Is the 2015 Hyundai Sonata a bad year?
1,156 owner complaints to NHTSA. Engine complaints: 650, 26× a quiet Sonata year.
Consider selling
Half of all engine complaints about the 2015 Hyundai Sonata were filed between 32k and 100k miles. You're at 68,000 miles.
The verdict moves with mileage: the same car reads differently at 30,000 and at 150,000 miles.
What 2015 Sonata owners report, by mileage
Each system owners named in five or more complaints, with the mileage range where the middle half of those complaints were filed. Read at 68,000 miles.
| SYSTEM | COMPLAINTS | MIDDLE HALF FILED AT | TYPICAL US REPAIR BILLS |
|---|---|---|---|
| EngineSTANDS OUT | 649 (56%) | 32k–100k miles · around this mileage | Valve cover gasket replacement $110–$500 · Timing chain replacement $1,000–$4,000 |
| Fuel systemSTANDS OUT | 87 (8%) | 13k–76k miles · around this mileage | Fuel pump replacement $220–$1,500 · Fuel injector replacement (one injector) $300–$1,200 |
| Speed controlSTANDS OUT | 61 (5%) | 24k–80k miles · around this mileage | — |
| Electrical system | 168 (15%) | 21k–84k miles · around this mileage | 12-volt battery replacement $100–$400 · Starter motor replacement $350–$1,200 |
| Transmission and drivetrain | 135 (12%) | 25k–76k miles · around this mileage | CV axle / CV joint replacement (one side) $300–$1,500 · Automatic transmission replacement $2,500–$7,000 |
| Steering | 74 (6%) | 28k–100k miles · around this mileage | Steering rack and pinion replacement $700–$2,100 |
| Body structure | 52 (4%) | 16k–75k miles · around this mileage | — |
| Exterior lighting | 38 (3%) | 37k–80k miles · around this mileage | — |
| Visibility and wipers | 30 (3%) | 30k–73k miles · around this mileage | — |
| Air bags | 25 (2%) | 29k–91k miles · around this mileage | — |
| Seat belts | 21 (2%) | 14k–76k miles · around this mileage | — |
| Stability control | 12 (1%) | 35k–80k miles · around this mileage | — |
| Brakes | 77 (7%) | 15k–64k miles · mostly behind | — |
| Suspension | 17 (1%) | too few with a mileage | — |
Bills are typical US ranges from the sources named in the tool (J.D. Power, Kelley Blue Book, CarParts.com and others), printed only for systems that stand out or sit at or ahead of 68,000 miles. Not a quote.
What owners reported alongside their complaints
Of 1,156 complaints: 34 mention a crash · 48 mention a fire · 24 report an injury · 91 say the car was towed.
102 complaints were filed in the last 12 months, the newest in Nov 2026.
Counts of what owners wrote in their complaints, not verified by anyone.
In owners' own words
I thought I heard knocking in the engine a few days ago. I checked seem to be no problems. Then yesterday march 27 it stopped on my in traffic.
Car began shaking and engine shut off. This happened right after powering engine on after fueling up. Pressed gas to accelerate to leave gas area and car shook and turned off.
Me and my wife were driving to southern california on a road trip. When accelerating uphill, the transmission downshifted to above 3,500 rpm's.
Unedited excerpts from complaints filed with NHTSA, chosen by mileage (nearest 68,000 miles), not by content. Unverified.
Recalls for the 2015 Hyundai Sonata: 9
The Smart Junction Box (SJB) software logic may not properly interpret the signals received from the multifunction switch, which could cause the turn signal to activate in the opposite direction of what the driver intended. A turn signal that activates in the opposite direction of what was intended by the driver increases the risk of a crash.
In the affected vehicles, the warning light to indicate that the parking brake is applied may intermittently not illuminate in the dash due to corrosion in the switch. If the parking brake indicator is not illuminated when the parking brake is applied, the driver may operate the vehicle with the parking brake partially engaged, increasing the risk of a crash.
Due to a bonding issue with the sunroof wind deflector, the sunroof panel on the affected vehicles may detach while driving. If the sunroof detaches from the vehicle it could become a road hazard, increasing the risk of a crash.
In these vehicles, the driver's frontal air bag may be missing a chemical enhancer required for the second stage air bag deployment, resulting in the second stage not deploying in certain crashes. The primary stage will deploy as intended. An air bag that does not inflate increases the risk of injury.
The affected vehicles are equipped with an Antilock Braking System (ABS) warning light intended to warn the driver if there is an ABS malfunction. In the event of an ABS malfunction, the Brake System warning light will illuminate, but the ABS warning light will not illuminate. If the driver is alerted there is a brake system malfunction, but not specifically with the ABS system, the driver may operate the vehicle unaware that the vehicle's brakes may lock up during hard braking, increasing the risk of a crash.
The affected vehicles have a front passenger seat belt whose buckle latch assembly may prevent the front passenger from fastening the seat belt. If the front passenger seat belt cannot be latched, an occupant sitting in the front passenger seat has an increased risk of injury in the event of a crash.
The affected vehicles may have been assembled with an incorrect left axle shaft which may result in the shaft separating from the transaxle differential. If the left axle shaft separates from the transaxle, the vehicle may stop moving, increasing the risk of a crash.
Due to a manufacturing error, one or both of the front brake calipers may fracture. If a brake caliper fractures, brake effectiveness would be reduced, lengthening to distance required to stop the vehicle, increasing the risk of a crash.
A poor connection within the vehicle's wiring harness may result in a reduction of steering assist from the vehicle's motor driven power steering system or the inability to move the vehicle's shifter from the Park position. The reduction of power steering assist can increase the steering effort needed, increasing the risk of a crash.
A recall may cover only some cars of a model year; the campaign size counts every model and year it lists. Enter your VIN at nhtsa.gov/recalls: dealers fix open recalls free.
Service bulletins from Hyundai: 222
Repair instructions Hyundai sent its dealers for symptoms seen in the shop on the 2015 Hyundai Sonata. Ask a dealer or mechanic for a bulletin by its number.
Following completion of Service Campaign 9C2 (Theta II Emissions Improvement), certain vehicles may exhibit a brief hesitation or rough shifting condition…
Diagnose and replace, if necessary, an automatic transmission with Incorrect Ratio DTC (transmission clutch slip in gear above limit) listed on Page 2
Some vehicles may intermittently exhibit reduced engine power, a "Crank/No Start" condition…
Some vehicles may exhibit abnormal vibration at low speeds
NHTSA defect investigations: 4
Loss of Motive Power
Engine Fires
Throttle control system vulnerabilities
Electrical overstress
Neighbouring years
2014 Sonata: 749 complaints, consider selling · 2016 Sonata: 730 complaints, consider selling.
Every Hyundai Sonata year
2000 · 2001 · 2002 · 2003 · 2004 · 2005 · 2006 · 2007 · 2008 · 2009 · 2010 · 2011 · 2012 · 2013 · 2014 · 2015 · 2016 · 2017 · 2018 · 2019 · 2020 · 2021 · 2022 · 2023 · 2024 · 2025 · 2026 · All Sonata years side by side
Other Hyundai models: Hyundai Accent · Hyundai Azera · Hyundai Elantra · Hyundai Elantra Touring · Hyundai Entourage · Hyundai Genesis · Hyundai Genesis Coupe · Hyundai Ioniq 5 · Hyundai Kona · Hyundai Kona Electric · Hyundai Palisade · Hyundai Santa Cruz · Hyundai Santa Fe · Hyundai Santa Fe Hybrid · Hyundai Santa Fe Sport · Hyundai Sonata Hybrid · Hyundai Tiburon · Hyundai Tucson · Hyundai Tucson Hybrid · Hyundai Veloster · Hyundai Veracruz · Hyundai XG350. All makes and models.
Questions
Is the 2015 Hyundai Sonata a bad year?
1,156 owner complaints to NHTSA. Engine complaints: 650, 26× a quiet Sonata year. At 68,000 miles the tool says: Consider selling. Half of all engine complaints about the 2015 Hyundai Sonata were filed between 32k and 100k miles. You're at 68,000 miles.
What are the most common problems with the 2015 Hyundai Sonata?
By owner complaints to NHTSA: engine (649), fuel system (87), speed control (61), electrical system (168), transmission and drivetrain (135). Half of the engine complaints were filed between 32k–100k miles.
How many recalls does the 2015 Hyundai Sonata have?
9 recall campaigns list this model year: Exterior lighting (NHTSA 21V-749), Parking brake (NHTSA 17V-359), Visibility and wipers (NHTSA 16V-726), Air bags (NHTSA 16V-232) and more. A recall may cover only some cars; check by VIN at nhtsa.gov/recalls.
Method: counts of unverified owner complaints filed with NHTSA, compared only with other years of the same model (sales volumes are unknown, so no failure rate is computed). A system stands out at 40+ complaints and at least twice the model's quiet (lower-quartile) year, or twice the share across every vehicle of that model year. The mileage range is the 25th to 75th percentile of the mileages owners reported. Data received by NHTSA through November 5, 2026. Repair prices are typical US ranges from named sources, not quotes. Not a diagnosis and not financial advice. PulsCar is not affiliated with NHTSA. Check this car at your own mileage.