2017 — 2020
2.3L OM699 DE23 LA Turbo Diesel (X 220 d) - 120kW 4MATIC
Diesel
Check this by inspecting the rear differential for any signs of weeping oil, as seals on the X-Class can occasionally show fatigue over higher distances.
While driving on a flat road, take note of any vibrations through the steering wheel at highway speeds, as these vehicles can be sensitive to wheel balancing and alignment settings.
Perform this during the test drive by cycling through the 4MATIC settings on a loose surface, ensuring the transfer case engages and disengages smoothly without unusual clunking noises.
Check this by looking for any minor coolant residue near the water pump housing, as the cooling systems on the OM699 engines benefit from regular monitoring in NZ’s varied climate.
Recommended inspection of auxiliary drive belts and tensioners to ensure smooth engine operation.
Common stage for a comprehensive transmission fluid flush to maintain the longevity of the 7G-TRONIC gearbox.
Consider a full cooling system health check and potential thermostat replacement if the engine temperature fluctuates.
Prioritize high-quality engine oil changes every 10,000km to keep that turbocharger happy.
Keep the DPF (Diesel Particulate Filter) clear by ensuring the vehicle gets regular highway runs rather than just short city trips.
Inspect the undercarriage for surface rust, especially if the vehicle has been used for towing at boat ramps.
Ensure the AdBlue system is topped up with quality fluid to prevent unwanted dashboard warning lights.
Verify that all firmware updates for the infotainment and engine management have been performed by a Mercedes-Benz specialist.
Estimated repair costs if issues arise
If the vehicle is used primarily for short urban trips, you might eventually need to budget for a forced DPF regeneration or sensor cleaning to maintain efficiency.
Depending on the car's history, you might eventually need to budget for replacing worn rubber bushings to maintain the ride quality the X-Class is known for.
If this component needs attention in the future, a comprehensive service including the filter and fluid change is a sensible investment for smooth shifting.
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