2012 Mercedes-Benz SLK350 Engine Problems
- Complaints
- 1about this part
- Share
- 8%of 12 total for the year
- Median mileage
- 4,900miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 1 complaints about the engine of the 2012 Mercedes-Benz SLK350, 8% of the 12 complaints for this model year. Where a mileage was given, the median is 4,900 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.
“Transmission wouldn't go into gear. Car lost power on freeway. Many repairs last one being electronic gas pedal. ## VIN passed ## mercedes SLK350 2012 ##”
NHTSA complaint #10494364, filed 2013-01, 4,900 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…
- 10160738Apr 11, 2019Update engine electronics (ME-SFI) control unit software
- 10056233Mar 13, 2014Xentry (mercedes): in the instrument cluster, an esp warning due to implausible accelerator pedal signal received from engine control unit. Model 2012 172, 212, 218, 207, 204.
- 10059576Sep 27, 2013Summary to be provided on a future date.
Engine: other model years
Other parts of the 2012 Mercedes-Benz SLK350
3 complaintsOther or unknown
3 complaintsAir bags
1 complaintsElectrical system
1 complaintsSeats
1 complaintsSteering
1 complaintsBody and structure
1 complaintsSuspension
1 complaintsTransmission and drivetrain
1 complaintsWheels
1 complaints
← All problems reported for the 2012 Mercedes-Benz SLK350
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