2014 — 2019
2.2L (OM651) Turbo Diesel - V220 d
Diesel
Listen for transmission shudder | Description: While driving at low speeds, pay attention to the 7G-TRONIC gearbox. It is common for these to exhibit minor hesitation or shudder if the transmission fluid service intervals have been stretched.
Check the air suspension leveling | Description: Check this by parking on flat ground and observing if the vehicle sits level. If one corner appears lower, it could suggest that the air bellows are reaching the end of their design life.
Monitor the coolant temperature | Description: Watch the dash gauge during your drive; if the engine struggles to reach or hold operating temperature, it is often a sign that the thermostat has failed in the open position.
Operate all sliding doors multiple times | Description: Test this by opening and closing the electric sliding doors several times. Smooth operation is key, as the motors and sensor rails can occasionally require maintenance or calibration.
Usually marks the interval where secondary cooling system components, like the auxiliary water pump, may begin to show signs of age.
A common point where the DPF (Diesel Particulate Filter) may require a professional forced regeneration or a deeper clean to maintain efficiency.
Typically a time to inspect the turbocharger seals and hoses, as the higher pressures of the OM651 engine can lead to minor oil weepage over long durations.
Ensure you have a full service history that specifically shows transmission fluid changes at the required intervals.
Double-check the AdBlue system health, as these engines rely on the SCR system for emissions compliance.
Inspect the brake rotors and pads thoroughly; being a heavy vehicle, these components tend to wear more quickly than on smaller passenger cars.
Verify the condition of the cabin air filters to ensure the climate control system remains efficient and odor-free.
Look for consistent engine oil change intervals; the OM651 is sensitive to oil quality, so regular servicing is the best way to keep it running smoothly.
Estimated repair costs if issues arise
If you notice the vehicle sinking overnight or the compressor running excessively, you might eventually need to budget for replacing the rubber air bags or the compressor unit itself.
If the gear shifts start feeling firmer than usual, a transmission service or valve body repair is a sensible future budget planning item to maintain driving comfort.
Depending on the car's driving history—especially if it does mostly short city trips—you might eventually need to budget for professional cleaning or sensor replacement to keep the emissions system clear.
Noticed something inaccurate or missing?Suggest an edit→
Disclaimer: This report is generated with the assistance of AI analysis based on verified automotive data. While we strive for 100% accuracy, enthusiasts should always conduct physical inspections and consult service records. View Full Disclaimer