| 1 | 0 | 3 | 4 | 3 | 4 |
2012 Mercedes-Benz M-Class repairs by problem area
Engine (30%)
Transmission and Drivetrain (6%)
Brakes and Traction Control (1%)
Suspension and Steering (12%)
Electrical and Air Conditioning (23%)
Paint, Rust, Leaks, Rattles, and Trim (20%)
Other (7%)
Chart based on 69 repairs.
2012 Mercedes-Benz M-Class repair cost distribution
$2500+ (0%)
$1000 - $2499 (14%)
$500 - $999 (12%)
$100 - $499 (16%)
< $100 (57%)
Chart based on 49 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.
2012 Mercedes-Benz M-Class 4dr SUV
turbocharged 255hp 3.0L V6 Diesel 7-speed shiftable automatic AWD
| Mercedes-Benz M-Class in Ontario, Canada Feb 2017 - Mar 2017 | |||
| Feb 201760760 miC $1400 | NOx censors replacement | ||
2012 Mercedes-Benz M-Class 4dr SUV
turbocharged 240hp 3.0L V6 Diesel 7-speed shiftable automatic AWD
| Mercedes-Benz M-Class in Quebec, Canada Feb 2013 - Mar 2014 | |||
| Mar 201426040 mi | The 2 lighted M-B sign on passenger and driver floor Part of the emission system had to be replace | ||
| Mercedes-Benz M-Class in Texas, United States Jan 2013 - Apr 2013 | |||
| Apr 201317000 mi | Interior door panel creaks, apparently there was a TSB to add felt tape behind the panels (b pillars) which fixed the issue. | ||
| Mercedes-Benz M-Class in New York, United States Oct 2014 - Jun 2018 | |||
| Feb 201652100 mi | Oil leak | ||
| Mercedes-Benz M-Class in Pennsylvania, United States Oct 2013 - Oct 2015 | |||
| Nov 201433700 mi | Blown gasket; plus a second transmission oil leak | ||
| Mercedes-Benz M-Class in Virginia, United States Jun 2015 - Jul 2015 | |||
| Jul 201560000 mi | Shorted harness resulted in destruction of computer and messed up Adblue system | ||
| Mercedes-Benz M-Class in Ohio, United States Aug 2015 - Aug 2016 | |||
| Dec 201568000 mi | Turbo seal replaced. Then oil cooler oil leak discovered. Out of warranty but paid $0 (goodwill). | ||
| May 201669300 miUS $1500 | air suspension failed. Dealer had car in twice to complete repair. | ||
| Aug 201670000 miUS $1800 | Oil leak at turbo repaired, leak continued. Ultimately determined the problem was with the intercooler. All told dealer had Mercedes for 3 months on and off. Dealer did complete the repair and covered it under warranty even though I was out of warranty. | ||
| Mercedes-Benz M-Class in Washington, United States Mar 2012 - Dec 2014 | |||
| Jan 201313600 mi | Total COMMAND system failure. Service technician indicated replacement component would have cost approx $5000 if out of warranty. | ||
| Feb 201317400 mi | Tailgate actuator failed | ||
| Mercedes-Benz M-Class in Ohio, United States Nov 2017 - Jun 2022 | |||
| Jun 201856000 miUS $170 | Power rear door drive made horrible noises and wouldn't engage to lift the door. Purchased replacement part from dealer and replaced it. | ||
| Sep 2021114850 miUS $450 | The dreaded oil cooler seals were leaking. Removed everything from the engine above the block to replace the oil cooler seals. Many consumables replaced on other systems. Also cleaned out a large amount of built up oil soot from the air intake system downstream of the throttle body. | ||
| Mercedes-Benz M-Class in Washington, United States Nov 2011 - Jun 2022 | |||
| May 20127500 mi | Clamp holding boot came loose and leaked grease on nearby parts. Clamp re-installed and repaired as warranty item. No apparent damage to C-V joint assembly from loss of grease. | ||
| Jul 201438000 mi | Window seal noise repaired on driver/passenger front doors. | ||
| Aug 201438500 mi | Seeping Oil pan gasket was replaced under warranty before it developed into significant problem. | ||
| May 201655000 miUS $350 | Replaced rear pads due to wear at customer expense. First change since new. Replaced computer/circuit board for "pre-safe" seatbelt tightening/collision avoidance under warranty (extended). | ||
| Feb 201763000 mi | DEF heater in DEF tank failed and was replaced. | ||
| Jun 201766000 mi | Window replacement through insurance. Rock chip. | ||
| Jun 201866000 mi | 02 sensor in exhaust. | ||
| Apr 2021100000 mi | Diesel exhaust system replacement under Mercedes Benz legal settlement | ||
| May 2022110000 mi | Seals to intake, oil cooler replaced. | ||
| Mercedes-Benz M-Class in Washington, United States Sep 2016 - Jun 2022 | |||
| Oct 201799000 miUS $400 | Battery replacement in addition to a standard B3 service | ||
| May 2022103000 miUS $850 | Massive water leak that filled up the spare tire space and throughout the chassis (couple of gallons of water from behind each wheel well and boot of suv). Water shorted out the fuel pump control module and the battery required replacing. Not clear where the water leak originated. No evidence inside the vehicle. Drain vents were cleaned and drain plug in rear was removed to ensure flooding would not happen again. | ||
2012 Mercedes-Benz M-Class 4dr SUV
302-horsepower 3.5L V6 7-speed shiftable automatic AWD w/low range
| Mercedes-Benz M-Class in Alberta, Canada Dec 2015 - Jun 2017 | |||
| Feb 201648100 mi | Leak through top of windshield. | ||
| Jan 201747900 miC $800 | Main fuel pump replacement | ||
2012 Mercedes-Benz M-Class 4dr SUV
302-horsepower 3.5L V6 7-speed shiftable automatic AWD
| Mercedes-Benz M-Class in North Carolina, United States Aug 2014 - Jun 2018 | |||
| Sep 201537000 mi | Creaking noise from front strut. Car sometimes turns on and then shuts off right after pushing the start button. There was a software update to fix. | ||
| Feb 201639600 miUS $450 | Transmission and locks were acting up. A new battery solved the issues. | ||
| Mar 201860000 miUS $1200 | Cable was severed leading to a fuel pressure sensor. First replaced sensor and then found damaged wire. Heat shield under car was responsible. | ||
| Mercedes-Benz M-Class in Virginia, United States Dec 2015 - Jun 2022 | |||
| Dec 201749000 miUS $890 | Replaced rear brake pads and rotors Driver’s shoulder harness adjustment was not moving out of the lowest position and was successfully repaired by dealer under warranty | ||
| Mercedes-Benz M-Class in Illinois, United States Dec 2012 - Dec 2015 | |||
| Apr 20146000 mi | Fuses igniting cylinders blown twice. Replaced ignition coils. Fixed after second attempt. | ||
| Mercedes-Benz M-Class in California, United States Oct 2011 - Dec 2014 | |||
| Mar 201315000 mi | Creaking noise when turning. Wheel bearings repaired on right front. | ||
| Jan 201422000 mi | Cv Joint repair for the 2nd time | ||
| Mercedes-Benz M-Class in Florida, United States Oct 2011 - Jun 2017 | |||
| Jan 201313000 mi | Replaced washer pump motor | ||
| Sep 201317000 mi | Had no turn indicators and no blind spot assist. They replaced the steering wheel module. | ||
| Sep 201424000 mi | Replaced drivers seat cover. P-Tex was delaminating. | ||
| Jun 201528000 mi | A/C had a bad smell when started. They needed to install drain plugs so water does not accumulate in the vents. | ||
| Mercedes-Benz M-Class in New York, United States Oct 2011 - Apr 2013 | |||
| Oct 201210500 mi | Low coolant Warning Came on. Added half an inch of coolant to the reservoir, said common. Seat insert on back of front seat has to be replaced. Ordered. | ||
| Apr 201315000 mi | Seat material still on order. Pigment loss. Power tailgate would not go up intermittently and get stuck. | ||
| Mercedes-Benz M-Class in Texas, United States Jan 2012 - Jun 2022 | |||
| Sep 201573000 miUS $604 | replace drive shaft rear flex disc - parts $206.25, labor $256.37 Anti-microbial treatment to A/C evaporator due to persistent bad smell - $140.95 - this smell issue seems to affect many MLs, and our service advisor told us MB will try to fix it under warranty only during the first year of ownership. | ||
| Apr 201686200 miUS $325 | replaced suspension links to cure clunking noise replace hub and bearing | ||
| Nov 2016104600 miUS $325 | Replaced worn cover on drivers bottom seat. Purchased OEM cover on line, had local trim shop install it. | ||
| Nov 2017133000 miUS $700 | Lock on rear tail gate failed, lock replaced, which require disassembly of entire tail gate $600.00 Another attempt to remove bad smell from A/C, still not completely successful $90.00 Another attempt to remove bad smell from A/C, still not completely successful $90.00 | ||
| Apr 2018143000 miUS $930 | Passenger seat cover worn, MB only sells cover as part of complete lower seat assembly due to airbag weight sensors imbedded in seat so repair was much more expensive than expected. Bought OEM seat assembly on internet from a MB dealer for $830 (local MB dealer wanted MSRP of $1200 for the part only!), had trim shop install for $95. Car computer had to be reset by MB dealer ($260). | ||
| Jul 2018149000 miUS $1200 | Replace rear struts due to rough ride with occasional bottoming, also did 4 wheel alignment at same time | ||
| Jan 2022233000 miUS $1875 | The original alternator failed after 233,000 miles. Replaced alternator | ||
| Mar 2022236000 miUS $1500 | replace right side catalytic converter due to persistent check engine light | ||
| Mercedes-Benz M-Class in New Jersey, United States May 2012 - Jun 2015 | |||
| Dec 20125000 mi | Rough idle, occasional stall on cold start. | ||
| Mercedes-Benz M-Class in Massachusetts, United States Feb 2014 - May 2018 | |||
| Jul 201428800 mi | Back up camera lens scratched needed to be replaced | ||
| Jan 2015 | Rear vent broken, needed to be replaced. | ||
| Aug 201660000 miUS $400 | replaced spark plugs and engine light came on for an emission leak. shop claimed not related but I believe it was and they caused it by not replacing intake resonator seals. had to pay to replace seals. | ||
| Mercedes-Benz M-Class in North Carolina, United States Nov 2012 - Dec 2014 | |||
| Dec 201326000 mi | Driver seatcover replacement | ||
| Mercedes-Benz M-Class in Connecticut, United States Apr 2014 - Feb 2016 | |||
| Nov 201429000 mi | Smart Key failed to start car. Smart Key replaced by dealer under warranty. | ||
| Jan 201536000 mi | Rattle coming from under passenger seat. Dealer had to disassemble passenger/seat area, and remove a foreign object from the under seat heating ducts. | ||
| Jul 201534000 mi | Power sunroof does not autoclose to the proper position. Computer reprogrammed, which solved the problem for two weeks. After two weeks, original failure reoccurred. Power sunroof does not autoclose to proper position, failure reoccurred after computer reprogramming. Closed detected position not being stored properly in sunroof motor. Sunroof motor and related sensors replaced. | ||
| Feb 201637000 mi | Rear Window switch not working. Dealer replaced switch. | ||
2011.5 Mercedes-Benz M-Class
Engine not specified
| Mercedes-Benz in United Arab Emirates Dec 2011 - Nov 2012 | |||
| Jan 20123240 mi | Cooling system failed. Entire cooling system was replaced under warranty. | ||
| Apr 20122060 mi | Knocking noise from suspension. Bushings abnormally worn. Replaced. | ||
| Nov 20124340 mi | Transmission failed catastrophically. Replaced. Sold the vehicle right after as I got fed up of it. | ||
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See TrueDelta's information for all Mercedes-Benz models.
