2016 — 2020
2.0L Turbo (M274) - E250 Sedan/Coupe
Petrol
Listen carefully for a 'rattle' on a cold start; this can sometimes indicate the M274 engine's timing chain tensioner or variable valve timing components are beginning to show their age.
Cycle through all the steering wheel buttons and the Comand controller dial while stationary to ensure the infotainment interface is responsive and no inputs are being missed.
Perform a 'hard-stop' from low speed in a safe area to check for any shuddering or unusual feedback from the brake pads or rotors, as these are premium performance parts that see high wear.
Park on a level surface, leave the engine running, and inspect the engine bay for any faint scent of oil, which can suggest that the cam magnets might be starting to weep oil through the harness.
Consider a full transmission fluid and filter service to keep the 9G-TRONIC shifting smoothly.
Monitor the coolant expansion tank and surrounding hoses for any signs of brittle plastic or slow evaporation.
A common point where proactive inspection of the suspension bushings and engine mounts is recommended to maintain that 'Mercedes ride' quality.
Check that the service history is documented, ideally with genuine Mercedes-Benz parts used during major intervals.
Ensure the panoramic sunroof, if fitted, has had its tracks cleaned and lubricated to prevent sticking.
Check the tire wear across the inner and outer edges, as the wheel alignment on these W213 models can be sensitive to New Zealand road surfaces.
Confirm the air conditioning system is blowing ice-cold; a regas might be needed if it has lost efficiency over time.
Verify that the smart key fobs are both functional, as replacing and coding these can be a specialized task.
Estimated repair costs if issues arise
If your E250 is equipped with Air Body Control, these systems offer a fantastic ride but can eventually require maintenance. As these components age, you might eventually need to budget for replacement struts or the air compressor to keep the vehicle level.
The cooling systems in these turbocharged engines are efficient but complex. If you notice the temperature needle behaving unusually, you might eventually need to budget for a coolant pump or associated plastic cooling pipes which can become brittle over time.
To keep that signature Mercedes smoothness, these rubber mounts eventually compress or perish. If you feel excess vibration at idle, this is a common task to plan for when budgeting for long-term ownership.
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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