| 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 engine repair cost distribution
$2500+ (0%)
$1000 - $2499 (16%)
$500 - $999 (5%)
$100 - $499 (11%)
< $100 (68%)
Chart based on 19 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
| 60760 mi C $1400 |
NOx censors replacement |
2012 Mercedes-Benz M-Class 4dr SUV
turbocharged 240hp 3.0L V6 Diesel 7-speed shiftable automatic AWD
| 68000 mi | Turbo seal replaced. Then oil cooler oil leak discovered. Out of warranty but paid $0 (goodwill). |
| 70000 mi US $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. |
| 60000 mi | Shorted harness resulted in destruction of computer and messed up Adblue system |
| 52100 mi | Oil leak |
| 114850 mi US $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. |
| 26040 mi | Part of the emission system had to be replace |
| 38500 mi | Seeping Oil pan gasket was replaced under warranty before it developed into significant problem. |
| 66000 mi | 02 sensor in exhaust. |
| 100000 mi | Diesel exhaust system replacement under Mercedes Benz legal settlement |
| 110000 mi | Seals to intake, oil cooler replaced. |
2012 Mercedes-Benz M-Class 4dr SUV
302-horsepower 3.5L V6 7-speed shiftable automatic AWD w/low range
| 50800 mi C $800 |
Main fuel pump replacement |
2012 Mercedes-Benz M-Class 4dr SUV
302-horsepower 3.5L V6 7-speed shiftable automatic AWD
| 236000 mi US $1500 |
replace right side catalytic converter due to persistent check engine light |
| 37000 mi | Car sometimes turns on and then shuts off right after pushing the start button. There was a software update to fix. |
| 5000 mi | Rough idle, occasional stall on cold start. |
| 6000 mi | Fuses igniting cylinders blown twice. Replaced ignition coils. Fixed after second attempt. |
| 60000 mi US $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. |
| 29000 mi | Smart Key failed to start car. Smart Key replaced by dealer under warranty. |
| 10500 mi | Low coolant Warning Came on. Added half an inch of coolant to the reservoir, said common. |
See TrueDelta's information for all SUVs
See TrueDelta's information for all Mercedes-Benz models.
