2012 Mercedes-Benz ML350 fuel/propulsion system problems
12 owner complaints filed with NHTSA name the fuel/propulsion system on the 2012 Mercedes-Benz ML350 — 18% of all complaints for this model year.
What owners report
“Engine stalled driving on interstate highway at 70mph. Mechanic diagnostic indicated to be faulty fuel pump and/or fuel pump control unit. This issue has been recognized by mercedes benz as a faulty issue and subject to recall. Upon calling mercedes benz dealer was told there was no recall on this…”
filed Apr 14, 2026
“Vehicle stalled without warning, and I was advised by a mechanic that the fuel pump control unit was reporting a fault through the onboard diagnostics port and the check engine light on the dashboard. It was necessary to replace the fuel pump control unit as the defect was intermittent and subject…”
filed Jan 6, 2025
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Fuel/propulsion System problems in other ML350 years
| Year | Reports | Share |
|---|---|---|
| 2015 ML350 | 4 | 8% |
| 2014 ML350 | 7 | 10% |
| 2013 ML350 | 7 | 13% |
| 2011 ML350 | 1 | 1% |
| 2010 ML350 | 1 | 1% |
| 2009 ML350 | 4 | 4% |
| 2008 ML350 | 2 | 3% |
| 2007 ML350 | 2 | 2% |
| 2006 ML350 | 3 | 2% |
| 2005 ML350 | 1 | 4% |
| 2004 ML350 | 2 | 6% |
Other reported problem areas on the 2012 Mercedes-Benz ML350
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.