AI DamageMercedes-Benz R350: problems, complaints, bulletins
Summary for the Mercedes-Benz R350 across 7 model years: 235 owner complaints and 0 NHTSA service bulletins, plus repair videos. Pick a year for details.
Model years
What fails most often
- 1 Suspension 23% of all complaints
- 2 Air bags 17% of all complaints
- 3 Engine 14% of all complaints
- 4 Electrical system 11% of all complaints
- 5 Engine and cooling 9% of all complaints
- 6 Service brakes 9% of all complaints
- 7 Powertrain 9% of all complaints
- 8 Seats 9% of all complaints
- Suspension: 55 complaints (23% of all).
- Air bags: 40 complaints (17% of all), 1 of them with a crash reported by the owner.
- Engine: 32 complaints (14% of all).
- Electrical system: 27 complaints (11% of all), 1 of them with a crash reported by the owner.
- Engine and cooling: 21 complaints (9% of all).
Symptoms owners describe
How many of the 235 NHTSA complaints mention each symptom (automatic count from complaint text; one complaint can mention several).
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Suspension | 55 | 0 | 0 |
| Air bags | 40 | 1 | 0 |
| Engine | 32 | 0 | 0 |
| Electrical system | 27 | 1 | 0 |
| Engine and cooling | 21 | 0 | 0 |
| Service brakes | 21 | 1 | 0 |
| Powertrain | 20 | 2 | 0 |
| Seats | 20 | 0 | 0 |
| Steering | 17 | 0 | 0 |
| Exterior lighting | 12 | 0 | 0 |
| Visibility | 5 | 0 | 0 |
| Electronic stability control | 4 | 0 | 0 |
| Fuel system | 4 | 0 | 0 |
| Structure | 4 | 0 | 0 |
What owners report
Short excerpts of NHTSA complaints in the original wording. These are owner statements not verified by NHTSA; personal data removed.
Pressed down on braked and nothing happened. Pressed down on emergency break to aid in stopping. No warning lights or sounds
I pulled into my driveway and under the covered portico and placed my car in "park" with the engine running and the driver's side door open.I got out of the car and went to check something at my front door which was forward and to the left of the parked car before proceeding to open the gate across our driveway.the…
The brake fluid lines are corroding much faster than in other models, and without actual corrosion under the car. It happened to my car, and I have been reading forums of MB owners of this same R model, as well as C, E, GLK, and ML models all reporting the same issues.
Error codes P0016 and P0017 camshaft out of alignment and vehicle will not pass smog test, also loss of power of the engine.
The contact received notification of NHTSA Campaign Number: 22V315000 (Service Brakes, Hydraulic) however, the part to do the repair was unavailable. The contact stated that the manufacturer exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue.
I called the Dealership to schedule the appointment. They told me they have no appointment available for next 3 weeks and even I wait for that long they will not be able to provide me a loaner car. The total job time is 4-6hrs I am not willing to wait that long.
When owners complained
NHTSA complaints by filing year. The peak shows at what age the problems show up most.
What to check before buying
- Suspension. Wheel alignment, control arms, subframe, even tire wear.
- Air bags. Check the SRS light, stored codes and airbag/curtain status after any impact.
- Engine. Cold start, unusual noises, oil leaks and engine codes.
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
Other models of this make
Read also
Sources: public NHTSA data (USA): service bulletins and owner complaints; YouTube: links to videos credited to their authors. Complaints are owner statements not verified by NHTSA, and describe defects rather than crash damage. Data updated 2026-11-05.