AI DamageMercedes-Benz 450SLC: problems, complaints, bulletins
Summary for the Mercedes-Benz 450SLC across 2 model years: 3 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 |
|---|---|---|---|---|
| 1979 | 2 | 1 | 0 | 0 |
| 1977 | 1 | 0 | 0 | 0 |
What fails most often
- 1 Vehicle speed control 67% of all complaints
- 2 Structure 33% of all complaints
- Vehicle speed control: 2 complaints (67% of all), 1 of them with a crash reported by the owner.
- Structure: 1 complaints (33% of all).
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Vehicle speed control | 2 | 1 | 0 |
| Structure | 1 | 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.
While parking her vehicle inside of the parking lot. Without prior warning the vehicle accelerated forward and hit a tree and bank building.
Tl* the contact owns a 1977 mercedes-benz 450slc (na). While the contact was arriving home, he heard an abnormal noise. The contact noticed that the subframe had detached from the vehicle and the front driver side wheel had shifted inward.
When engine was started, it ran at full throttle due to a nylon bushing failure, the nylon bushing was noted to be completely disintegrated.
When owners complained
NHTSA complaints by filing year. The peak shows at what age the problems show up most.
What to check before buying
- Vehicle speed control. Accelerator pedal, cruise control, throttle codes.
- Structure. Rails, pillars, panel gaps, signs of pulling or welding.
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.