2016 Mercedes-Benz C 3.0L Petrol · OY66 OBO

The latest DVSA MOT test on 2026-07-28 resulted in a passing grade, though it revealed two critical advisories that warrant immediate attention. The near-side front shock absorber exhibits light oil misting, a condition that typically indicates progressive wear within the damper cylinder or internal seals, which can lead to reduced damping effectiveness and increased road noise or body roll during cornering. The offside front constant velocity (CV) joint boot is severely deteriorated, exposing the joint to contaminants and risking premature failure, which may manifest as a clunking or rattling noise from the front wheel assembly, particularly when accelerating or braking. While these issues do not compromise roadworthiness, they represent maintenance priorities to prevent further damage to the suspension and drivetrain components. The vehicle’s recorded mileage of 86,059 miles over roughly ten years reflects a moderate annual usage rate of around 8,606 miles per annum, which is consistent with typical usage patterns for a car of this age and model. The absence of significant mileage gaps suggests the vehicle has been in regular service, though the consistent wear observed in the CV joint boot and shock absorber could be attributed to either prolonged exposure to road debris or less-than-optimal maintenance practices. Higher mileage tends to accelerate wear on consumables like tyres, brake pads, and suspension components, but the current mileage alone does not justify alarm unless paired with visible signs of excessive use, such as uneven tyre wear patterns or excessive road noise. For a prospective buyer, this Mercedes-Benz C-Class presents a number of critical checks to perform before purchase, particularly focusing on the suspension and drivetrain. The light oil misting in the near-side front shock absorber should prompt a visual inspection of the damper cylinder for signs of leakage or internal damage, and a test drive to listen for any signs of reduced damping, such as excessive body roll or a soft, spongy feel in cornering. The severely deteriorated CV joint boot requires immediate replacement, as exposed CV joints are prone to failure within weeks, leading to catastrophic drivetrain damage and a costly repair. Symptoms to watch for include a persistent clunking noise from the front wheel when accelerating, a vibration that increases with speed, or a wobbling sensation in the steering wheel. Beyond the immediate concerns, the vehicle’s age and usage profile necessitate a thorough inspection of other high-wear areas. Given the advisories on brake discs from the 2019 MOT, it is advisable to check for signs of corrosion or binding on the discs and calipers, which can occur when the vehicle stands for extended periods, leading to rust buildup or seized components. Test the brakes for any signs of pulsation or shuddering, which could indicate warped discs or worn linings, and verify that the brake fluid level is adequate and free from contamination. Additionally, since the vehicle has been in service, the tyre tread depth should be checked for uniformity, and the sidewall for any signs of cracking or perishing, which can weaken the tyre structure over time. Finally, consider testing the 12-volt battery and starter motor, as prolonged idling or infrequent use can lead to degraded battery health or electrical system issues. It is also prudent to verify the service history for fluid changes, particularly the brake fluid, which should be replaced every two years or 60,000 miles to prevent corrosion of the brake system components.