2009 — 2011
3.5L M272 E35 V6 - E350
Petrol
Listen for a 'rattle' at cold start. The M272 engine can occasionally experience timing chain tensioner wear; check if the engine sounds smooth immediately after ignition.
Cycling through all gear positions while stationary and then accelerating gently. Note any hesitation or 'flaring' in the 7G-Tronic transmission, as these can be sensitive to fluid degradation.
Take the car over varying road surfaces to feel for 'knocking' or 'clunking' from the front suspension. W212s are robust, but control arm bushings and air struts (if fitted) are common wear items at this age.
Operate every electronic feature, including the COMAND system, seat adjustments, and sunroof. These vehicles have complex wiring, and intermittent electrical issues are worth noting before you buy.
Usually marks the point where suspension bushings and engine mounts are worth a professional inspection.
A common window for potential transmission service, including a filter and fluid change to keep gear shifts crisp.
Time to monitor auxiliary belt drive components and ensure the cooling system is performing optimally.
Check for a consistent service history, preferably with a Mercedes specialist or dealership.
Ensure the transmission fluid has been changed at least once in its life; it helps longevity significantly.
Look under the hood for any signs of oil seepage around the cam covers, which is helpful to catch early.
Verify the battery health, as these cars are quite sensitive to voltage drops which can trigger false dashboard warnings.
Check that the tyre wear is even across the tread, as this tells you a lot about the health of the suspension alignment.
Estimated repair costs if issues arise
If the car sits lower after being parked for a few days, it may indicate a leak in the air system. It is wise to consider this a future maintenance item for comfort and ride height.
To keep your gear shifts silky smooth, a full transmission fluid and filter service is a great preventative measure if it hasn't been done recently.
These are fluid-filled mounts that naturally wear down over time. If you notice a slight vibration at idle, you might eventually need to budget for a fresh set to restore that famous Mercedes smoothness.
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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