Carsieve Mercedes-Benz M-Klasse 166 ML 350 BlueTEC, 258 PS, 7-speed automatic, all-wheel drive (2011–2015)
- Power
- 258 PS (190 kW)
- Engine codes
- 642826
- Gearbox
- 7-speed automatic
- Production years
- 2011–2015
- Running cost per month
- €683
- Fuel
- Diesel
- Median price
- €16,790
- Reliability
- 2/5
- DIY
- 1/5
Research for this car
- Generation guide Mercedes M-Class W166 (2011-2015): known problems and buying guide
Average reliability. On the V6 diesel check the AdBlue system, intake flaps and oil cooler seals, and give Airmatic cars a pressure test.
- Gearbox guide Mercedes 7G-Tronic (722.9) 7-speed automatic: problems, costs and what to check
Buy only with fluid records and a clean full-system scan, and avoid any car that has run in limp mode or judders at a steady speed.
Known issues for this car
| Issue | Affects | Typical km | Repair cost | Source |
|---|---|---|---|---|
| AdBlue system faults | OM642 V6 diesel | 100,000-150,000 km | 600-1,700 EUR per sensor (one German press test, 2020) | Generation guide |
| Airmatic air suspension faults | Cars with optional Airmatic | Checks from 80,000-120,000 km; rear springs often 3-4 years | Bellow about 200 EUR; compressor 600-1,200 EUR (one German garage, year not stated) | Generation guide |
| Oil cooler seal leaks | OM642 V6 diesel | From about 120,000 km | Not stated | Generation guide |
| Intake manifold and flap faults | OM642 V6 diesel | About 150,000 km | Not stated | Generation guide |
| Conductor plate and speed sensor failure | All 722.9 cars; early 2004-2007 builds most | 50,000 to 80,000 km | About 850 EUR for the control board (Russia, 2019 press article) | Gearbox guide |
| Torque converter lock-up clutch judder | All 722.9 cars; a Daimler bulletin covers Plus cars built 2011-2012 | 100,000 to 200,000 km | No confirmed price | Gearbox guide |
| Valve body and clutch pack wear | All 722.9 cars | 100,000 to 180,000 km | 1,500 to 1,700 EUR for a complete mechatronic (Russia, 2019 press article) | Gearbox guide |
| Old fluid and missed adaptation reset | All 722.9 cars | 80,000 to 100,000 km | About 600 EUR for a flush with new fluid (Austria, 2022) | Gearbox guide |
Before you buy this car
From the generation guide
- Read the AdBlue fault memory with a scanner. Bad result: codes P20EE, P203F, P207F or P11F0, a yellow AdBlue warning with a full tank, or a dealer who has replaced sensors more than once. Needs a scanner.
- Run the Airmatic pressure test with a scanner: a 30-minute pressure hold. A drop under 0.3 bar is fine. Bad result: a bigger drop, a sag after parking, or a compressor that runs for more than 30 seconds per cycle. Needs a scanner.
- Read the intake flap (EKAS) position with a scanner. Bad result: a deviation above 10 % from target, or a rough idle. The repair means cleaning the intake, and can mean new parts. Needs a scanner.
- Look for oil in the V of the engine and at the gearbox flange, with the engine warm. Bad result: fresh oil on the seals, or a leak that has started.
- Ask a Mercedes dealer to check the VIN for open campaigns. Bad result: an open campaign, for example the steering gear bolts or the water ingress at the fuel pump control unit.
From the gearbox guide
- Read the shift pressure data with XENTRY or an equal Mercedes scanner. Bad result: pressure deviations above 0.5 bar, or adaptation values above 30 percent. Those point to valve body wear.
- Read the full gearbox fault memory with a full-system scanner. An engine-only OBD2 reader does not show it. Bad result: speed sensor codes P0717, P0718, P0722 or P0793, or any stored limp mode.
- Test drive cold and warm, and pull away from a stop. Bad result: stuck in 2nd, slipping between 1st and 2nd, or limp mode at about 48 km/h (30 mph).
- Hold a steady light throttle at about 60 km/h. Bad result: a shudder or hum. A scanner shows converter slip; 5 to 25 rpm is normal, and above about 80 rpm points to clutch wear.
- Ask for the fluid invoices and check the fluid. Bad result: no change after about 80,000 km, dark brown or black fluid, a burnt smell, or a fluid other than the one for the build. A wrong fluid can cause code P0741. Red-amber is the correct colour.
- Ask a dealer whether bulletin LI27.20-P-055758 applies to the car's VIN, and whether it was done. Bad result: lock-up codes FC 2783 or FC 0741 still stored.
Running costs
| Operational | €224 |
|---|---|
| Workshop | €223 |
| Fixed costs (tax, insurance) | €236 |
| Total per month | €683 |
| New-car depreciation (not included) | €130 |
ADAC figures for 15,000 km a year over 60 months
Market
Listings on mobile.de in this generation with this fuel, gearbox and power.
- Listings
- 498
- 25th percentile
- €13,900
- Median price
- €16,790
- 75th percentile
- €19,850
- Median mileage
- 220,500 km
- Median first registration
- 2013
- Dealer share
- 45.8%
Check a listing
Prices by first registration
| First registration | Listings | Median price | Median mileage |
|---|---|---|---|
| 2016 | 1 | – | – |
| 2015 | 57 | €18,500 | 211,431 km |
| 2014 | 106 | €17,500 | 206,600 km |
| 2013 | 149 | €16,990 | 220,200 km |
| 2012 | 158 | €15,490 | 225,000 km |
| 2011 | 27 | €11,990 | 259,000 km |
Medians only for years with at least 5 listings. Many cars are first registered after production ends, so years can run past the build years.
Price history
| Month | Listings | Median price | Middle half | Median mileage |
|---|---|---|---|---|
| Nov 2026 | 498 | €16,790 | €13,900 – €19,850 | 220,500 km |
| Oct 2026 | 498 | €16,790 | €13,900 – €19,850 | 220,500 km |
Median asking price at the last snapshot of each month.
ADAC versions
All 2 ADAC versions
| Version | Power | Production years | Running cost per month |
|---|---|---|---|
| ML 350 BlueTEC 4MATIC 7G-TRONIC PLUS | 258 PS | 2011–2015 | €679 |
| ML 350 BlueTEC Edition 1 4MATIC 7G-TRONIC PLUS | 258 PS | 2011–2012 | €689 |