AI DamageMercedes-Benz CLK430: problems, complaints, bulletins
Summary for the Mercedes-Benz CLK430 across 4 model years: 37 owner complaints and 0 NHTSA service bulletins, plus repair videos. Pick a year for details.
Model years
What fails most often
- 1 Electrical system 32% of all complaints
- 2 Powertrain 24% of all complaints
- 3 Engine and cooling 14% of all complaints
- 4 Structure 11% of all complaints
- 5 Service brakes 8% of all complaints
- 6 Air bags 5% of all complaints
- 7 Electronic stability control 5% of all complaints
- 8 Vehicle speed control 5% of all complaints
- Electrical system: 12 complaints (32% of all).
- Powertrain: 9 complaints (24% of all), 1 of them with a crash reported by the owner.
- Engine and cooling: 5 complaints (14% of all).
- Structure: 4 complaints (11% of all).
- Service brakes: 3 complaints (8% of all).
Symptoms owners describe
How many of the 37 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) |
|---|---|---|---|
| Electrical system | 12 | 0 | 0 |
| Powertrain | 9 | 1 | 0 |
| Engine and cooling | 5 | 0 | 0 |
| Structure | 4 | 0 | 0 |
| Service brakes | 3 | 0 | 0 |
| Air bags | 2 | 0 | 0 |
| Electronic stability control | 2 | 0 | 0 |
| Vehicle speed control | 2 | 0 | 0 |
| Visibility | 2 | 0 | 0 |
| Engine | 1 | 0 | 0 |
| Equipment | 1 | 0 | 0 |
| Fuel system | 1 | 0 | 0 |
| Seats | 1 | 0 | 0 |
| Suspension | 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.
Tl* the contact owns a 2000 mercedes benz clk430. The contact stated that the vehicle was parked and shut off when a child was able to shift the vehicle into neutral or reverse, without the presence of the key in the ignition. The vehicle began to roll backwards down a hill as a result.
For some unknown reasons my windows go down while Driving , Sometimes they may work fine, then out of Know where all all 4 Windows go Down at any Time , came be Very Dangerous in a Rain Storm or Huracane , i have taken my Car to atleasat 2-3 Shops they Pretend to repair it and said they needed a better Scanner.
While driving my windows go down when driving without a notice, this can be safety issue when I'm driving, also can be a distraction far as safety goes, this happens often without notice and allows the rain to enter inside my vehicle.
With the key on and the vehicle turned off, in park, parking brake on, pressed closure button. During closure headrests began to raise. Not a sudden pop up kind of raising, but a slow, steady raising, as if I had my hand on the button to raise them, yet I did not.
The interior of the headlamp assembly was melted and burnt. Upon close examination all of the wiring inside and outside of the headlamp enclosure was deteriorated. The protective plastic covering over the wires were crumbling and had fallen apart, bare wires had been touching inside of the housing.
Opened door and got in car to close and pulling handle the handle broke off. Went to mercedes to order part and they said it was a weak part and have to order from germany.
When owners complained
NHTSA complaints by filing year. The peak shows at what age the problems show up most.
What to check before buying
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
- Powertrain. Shift quality under load, harsh shifts, transmission codes, CV joints.
- Engine and cooling. Radiator and fan after a frontal hit, coolant level and condition, overheating.
- 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.