AI DamageMercedes-Benz CLS63: problems, complaints, bulletins
Summary for the Mercedes-Benz CLS63 across 2 model years: 2 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 |
|---|---|---|---|---|
| 2014 | 1 | 0 | 0 | 0 |
| 2012 | 1 | 0 | 0 | 0 |
What fails most often
- 1 Engine 50% of all complaints
- 2 Fuel/propulsion system 50% of all complaints
- 3 Powertrain 50% of all complaints
- Engine: 1 complaints (50% of all).
- Fuel/propulsion system: 1 complaints (50% of all).
- Powertrain: 1 complaints (50% of all).
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Engine | 1 | 0 | 0 |
| Fuel/propulsion system | 1 | 0 | 0 |
| Powertrain | 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.
I have a 2012 Mercedes-Benz CLS63 that is leaking fuel from the rear driver side by the tire. You can smell fuel inside the cabin of the vehicle very strong. On the vin plate on my door it says in my vehicle is built on April 2011 which would qualify it for the recall from Mercedes. Per NHTSA.
furthermore the nhtsa issued a memo stating the coolant leaks into the engine oil compartment as a known issue until production date 12/2013. my cars production date was 10/2013.
When owners complained
NHTSA complaints by filing year. The peak shows at what age the problems show up most.
What to check before buying
- Engine. Cold start, unusual noises, oil leaks and engine codes.
- Fuel/propulsion system. Fuel smell, leaks, rough running, fuel-system codes.
- Powertrain. Shift quality under load, harsh shifts, transmission codes, CV joints.
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.