2016 Mercedes-Benz C 4.0L Petrol · FJ66 RZN

The latest MOT test result on 2026-08-21 shows the vehicle passed without any recorded defects, marking a positive turnaround from its previous failure on 2026-08-20, where the tyre pressure monitoring system (TPMS) was deemed inoperative. While the 2023 failure—particularly the offside front coil spring fracture—signifies a concerning mechanical failure, the intervening years have seen only advisory issues, notably front brake pad wear and tyre edge wear, which are manageable and not indicative of systemic neglect. The overall maintenance trend appears stable, with no evidence of worsening mechanical degradation since the 2023 failure, though the TPMS malfunction remains a critical oversight that must be addressed promptly to ensure compliance and road safety. The vehicle’s recorded mileage of 71,619 miles for a 2016 model represents a moderate annual usage rate of approximately 7,162 miles per year, which is consistent with typical usage patterns for its age. This rate suggests a vehicle that has been driven regularly but not excessively, reducing the likelihood of severe wear from high-mileage accumulation alone. However, the absence of significant mileage gaps does not preclude potential issues arising from prolonged idleness, such as standing corrosion on brake components, caliper binding, or fluid degradation in hydraulic systems. Additionally, the 2023 failure of the offside front coil spring at this mileage underscores the importance of monitoring suspension integrity, especially given that coil springs are prone to fatigue failure over time, often manifesting as uneven ride quality or clunking noises during cornering or over bumps. For a prospective buyer, the most urgent action should be to resolve the tyre pressure monitoring system (TPMS) malfunction, as this is a major MOT failure and a safety-critical issue. The TPMS failure could lead to underinflated tyres, which exacerbate wear, reduce fuel efficiency, and increase the risk of blowouts. During a test drive, check for consistent tyre pressure readings across all four tyres, and verify that the TPMS displays accurate readings when the vehicle is stationary and running. If the system cannot be repaired or replaced, a temporary workaround may involve using a manual tyre pressure gauge, but this is not a long-term solution. Beyond the TPMS, the front brake pads are wearing thin, with only one-third of their original thickness remaining, which is a significant advisory. This condition requires immediate attention to prevent overheating, reduced braking effectiveness, and potential damage to the brake discs. On a test drive, listen for a grinding or squealing noise when applying the brakes, especially at low speeds, which indicates metal-to-metal contact between the pads and discs. Additionally, inspect the front tyres for uneven wear patterns, particularly on the inner edges, which may suggest misalignment or suspension issues. Given the vehicle’s age, it is also prudent to check for tyre sidewall perishing, which can compromise structural integrity and safety, particularly if the tyres have been stored for extended periods. Finally, verify that the service book records include the mandatory fluid servicing—specifically, the brake fluid, coolant, and transmission fluid—due to their calendar-based degradation, even if mileage is moderate. Inspect the 12V battery for signs of corrosion or weakness, as standing vehicles can lead to battery drain, and check for any fluid leaks under the vehicle, particularly around the front suspension and exhaust system, to identify potential corrosion or component failure risks.