2017 Mercedes-Benz C 3.0L Petrol · AF17 AAV

The latest MOT test on 2026-06-11 resulted in a clean pass, marking the vehicle’s most recent inspection without any recorded defects. However, the broader MOT history reveals a pattern of recurring advisories and one dangerous failure, indicating that while the vehicle has maintained roadworthiness in recent years, underlying wear and potential long-term issues have been present. The failure in 2024-04-23—where both inner front tyres were found to be below legal minimum tread depths—suggests either neglect during previous ownership or accelerated wear, particularly if the vehicle was driven heavily or exposed to harsh conditions. The advisories from 2025-05-23, such as the offside front shock absorbers showing light oil misting and the offside rear tyre approaching the legal limit, point to gradual degradation in suspension components and tyre performance that may have been overlooked. These trends suggest a need for heightened scrutiny during due diligence, as the vehicle’s condition may have been marginal at critical points rather than consistently robust. The recorded mileage of 87,194 miles for a 2017 model represents a moderate annual usage rate of approximately 9,688 miles per year, which is within the expected range for a vehicle of this age and class. However, the gap between the last two MOTs (from 2024-05-27 to 2025-05-23) spans 12 months, which could imply periods of prolonged inactivity or underutilisation. Prolonged standing, especially in a climate prone to moisture or salt, can accelerate corrosion in brake components, caliper binding, and structural elements, even if mileage alone is not excessively high. Conversely, if the vehicle was driven more heavily in recent years, the wear on tyres, suspension, and drivetrain components may have been more pronounced, particularly given the 2024 failure. The advisories from 2025 suggest that the offside rear tyre was worn unevenly, which could indicate misalignment, incorrect tyre pressures, or poor alignment maintenance, all of which warrant further investigation. For a prospective buyer, the most critical areas to inspect are the front and rear tyres, given the history of tread depth issues and uneven wear. Begin by checking the inner and outer edges of the offside front tyre for excessive wear or balding, as the 2024 failure highlighted a failure to meet legal minimum tread standards. Listen for any clunking noises from the suspension during cornering or bumps, which could indicate failing shock absorbers or worn suspension bushes. The offside front shock absorbers showing light oil misting in 2025 suggests they may be nearing end-of-life, and their condition should be thoroughly assessed—resistance to compression or a soft, spongy feel during a test drive would be cause for concern. Additionally, examine the brake system for signs of corrosion on discs or binding calipers, as prolonged standing can lead to rust buildup, particularly on the offside side where moisture may have accumulated. Beyond mechanical checks, focus on the vehicle’s fluid levels and overall maintenance history. Given the age and mileage, the engine oil, transmission fluid, and coolant should be serviced according to Mercedes-Benz’s recommended intervals, which for this model typically align with 15,000 to 30,000 miles or every 12 months, whichever comes first. Check the 12V battery for signs of weakness or corrosion on terminals, as older vehicles are more susceptible to battery failure, especially if driven sporadically. Inspect the central front windscreen for any cracks or damage that could compromise visibility, as noted in the 2022 MOT. Finally, verify that the service book has been updated, particularly for the suspension, brakes, and tyre replacements, to confirm that any past advisories were addressed. If the vehicle has been stored for extended periods, consider a thorough inspection of the exhaust system for leaks or corrosion, as well as the fuel system for signs of contamination or water ingress.