2010 — 2013
3.5L Petrol - E350
Petrol
While driving at low speeds, gently turn the steering wheel lock-to-lock to feel for any binding or noise, as the steering rack on these can sometimes develop wear over high mileage.
Check this by idling the engine until it reaches operating temperature; listen closely for any metallic ticking or rattling from the top of the engine, which can be an indicator of early chain tensioner wear.
While cruising on a flat road, pay attention to the gear shifts; they should be seamless. Hesitation or clunking during shifts might suggest the transmission control module or fluid requires professional inspection.
Before turning off the engine, toggle through the infotainment display and operate all seat adjustments, as the complex electrical systems in the W212 can occasionally show age-related glitches in seat motors or sensor modules.
Consider a full transmission fluid and filter flush, as this is vital for the longevity of the 7G-Tronic gearbox.
Monitor the condition of the engine mounts and transmission mounts, as these often show signs of sagging or vibration around this point.
Keep an eye on the suspension air-struts or dampers if equipped, as they often reach a point where efficiency can decrease.
Ensure you have a record of regular oil changes using high-quality synthetic oil, as the 3.5L engine relies on clean oil to keep the variable valve timing system happy.
Check for any signs of oil seepage around the camshaft solenoids or magnets during your visual inspection.
Confirm the brake fluid has been flushed at two-year intervals to keep the braking system sharp and responsive.
Take a moment to verify that the cabin air filter has been changed recently to maintain good airflow and reduce condensation inside the cabin.
Ensure the coolant has been flushed according to the schedule to prevent any issues with the heater core or thermostat housing.
Estimated repair costs if issues arise
In cars of this age, it's common to consider that these components work hard; if you notice cold-start rattles, you might eventually need to budget for a chain and tensioner refresh to maintain engine health.
If your specific model is equipped with airmatic suspension, it's helpful to remember that air bags can perish over time. If the car sags after sitting for a few days, you might need to budget for replacement struts.
Depending on the car's history, you might eventually need to budget for a transmission electronic plate repair if you experience erratic shifting patterns.
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