four tires should match in make, model and remaining tread depth. Mismatched circumference makes the drivetrain work continuously against itself, which produces noise, heat and genuine wear. Measure the tread on all four before buying any driveline part.

The free confirmation. With the vehicle safely supported, spin the wheel by hand listening for a gritty rumble, then rock it at 12 and 6 o'clock feeling for play.

Where this does not apply. If the hum does not change with steering input, look at the drivetrain instead — including item 4.

At the shop — say this: "The hum changes when I steer, so I think a bearing — but can we rotate the tires, measure tread depth on all four, and show me the play by hand before ordering parts?"

7 · Suspension: struts and the clunk that isn't them — 80,000 to 140,000 miles

The tell. A clunk or knock over speed bumps and expansion joints, felt more than heard, from one corner. Later: floatiness over crests and uneven patchy tire wear.

What it actually is. Struts fade rather than fail, which is why most owners never notice until a newer vehicle feels startlingly composed.

The cheap cause that gets skipped. The clunk over bumps is more often a sway bar end link than a strut — $40-$90 in parts, $150-$250 installed, against $700-$1,200 for a strut pair, and confirmed by hand in ninety seconds on a lift.

Fix it yourself — the honest split. End links are a genuine driveway job: two bolts per side, an hour, ordinary tools. The honest limit: never disassemble a strut to reuse the spring without a proper spring compressor and real experience — a compressed coil spring stores enough energy to kill. Buy the complete assembly or pay a shop.

Where this does not apply. The Wilderness trim rides higher on its own struts and springs; order parts to that trim rather than to the standard car, because a standard-height assembly changes the geometry it was built around.

At the shop — say this: "Before we discuss struts, can you check the sway bar end links and strut mounts on the lift and show me the play? And if we do struts, are you quoting complete assemblies?"

8 · Air conditioning — 80,000 to 140,000 miles

The tell. Air that starts cold and fades warm after ten minutes, or never gets cold. Sometimes a clutch cycling rapidly, or no engagement click.

What it actually is. Refrigerant is not consumed, so a system that is low is a system that leaks. The condenser sits at the front and takes road debris — and on a vehicle frequently driven on gravel, stone damage is a genuinely likely explanation worth checking first.

The cheap causes. A failed relay gives no cold air with a healthy system. A blend door actuator produces a similar complaint from inside the dash.

Where this does not apply. The Outback has not been sold as a hybrid in the United States, so the electrically driven compressor found on some rivals does not enter the diagnosis here: this is a belt-driven compressor with a clutch, and a clutch that never clicks in is a different fault from one that cycles.

At the shop — say this: "Was a leak test performed, and where exactly is it leaking? Is there stone damage on the condenser, and can you check the relay before condemning the compressor?"

Do all Subarus really blow head gaskets? Not any more, and the distinction that matters is the engine family rather than the badge. The head gasket reputation belongs to the older EJ-series boxer engines, where the failure was common enough to define the brand for a generation of owners. The FB-series engines that replaced them have a different characteristic problem entirely: oil consumption, which produced its own class action and a settlement defining excessive as more than one-third of a quart in 1,200 miles. So the honest answer is that Subaru swapped one well-known engine issue for another. What that means practically is that a buyer should ask which engine a specific vehicle has and budget for that family's item — head gaskets at $1,500 to $2,500 on an EJ, consumption monitoring and possible repair on an FB. PulsCar's free sound check is a first pass on either idle, not the deciding test.

9 · Engine mounts — 90,000 to 150,000 miles

The tell. Vibration through the seat and wheel at idle, clearly worse in Drive than in Park. A thunk shifting between Drive and Reverse.

What it actually is. Rubber and liquid-filled isolators perish with age and heat. A boxer engine's inherent balance means owners often notice mount wear later than they would on an inline four, because the baseline vibration was lower to begin with.

The test that costs nothing. Foot firmly on the brake, shift to Drive, hold ten seconds, feel. Then Reverse. Then Park. Present in gear and absent in Park is a mount.

Where this does not apply. If a shudder appears as you pull away rather than while stationary in gear, that is item 4, not this — same sensation, very different bill.

At the shop — say this: "It's worse in Drive than Park with the brake held, and it doesn't shudder as I pull away. Can you check the mounts on a lift with a pry bar and tell me which are actually failed?"

10 · Catalytic converter — 120,000 miles and up

The tell. A steady check-engine light with P0420, often with no drivability symptom. Sometimes a faint sulfur smell. Frequently the first sign is failing an emissions inspection.

What it actually is. The computer compares the oxygen sensors before and after the converter; when their readings converge, the code sets. That does not say the converter is broken.

The cheap causes, all three. A lazy downstream sensor ($180-$350 installed). A small exhaust leak upstream. Sustained oil consumption poisoning the substrate — which on an FB engine with item 3 running is a realistic chain, and one worth naming before buying the expensive part.

The one demand that changes the conversation: Mode 6. Mode $06 reports the catalyst monitor's actual test result as a number against threshold. Ask for those values in writing before authorizing anything. Our guide to expensive codes covers the pattern in full.

Where this does not apply. If oil consumption is ongoing and undocumented, a new converter is money spent into the same chain. Resolve or at least document item 3 first.

At the shop — say this: "Before we replace the converter I want the Mode 6 catalyst values against threshold, the downstream sensor actually tested rather than assumed, and the oil consumption question addressed first."

The Outback price ladder, from the bottom up

Read it from the bottom up. Two of the bottom four lines were repairs somebody else paid for while the clocks ran — one clock has stopped, and the other, on a 2016-2017 car under 100,000 miles, may still have months on it. The check that establishes which costs nothing.

Your number, by which Outback you drive

Two rows there invert the guide. An owner with mismatched tires may be chasing a drivetrain complaint that is not a fault at all, and the fix is tires rather than parts. And a 2017 owner under 100,000 miles is in the strongest position on the drivetrain side for a few more months, because the ten-year CVT extension has not yet run out on every car — while a 2019 or 2020 owner has the 10-year CVT extension of bulletin 16-155-25R to ask for by number.

Should you buy a used Outback, and which years?

Most people searching for Outback problems are deciding whether to buy one, so here it is directly.

What the reputation gets right. Two real, documented, expensive patterns exist: head gaskets on older EJ engines and oil consumption on FB engines, which on the Outback means the 2013 2.5 named in the settlement class and the later FB cars that were not. Neither is folklore; both produced litigation, and the second produced a settlement covering five specific model groups.

What the reputation gets wrong. Both problems are now well past their peak, both are checkable before purchase, and one of them left behind a precise definition of what counts as excessive — which is more than most brands offer. A vehicle with a documented consumption repair is in a better position than an identical vehicle with a quiet top-up habit, and only the paperwork tells them apart.

Where the live money is. 2020-2022 vehicles carry the windshield extension — eight years or 100,000 miles from in-service, one replacement of the original glass, and it goes with the car. 2016-2017 vehicles under 100,000 miles carry the last months of Subaru's ten-year CVT extension. Neither is the Ascent settlement, which does not touch this car. Those are genuine assets attached to specific used cars, and almost nobody prices them in.

The five-minute pre-purchase procedure:

• Get the in-service date, not just the model year. It sets every warranty clock.
• Ask for oil consumption history, and specifically whether a dealer test was ever performed.
• Pull the dipstick yourself and ask how often oil is added between services.
• Check the coolant reservoir for oily film on any EJ-engine vehicle.
• Accelerate gently from a full stop three times and feel for shudder.
• Measure tread depth on all four tires. Mismatched tires on an AWD vehicle are both a cost and a warning about how the car was treated.

The short version: an Outback with a documented repair history and four matching tires is a straightforward used buy. A 2017 under 100,000 miles, or a 2020-2022 with its original windshield, is the one to look at hardest, because those are the clocks still running.

What a shop actually does with a Outback, checkpoint by checkpoint

Checkpoint 1 — the date question. "What is my in-service date?" On a 2016-2017 vehicle it decides whether item 4 still costs anything; on a 2020-2022 vehicle it sets the windshield clock.

Checkpoint 2 — the measurement question. "Can we do a documented oil consumption test against the one-third quart per 1,200 miles standard?" Bring the number rather than the impression.

Checkpoint 3 — the diagnostic fee. "What's the charge, and does it credit toward the repair?" Expect $80-$150 independent, $120-$200 dealer, usually credited.

Checkpoint 4 — the cheap cause. "Was it ruled out, and how?" Pressure test before head gaskets. End links before struts. Tread matching before driveline parts. Fresh oil before timing components.

Checkpoint 5 — the evidence. "Can you show me?" Millimetres of pad, combustion gas test result, play by hand, Mode 6 values, the consumption test paperwork.

Checkpoint 6 — the authorization ceiling. "Call me before anything over this figure." The dispute guide covers what to do when that gets ignored.

Three diagnostic traps that cost Outback owners the most

Trap 1: the covered transmission paid for privately. The situation: shudder from a stop on a 2017 Outback at 68,000 miles. What the shop says: "CVT fluid service, $350, and we'll see how it goes." What is really happening: if the original warranty start date puts the vehicle inside Subaru's ten-year, 100,000-mile CVT extension under bulletin 16-115-18 — and a 2017 delivered in 2017 is, until 2027 — inspection and repair at a Subaru retailer are covered. An independent shop cannot claim it. Price versus bill: potentially $0 against $350 now and thousands later. Your protective question: "What is my warranty start date, and does a Subarunet Vehicle Coverage Inquiry show the CVT extension still open on this VIN?"

Trap 2: the top-up habit that was never measured. The situation: an owner adding a quart every couple of months for two years, assuming it is normal for the brand. What the shop says: nothing, because it never comes up as a complaint. What is really happening: the settlement defined excessive as more than one-third of a quart in 1,200 miles, measured by a dealer. Without a test, there is no evidence — for a warranty claim while the window ran, or for an honest resale afterward. Price versus bill: a free or cheap documented test, against an undocumented problem that follows the car. Your protective question: "Can we perform a documented oil consumption test and put the result on the invoice?"

Trap 3: the head gasket quoted before the pressure test. The situation: coolant disappearing on an older EJ-engine Outback. What the shop says: "These are known for head gaskets. Fifteen hundred to twenty-five hundred." What is really happening: they may well be right — but a radiator cap, a hose or a water pump can produce the same coolant loss, and a pressure test plus a combustion gas test takes fifteen minutes and either confirms or eliminates the expensive answer. Price versus bill: $60-$140 of testing, against $1,500-$2,500 authorized on reputation. Your protective question: "Can you pressure-test the system and run a combustion gas test on the coolant, and show me the result, before we commit to gaskets?"

Three Outback quotes, decoded

These are composite scenarios, not individual customers — the mileages, quotes and outcomes are typical of the pattern each item describes, assembled so the arithmetic is visible. We do not publish invented testimonials, so nothing below is presented as a specific person's story.

Scenario 1 — the coverage nobody mentioned, with months left. A 2017 Outback shuddering from a stop at 68,000 miles, quoted for a fluid service at an independent shop. Subaru's ten-year, 100,000-mile CVT extension runs from the original warranty start date, which on that vehicle is still open into 2027 — and only a Subaru retailer can perform the covered work. The same car a year later, or the same shudder on a 2019, has no extension behind it at all. Lesson: on a Subaru of this age the first question is a date, not a diagnosis — and the date is the car's, not the model year's.

Scenario 2 — the consumption that was never a number. An FB-engine Outback topped up quietly for two years. Under the settlement, a dealer test showing more than one-third of a quart in 1,200 miles triggered a free repair. Without a test there was never a claim, and after the window closed there was never going to be one. Lesson: on this brand, measurement is the whole difference between a warranty conversation and a maintenance habit.

Scenario 3 — the gasket that was a radiator cap. An older EJ Outback losing coolant, quoted at $1,800 for head gaskets on the strength of the model's reputation. A pressure test and a combustion gas test cost a fraction of that and answer the question definitively in either direction. Lesson: a well-known failure mode is a reason to test for it, not a reason to skip the test.

How can you tell a real Outback failure from an unnecessary repair quote? Two checks do most of the work. First the date check: this vehicle has two clocks, an oil-consumption settlement that has expired and Subaru's own ten-year, 100,000-mile CVT extension, now ending car by car on 2016 and 2017 vehicles. Establishing that date before any paid diagnosis can decide the entire bill. Second the measurement check, unusually well defined on this brand: excessive oil consumption means more than one-third of a quart in 1,200 miles on a dealer test, and bringing that standard to a counter replaces an argument with a number. Beyond those, ordinary discipline applies — a pressure test before head gaskets, sway bar links before struts, matching tread depth on all four tires before any driveline part, Mode 6 values before a converter. PulsCar's free check adds an independent first read on the engine's sound, not on eligibility.

Four Outback playbooks for where you are right now

"It shudders from a stop and it's a 2016 or 2017 under 100,000 miles." Find the warranty start date before you authorize anything, including a fluid service. If you are inside the ten-year window, the covered work must be performed by a Subaru retailer — and if it is a 2018 or newer, there is no extension to find, so go straight to the stage question.

"I keep topping up the oil." Stop doing it silently. Ask for a documented consumption test measured against one-third of a quart in 1,200 miles, and keep the result. Even outside the warranty window, that paperwork changes how honestly you can sell the car and how seriously a shop takes you.

"Coolant is disappearing on an older engine." Cooling system pressure test and combustion gas test before anything else is quoted. If it is gaskets, it is gaskets — but find out for $100 rather than assuming for $1,800.

"Nothing's wrong, I just bought it." Write your in-service date somewhere you will find it. Measure tread depth on all four tires and keep them matched. Start a dated oil log. Those three habits address the three most expensive items in this guide.

After the Outback repair: verify, then prevent

Verify within a week. Shudder: same gentle pull-away, same road, mileage noted. Head gasket work: coolant level stable over three weeks, no vapor after warm-up, no oily film in the reservoir. Bearing: hum gone at the speed where it lived. Converter: light stays off through two full drive cycles.

On any covered repair, get the coverage documented against the VIN. Extension work should be recorded with the bulletin number, and that record is what makes the car easier to sell later.

Keep the oil log going even after a repair. Consumption that returns is far easier to argue about with two years of dated entries than with a memory.

Prevent the next one. Correct viscosity oil at honest intervals — it protects the timing chain as well as the engine. Four matching tires, always. A cooling system inspection at 100,000 miles on any EJ engine. Those three lines address items 2, 5 and 6.

The Outback plan: 10 minutes, today, this week

Next 10 minutes — free:

1. Find your in-service date and write it down next to your odometer reading.
2. Pull the dipstick and start a dated log — date, mileage, and whether you added oil.
3. Measure tread depth on all four tires and note whether they match.

Today:

4. If your vehicle is a 2016 or 2017 under 100,000 miles, call a Subaru dealer with the VIN and ask for a Vehicle Coverage Inquiry on the CVT warranty extension — ten years from the original warranty start date. If it is a 2020-2022 with a cracked original windshield, ask about the windshield extension before any glass shop.
5. If there is a shudder, whine or cold-start rattle, record thirty seconds properly and run it through a free sound check to identify which one you have.
6. If you have a quote, run it against the cheap-cause paragraph for that item and use the script.

This week:

7. Book a documented oil consumption test if you are adding oil between services — measured against one-third of a quart in 1,200 miles, result on the invoice.
8. Book a cooling system pressure test if you own an EJ engine past 100,000 miles and have not had one.
9. Bank a baseline recording of the engine while it is healthy, so any future change is a comparison rather than a guess.

Camshaft sensor codes on the 2013 FB engine

🟢 Subaru issued a family of bulletins for 2011-2013 FA and FB engines with "difficulty starting, rough idle" and camshaft position or misfire codes — P0340, P0341, P0345 or P0346 alongside P0301-P0304. The 2013 Outback and Legacy are covered by 11-122-12, and 11-130-13R gives inspection and repair procedures for the whole family. Toyota's companion bulletin for the FA-engined 2013 Scion FR-S names the cause: "camshaft position sensor clearance being out of specification." On a 2013 Outback with these codes, ask whether the bulletin was checked before a sensor is bought; see our P0340 guide.

New rear oxygen sensors for 2020-2024 Outbacks

🟢 Subaru's 09-115-24R (May 2024, revised April 2025) supplies a redesigned rear oxygen sensor for 2020-2024 Outback and Legacy 2.5L models with P0137, P0138, P0140 or P0141, with a coating meant to prevent internal cracking that can cause short or open circuits. The part number did not change, so the new one is identified by the Denso number engraved on it. See our P0135 guide.

Sources and documents

Primary documents only. Where a claim in this guide is marked 🟢, it rests on one of the items below, and the reference is given so you can pull it yourself. Claims marked ⚪ are shop-price estimates compiled from published repair-cost sources — estimates, not measurements from a dataset we own.

1. Yaegar v. Subaru of America, Inc. et al., No. 1:14-cv-04490 (D.N.J.) — heard before Chief Judge Jerome B. Simandle. Oil consumption class action concerning Subaru FB engines, alleging defective piston rings causing engines to burn a substantial portion of their oil, damaging engine parts and creating a risk of stalling.
2. Settlement warranty extension terms — powertrain warranty extended from five years or 60,000 miles to eight years or 100,000 miles, whichever comes first, for repairs by an authorized Subaru retailer needed to correct excessive oil consumption. Vehicles already exceeding those limits at the notice date received a one-year extension from the notice date.
3. Settlement class notice — consumption threshold — "If the oil consumption test shows that your vehicle consumes more than one-third (1/3) of a quart of engine oil in 1,200 miles, the dealer will perform the applicable TSB Repair at no charge." The test must be performed by an authorized Subaru retailer. Class notice document
4. Settlement reimbursement provisions — payments for oil consumption test costs, service-bulletin repairs, engine oil up to six quarts per vehicle, and in certain circumstances rental and towing costs.
5. Settlement class vehicles — the class was defined by model, year and engine: 2011-2014 Forester 2.5, 2013 Legacy 2.5, 2013 Outback 2.5, 2012-2013 Impreza 2.0 and 2013 XV Crosstrek 2.0, all with FB engines. Final approval August 31, 2016. On the Outback the class is the 2013 2.5 only.
6. Subaru Service Bulletin 16-107-17, "CVT Warranty Extension" (June 21, 2017) — applicability includes "2010-15 Legacy/Outback 2.5L NA CVT" and "2015 Legacy/Outback 3.6L NA CVT": coverage "from the original five (5) years or sixty thousand (60,000) miles (whichever comes first) to ten (10) years or one-hundred thousand (100,000) miles (whichever comes first)," with one further year for vehicles already beyond the limits when the letters were mailed; "ALWAYS perform a Vehicle Coverage Inquiry on Subarunet." Bulletin on NHTSA
7. Subaru Service Bulletin 16-115-18, "CVT Warranty Extension" (September 6, 2018) — "2016-17MY Legacy/Outback 2.5L NA CVT" and "2016-17MY Legacy/Outback 3.6L NA CVT," same ten-year, 100,000-mile terms "from the original warranty start date"; "There is no mandatory inspection required for this warranty extension." Bulletin on NHTSA
8. Subaru retailer bulletin "Windshield Warranty Extension" (December 17, 2024) — "MY 2020-2022 Outback," 2019-2022 Forester, 2020-2022 Legacy, 2019-2022 Ascent; effective February 5, 2025, "eight (8) years or 100,000 miles, whichever occurs first, measured from the in-service date," "limited to a one-time replacement of the original windshield"; reimbursement claims "until January 31, 2025"; salvage titles, non-Subaru glass and non-qualifying cracks excluded. Bulletin on NHTSA
9. Subaru Service Bulletin 16-146-24 (revised January 30, 2024) and the Ascent CVT class settlement, D.N.J. No. 1:21-cv-02100 — the eight-year, 100,000-mile MPT clutch extension, transferable, applicability "2019-20MY Ascent." Listed so the reader can see it does not name the Outback. Bulletin on NHTSA
10. Subaru 11-122-12 and 11-130-13R (2011-2013 FA/FB engines: cam position and misfire codes) and Scion S-SB-0033-13 (camshaft position sensor clearance).
11. Subaru Service Bulletin 09-115-24R (May 2024, revised April 2025; rear oxygen sensors; NHTSA 11017437).

Coverage and eligibility depend on your VIN, model year and original in-service date. The oil consumption extension has expired; the ten-year CVT extension has run out on 2010-2015 cars and is ending on 2016-2017 cars through 2027; the windshield extension runs eight years from in-service on 2020-2022 cars. Verify with an authorized Subaru retailer before authorizing paid work.

For the sounds behind these items: the complete noise index, engine knocking, ticking, grinding when braking and shaking at idle. For the money side: what a diagnostic costs, dealer versus independent, signs you're being overcharged and how to dispute a bill. Sister guides: RAV4 by mileage, CR-V by mileage, Escape by mileage and the most expensive check-engine codes. And our story explains why I built PulsCar. See also the Forester guide by mileage.

Methodology. Price ranges are US independent-shop estimates compiled from published repair-cost sources and vary by region, engine and parts choice; dealer pricing typically runs 30-50% higher. They are marked ⚪ throughout and are estimates rather than measurements from a dataset we own. Claims marked 🟢 rest on the settlement documents and case records listed above, each identified so you can verify it independently. Coverage windows run from the original in-service or warranty start date; the oil-consumption settlement has expired, Subaru's ten-year CVT extension is ending car by car, the windshield extension is open, and eligibility is always VIN-specific. An earlier version of this guide attributed the Ascent MPT clutch settlement to 2019-2020 Outbacks; that has been corrected.

Prices verified: August 2026 · Technical documents verified: September 2026 · Reviewed quarterly

Had a documented consumption test, or a CVT repair covered under the settlement? Email [email protected] with the year, in-service date and odometer reading — owner data is how these ranges get sharper.