2013 Mercedes-Benz C 6.2L Petrol · PR13 STC

The most recent MOT test on 2026-03-24 resulted in a clean pass, with no defects recorded, marking a positive turnaround following a failure in early 2024. This suggests a stable maintenance trend over the past two years, though the vehicle’s history includes several advisories and a single failure. The 2024 failure highlighted dangerous tyre defects—both nearside and offside rear tyres falling below the legal minimum tread depth of 1.6mm—indicating either neglect or rapid wear, which could have compromised handling and hydroplaning safety. The subsequent advisories from 2019 and 2021 on front tyre wear and brake disc condition suggest earlier attention was needed, potentially deferred due to lower priority or operational necessity. The absence of further failures since 2024 is encouraging, but the oil leak advisory from 2025 remains a critical point; while not excessive, persistent oil loss can lead to engine contamination, reduced lubrication efficiency, and long-term damage if unresolved. The vehicle’s recorded mileage of 81,577 miles at 13 years old represents a moderate annual usage rate of around 6,275 miles per year, which is typical for its age and class. This pace implies a mix of regular driving and periods of inactivity, which can accelerate wear in certain systems. For instance, standing for prolonged periods may contribute to brake disc corrosion or caliper binding, particularly on the front brakes where advisories were noted. Tyre wear patterns, especially the edge wear from 2019 and the recent rear tyre failures, could stem from misalignment, underinflation, or aggressive driving habits. The oil leak advisory also warrants consideration in relation to mileage, as higher mileage tends to accelerate lubricant consumption and component failure if the source is not addressed. As a prospective buyer, the most urgent checks should focus on the tyre condition and the persistent oil leak. Verify that all tyres—particularly the rear set—have been replaced since the 2024 failure, as tread depth below 1.6mm is a safety hazard. Listen for any oil-related noises, such as a metallic grinding when the engine is cold or a smooth, consistent oil consumption pattern. On the test drive, check for uneven tyre wear, which may indicate misalignment or suspension issues, and monitor for any clunking noises from the rear suspension, which could signal worn bushes or damaged coil springs. The front brake discs should be inspected for corrosion or binding, especially if the vehicle has been stationary for extended periods, as this can lead to reduced braking efficiency or even failure. For broader inspection, examine the vehicle’s exterior for signs of rust, particularly around wheel arches, rocker panels, and beneath the bodywork, which can compromise structural integrity over time. Check the 12V battery for signs of corrosion on terminals and test its charge capacity, as older vehicles are more susceptible to battery failure, especially if driven infrequently. Inspect the fluid levels—oil, coolant, brake fluid, and transmission fluid—visually for contamination or discoloration, as fluid degradation accelerates with age and lack of use. Verify that service records are up to date, particularly for the oil change interval, which for this engine type should be every 6,000 to 10,000 miles or annually, whichever comes first. Finally, consider a professional pre-purchase inspection to confirm the oil leak’s source and assess the condition of internal components like the engine mounts or suspension, as these can fail silently over time.