2007 Mercedes-Benz R350 Engine Problems
- Complaints
- 6about this part
- Share
- 13%of 47 total for the year
- Median mileage
- 35,500miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 6 complaints about the engine of the 2007 Mercedes-Benz R350, 13% of the 47 complaints for this model year. Where a mileage was given, the median is 35,500 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.
“Mercedes R350 4matic year 2007, current 80000 miles. 1/ first issue around 20000 miles, AC is not working when used for long hours of driving. Need to stop the vehicle and turn off eng and restart eng then turn AC back on to make it work again. Happend till now 80000 miles. Noise come from all 4 doors due to the gap seal of the all door vibration while driving. 2/ around 40000 miles, power sw window on driver side come off at all 4 buttons just like a pcs knock off of toy. 3/ auto power trunk is not working, belt tenssion pulley broke at 50000 miles. …”
NHTSA complaint #10735657, filed 2015-07, 20,000 miles“The contact owns a 2007 Mercedes-Benz R350. The contact stated that the check engine light illuminated. The vehicle was then taken to the dealer where the dealer stated that the engine was operating at half power and that the down shaft needed to be replaced. The vehicle was repaired. The failure and current mileages were 51,000. Updated 4/24/13 updated 05/21/2013”
NHTSA complaint #10501824, filed 2013-03, 51,000 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
- 11031629Oct 30, 2015To enhance the satisfaction of our customers, avoid further costs of litigation and return focus to its core businesses, Mercedes-Benz USA, LLC (MBUSA) entered into a settlement…
Engine: other model years
Other parts of the 2007 Mercedes-Benz R350
16 complaintsSeats
10 complaintsBrakes
6 complaintsTransmission and drivetrain
5 complaintsElectrical system
4 complaintsEngine cooling
4 complaintsAir bags
3 complaintsEquipment
2 complaintsExterior lighting
2 complaintsSteering
2 complaintsVisibility (wipers, defrost, mirrors)
2 complaintsBack-over prevention (rear camera)
1 complaints
← All problems reported for the 2007 Mercedes-Benz R350
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 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