2008 Mercedes-Benz ML320 Engine Problems
- Complaints
- 2about this part
- Share
- 10%of 21 total for the year
- Median mileage
- 87,890miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 2 complaints about the engine of the 2008 Mercedes-Benz ML320, 10% of the 21 complaints for this model year. Where a mileage was given, the median is 87,890 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.
“A seal for the engine oil cooler failed. The cooler leaked oil onto the under-engine pan and was not detected as a leak on the garage floor. Had the cooler failed completely it would have created a safety issue in traffic. The seal failure appears to be a common problem but should not occur under normal use, which is how this vehicle is used.”
NHTSA complaint #10683293, filed 2015-02, 125,781 milesRelated service bulletins
- 11017039Apr 1, 2025Complaint Vehicle with atypical reduced heat output. Cause Silicate granulate may have escaped from a damaged bag in the expansion reservoir (not visible), reducing the coolant…
- 10158329Oct 9, 2017Oil in engine wiring harness
- 10135598Mar 25, 2015Engine diagnosis warning lamp lights up in instrument cluster, fault code U145400: "Implausible data were received from the ethanol sensor"
Engine: other model years
Other parts of the 2008 Mercedes-Benz ML320
6 complaintsElectrical system
4 complaintsSteering
3 complaintsEngine cooling
2 complaintsOther or unknown
2 complaintsSeat belts
2 complaintsVehicle speed control
2 complaintsAir bags
1 complaintsBrakes
1 complaintsBody and structure
1 complaintsSuspension
1 complaintsTransmission and drivetrain
1 complaints
← All problems reported for the 2008 Mercedes-Benz ML320
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 30, 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