AI DamageMercedes-Benz 350: problems, complaints, bulletins
Summary for the Mercedes-Benz 350 across 3 model years: 9 owner complaints and 0 NHTSA service bulletins, plus repair videos. Pick a year for details.
Model years
| Year | Owner complaints | involving a crash | Technical service bulletins (TSB) | YouTube repair videos |
|---|---|---|---|---|
| 1994 | 2 | 1 | 0 | 0 |
| 1991 | 6 | 1 | 0 | 0 |
| 1977 | 1 | 0 | 0 | 0 |
What fails most often
- 1 Air bags 33% of all complaints
- 2 Electrical system 22% of all complaints
- 3 Engine and cooling 22% of all complaints
- 4 Fuel system 11% of all complaints
- 5 Service brakes 11% of all complaints
- 6 Vehicle speed control 11% of all complaints
- Air bags: 3 complaints (33% of all), 1 of them with a crash reported by the owner.
- Electrical system: 2 complaints (22% of all).
- Engine and cooling: 2 complaints (22% of all).
- Fuel system: 1 complaints (11% of all).
- Service brakes: 1 complaints (11% of all).
Engines and transmissions
US-market versions per EPA. On the right: how many NHTSA complaints name this engine or transmission type.
- 3.5 L · diesel · turbo · 6 cyl 1990–1991named in 1 complaints
- automatic, 4-speed 1990–1991
Drive: RWD
Symptoms owners describe
How many of the 9 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) |
|---|---|---|---|
| Air bags | 3 | 1 | 0 |
| Electrical system | 2 | 0 | 0 |
| Engine and cooling | 2 | 0 | 0 |
| Fuel system | 1 | 0 | 0 |
| Service brakes | 1 | 0 | 0 |
| Vehicle speed control | 1 | 1 | 0 |
What owners report
Short excerpts of NHTSA complaints in the original wording. These are owner statements not verified by NHTSA; personal data removed.
Driver's side air bag failed to deploy upon 55 mph collision. Tt
Vehicle was in park in idle position, put gear into drive, vehicle went open throttle position, impact 12:00 position speed unknown. Tt
While driving coolant light came on. Dealership was contacted and checked the coolant level, which was fuel. Dealership indicated that it may be a defect in the system that was causing this to occur. The vehicle is still be serviced for this problem.
It takes as much as 5-10 minutes before the srs light goes out to signal that the system is working. However, with this malfunction there is no way to know if the srs is working at all leaving one to wonder if the system will actually work, if necessary.
When attempting to apply the brakes, the brake pedal went to the floor, resulting in extended stopping distance. The dealer was notified. The valve stuck intermittently.
Defective or wrong 7512 bosch super plugs damaged the vehicle c-head cam.
When owners complained
NHTSA complaints by filing year. The peak shows at what age the problems show up most.
What to check before buying
- Air bags. Check the SRS light, stored codes and airbag/curtain status after any impact.
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
- Engine and cooling. Radiator and fan after a frontal hit, coolant level and condition, overheating.
- Fuel system. Fuel smell, leaks, rough running, fuel-system codes.
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 2026-11-06.