2014 — 2018
1.6L M274 I4 Turbo - Standard trim
Petrol
Check this by accelerating from a standstill in 'Comfort' mode. | Note: Observe for any hesitation or a slight 'shudder' in the 7G-Tronic gearbox, as occasional software updates or fluid refreshes are sometimes needed to keep these shifts smooth.
While driving on a quiet road, turn the audio off and listen for any rattles. | Note: Some W205 models have been known to develop minor interior trim squeaks over time; it is worth checking the center console and door panels to see if they feel solid.
During the inspection, check the coolant expansion tank. | Note: Look for any signs of white residue or leakage, as it is occasionally helpful to monitor the cooling system seals on the M274 engine as these vehicles reach higher mileage.
Check this by turning the steering wheel lock-to-lock while stationary. | Note: Listen for any unusual groaning sounds, as the electronic steering components may benefit from a check to ensure everything is operating quietly as intended.
Usually time for a major transmission fluid flush and spark plug replacement to maintain engine efficiency.
A common point to have a thorough inspection of the suspension bushings and engine mounts for any signs of age-related wear.
Often recommended to check the auxiliary drive belt and tensioner to ensure continued reliability.
Follow the Mercedes-Benz 'A' and 'B' service schedule strictly to keep the digital service history up to date.
Ensure the engine oil is changed every 15,000km or annually, whichever comes first, using the correct MB-approved synthetic oil.
Check the tire pressure regularly, as the W205 is quite sensitive to incorrect pressures regarding ride comfort and fuel economy.
Keep the panoramic sunroof drains clear if the car is equipped with one to prevent any water ingress issues.
Use a high-quality fuel, as the M274 turbo engine performs best and stays cleaner when fueled with 95 or 98 octane petrol.
Estimated repair costs if issues arise
In cars of this age, it is worth keeping an eye on these components. If they show signs of oil seepage, they are a straightforward fix to replace before it impacts the wiring harness.
Depending on the car's history on uneven roads, you might eventually need to budget for refreshing the front suspension arms to maintain that signature smooth Mercedes ride quality.
If this component needs attention in the future, it is a common preventative maintenance task on the M274 engine to ensure consistent engine cooling and longevity.
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