Is the 2006 Mercedes-Benz ML 350 a bad year?
172 owner complaints to NHTSA. Engine complaints: 52, 5.2× a quiet ML 350 year.
Keep it, but watch the engine
Half of the engine complaints for this year were filed at 58k–100k miles, where you are now.
The verdict moves with mileage: the same car reads differently at 30,000 and at 150,000 miles.
What 2006 ML 350 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 74,000 miles.
| SYSTEM | COMPLAINTS | MIDDLE HALF FILED AT | TYPICAL US REPAIR BILLS |
|---|---|---|---|
| EngineSTANDS OUT | 52 (30%) | 58k–100k miles · around this mileage | Valve cover gasket replacement $110–$500 · Timing chain replacement $1,000–$4,000 |
| Transmission and drivetrainSTANDS OUT | 43 (25%) | 46k–85k miles · around this mileage | CV axle / CV joint replacement (one side) $300–$1,500 · Automatic transmission replacement $2,500–$7,000 |
| Electrical system | 29 (17%) | 51k–99k miles · around this mileage | 12-volt battery replacement $100–$400 · Starter motor replacement $350–$1,200 |
| Steering | 16 (9%) | 60k–110k miles · around this mileage | Steering rack and pinion replacement $700–$2,100 |
| Seats | 14 (8%) | 50k–94k miles · around this mileage | — |
| Brakes | 20 (12%) | too few with a mileage | — |
| Air bags | 9 (5%) | too few with a mileage | — |
| Exterior lighting | 9 (5%) | too few with a mileage | — |
| Speed control | 7 (4%) | too few with a mileage | — |
| Fuel system | 5 (3%) | 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 74,000 miles. Not a quote.
What owners reported alongside their complaints
Of 172 complaints: 10 mention a crash · 19 mention a fire · 10 report an injury · 6 say the car was towed.
1 complaint was filed in the last 12 months, the newest in Aug 2026.
Counts of what owners wrote in their complaints, not verified by anyone.
In owners' own words
2006 mercedes ML350, balancer shaft worn at ~75000 mileage. Balancer shaft gear and/or camshaft chain got totally worn, that will lead to engine lockup at any time if not fixed.
Check engine light came on and when I took my truck in they said it was the balance shaft gear $7500 in md.
While traveling in the center lane on a major parkway at the posted speed limit, our 2006 Mercedes-Benz ML350 experienced a complete engine failure.
Unedited excerpts from complaints filed with NHTSA, chosen by mileage (nearest 74,000 miles), not by content. Unverified.
Recalls for the 2006 Mercedes-Benz ML 350: 2
Moisture may accumulate and cause corrosion in the brake booster housing unit, which can result in reduced brake performance or brake failure. Reduced brake performance or brake failure can increase the risk of a crash.
Moisture may accumulate and cause corrosion in the brake booster housing unit, which can result in reduced brake performance or brake failure. Reduced brake performance or brake failure can increase 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 Mercedes-Benz: 60
Repair instructions Mercedes-Benz sent its dealers for symptoms seen in the shop on the 2006 Mercedes-Benz ML 350. Ask a dealer or mechanic for a bulletin by its number.
Single throttle lift-off clunking noise from the side shaft when moving off (audible at the outboard end)
Xentry: mercedes benz: vehicle stumbles and bucks for a few minutes after a cold start when outside temperature is low (No DTCs)
Xentry (Mercedes): engine warning lamp is currently on or was on and a delay fault of the camshaft adjust to current or stored in the engine control unit
Repeat workshop visit for vehicle vibration while braking from 60MPH
Neighbouring years
2005 ML 350: 23 complaints, keep it · 2007 ML 350: 83 complaints, keep it.
Every Mercedes-Benz ML 350 year
2001 · 2003 · 2004 · 2005 · 2006 · 2007 · 2008 · 2009 · 2010 · 2011 · 2012 · 2013 · 2014 · 2015 · All ML 350 years side by side
Other Mercedes-Benz models: Mercedes-Benz AMG E 55 · Mercedes-Benz C 230 · Mercedes-Benz C 250 · Mercedes-Benz C 300 · Mercedes-Benz C 320 · Mercedes-Benz C 350 · Mercedes-Benz CLA 250 · Mercedes-Benz E 300 · Mercedes-Benz E 320 · Mercedes-Benz E 350 · Mercedes-Benz E 500 · Mercedes-Benz E 550 · Mercedes-Benz GL 450 · Mercedes-Benz GLA 250 · Mercedes-Benz GLC 300 · Mercedes-Benz GLE 350 · Mercedes-Benz GLK 350 · Mercedes-Benz ML 320 · Mercedes-Benz Metris · Mercedes-Benz R 350 · Mercedes-Benz S 430 · Mercedes-Benz S 500 · Mercedes-Benz S 550 · Mercedes-Benz S Class · Mercedes-Benz SL 500 · Mercedes-Benz Sprinter 2500 · Mercedes-Benz Sprinter 3500. All makes and models.
Questions
Is the 2006 Mercedes-Benz ML 350 a bad year?
172 owner complaints to NHTSA. Engine complaints: 52, 5.2× a quiet ML 350 year. At 74,000 miles the tool says: Keep it, but watch the engine. Half of the engine complaints for this year were filed at 58k–100k miles, where you are now.
What are the most common problems with the 2006 Mercedes-Benz ML 350?
By owner complaints to NHTSA: engine (52), transmission and drivetrain (43), electrical system (29), steering (16), seats (14). Half of the engine complaints were filed between 58k–100k miles.
How many recalls does the 2006 Mercedes-Benz ML 350 have?
2 recall campaigns list this model year: Brakes (NHTSA 24V-298), Brakes (NHTSA 22V-315). 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.