2011 Mercedes-Benz ML350 Fuel system Problems
- Complaints
- 2about this part
- Share
- 2%of 111 total for the year
- Median mileage
- 97,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 2 complaints about the fuel system of the 2011 Mercedes-Benz ML350, 2% of the 111 complaints for this model year. Where a mileage was given, the median is 97,000 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“Def/adblue heater failure. It appears it is common for the def/adblue heater to fail. I have been told by mercedes service that they redesigned the heater because of the common failure of this part but they are not replacing them as a recall. (same problem with vw which in now covered)”
NHTSA complaint #10928903, filed 2016-11, 80,000 miles“The contact owns a 2011 Mercedes-Benz ML350. The contact stated while driving 45 MPH, the contact noticed that the check engine warning light was illuminated. The contact stated that the message indicating an EVAP leak was displayed. The contact checked and noticed that there was a leak underneath the vehicle coming from the fuel tank. The vehicle was not diagnosed. The manufacturer was not contacted. The failure mileage was 114,000.”
NHTSA complaint #11509505, filed 2023-02, 114,000 milesRelated service bulletins
- 10167487Mar 21, 2014Minor leaks at the oil duct of the left or right cylinder head of engines 157, 276 and 278. 1. Left cylinder head: Oil passage plug hole on left beside mechanical vacuum pump. 2…
- 10167553Jul 1, 2013Combination message: "Clean fuel filter" is displayed. The fault code 162500 (water level message - Bosch) or P226997 (water level message - Delphi) or 171600 (filter load…
Fuel system: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2015 | 8 | 15% |
| 2014 | 12 | 18% |
| 2013 | 9 | 16% |
| 2012 | 16 | 25% |
| 2011 | 2 | 2% |
| 2010 | 1 | 1% |
| 2009 | 5 | 5% |
| 2008 | 2 | 3% |
| 2007 | 2 | 2% |
| 2006 | 5 | 3% |
| 2005 | 1 | 4% |
| 2004 | 4 | 11% |
Other parts of the 2011 Mercedes-Benz ML350
59 complaintsBrakes
19 complaintsElectrical system
16 complaintsEngine
7 complaintsTransmission and drivetrain
7 complaintsOther or unknown
4 complaintsExterior lighting
3 complaintsSeats
3 complaintsVehicle speed control
3 complaintsBody and structure
2 complaintsElectronic stability control
1 complaintsSeat belts
1 complaints
← All problems reported for the 2011 Mercedes-Benz ML350
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Nov 1, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology