Buyer's guide
Prioritize low-mileage examples with full service records from authorized Mercedes-Benz dealers to ensure proper turbocharged engine maintenance. Verify carbon buildup intervals and transmission fluid changes, as these are critical maintenance items for long-term R190 reliability.
Common issues
| Issue | Severity | Notes |
|---|---|---|
| Direct injection carbon buildup on intake valves | High | Turbocharged engine requires periodic walnut shell blasting or chemical cleaning around 60k-80k miles |
| DCT transmission shift hesitation in cold starts | Medium | Firmware updates available from dealers; ensure transmission fluid meets AMG specifications |
| Roof hydraulic actuator slow response | Low | Lubrication and sensor recalibration resolves most cases |