2015 Mercedes-Benz C 2.1L Diesel · LM65 AAN

The most recent MOT test on 2025-10-16 resulted in a clean pass with no recorded defects, marking a positive deviation from the previous two years, which saw consistent advisories related to tyre wear nearing legal limits. This suggests a stable maintenance trend up to this point, though the recurring advisories from 2023 and 2024 indicate ongoing tyre wear patterns that require attention. The absence of failures in the latest test does not necessarily mean the vehicle is free of underlying issues, as the advisories suggest a gradual but persistent loss of tread depth, particularly on the front tyres, which may accelerate with further use. The vehicle’s performance in the latest MOT should be viewed cautiously, as tyre wear is a consumable item that cannot be replaced indefinitely without risking road safety. The recorded mileage of 71,504 miles for a vehicle aged approximately 11 years represents a reasonable annual usage rate of around 6,500 miles per year, which is typical for a car of this age and class. This figure does not suggest excessive wear beyond what is expected from regular use, but it also does not indicate a particularly light or heavy usage profile. The lack of significant mileage gaps implies the vehicle has been in regular service, which could contribute to wear on suspension components, brakes, and drivetrain elements. However, the absence of high-mileage-related failures in the MOT history suggests that the wear has not yet reached critical levels, but periodic checks—particularly of suspension bushings, brake pads, and fluid levels—would remain prudent. Given the recurring tyre advisories from the past three MOTs, the prospective buyer should prioritise a thorough inspection of the tyres, including checking for uneven wear patterns that could indicate misalignment, poor tyre pressure, or suspension issues. On a test drive, listen for unusual noises from the front wheels, such as clunking or grinding, which may signal worn suspension components or misaligned wheels. The advisories suggest the tyres are close to the legal minimum tread depth, so replacing them promptly would be advisable to prevent hydroplaning risks during wet conditions. Additionally, verify the tread depth across all four tyres to ensure uniformity, as asymmetrical wear can lead to handling instability. For the broader mechanical condition, the buyer should conduct a visual and functional inspection of the vehicle’s standing corrosion, particularly around the wheel arches, undercarriage, and beneath the bonnet, as prolonged periods of disuse can accelerate rust formation. Check the 12V battery for signs of weakness or corrosion on terminals, given the vehicle’s age and the potential for fluid degradation over time. The brake system should be inspected for signs of corrosion on discs or binding calipers, which can occur when the vehicle stands for extended periods without use. Fluid levels—particularly brake fluid, coolant, and engine oil—should be checked for consistency and any signs of contamination or degradation, as these fluids can break down over time regardless of mileage. Finally, ensure that the service book is up to date, as the vehicle’s age and mileage warrant a comprehensive service, including timing belt replacement if applicable, and a full brake and suspension inspection.