Buyer's guide
The C117 is a reliable entry point to the Mercedes range when properly maintained. Focus on service history for the DCT transmission and timing chain.
Common issues
| Issue | Severity | Notes |
|---|---|---|
| DSG/DCT transmission hesitation | High | Common on early cars, software update helps |
| Timing chain stretch | High | Known issue on 2.0T engines, check at purchase |
| Sunroof drainage blockage | Medium | Causes interior water ingress if not cleared |