2017 Mercedes-Benz C 2.1L Diesel · PX67 XSB

The vehicle’s most recent MOT test on 2025-10-29 at 44,427 miles passed without defects, confirming it remains roadworthy under current UK standards. However, the history reveals an unusual pattern of two consecutive failures at the same mileage (26,667 and 31,773) in October 2023 and 2024, both rectified before passing. While the last two tests have been clean, the repeated failures at identical intervals suggest either a test centre anomaly or a mechanical issue that required urgent attention—likely a recurring minor fault (e.g., minor corrosion, loose trim, or sensor calibration) rather than a catastrophic failure. The absence of advisories in the latest pass indicates no ongoing concerns, but the earlier failures warrant scrutiny of components prone to repeated inspection, such as suspension bushes, wheel bearings, or electrical connectors. The recorded mileage of 44,427 miles over nine years equates to approximately 4,936 miles annually, which is unusually low for a vehicle of this age. This suggests either very light usage or prolonged periods of inactivity, which could accelerate wear on fluids (brake, coolant, transmission) and seals. Notably, the gap between the 2023 and 2024 tests spans exactly one year (26,667 to 31,773 miles), with no intermediate mileage recorded—this could imply the vehicle was stationary or driven infrequently. Such low mileage may mask deeper issues, as components like coil springs, brake calipers, and exhaust systems can degrade even without heavy use, particularly if exposed to moisture or road salt. Given the history, a buyer should prioritise an inspection of suspension integrity, particularly rear suspension bushes and coil springs, as these are common failure points in Mercedes-Benz models and often trigger repeated MOT failures. The repeated failures at identical mileages also warrant checking for corrosion around wheel arches, subframes, and exhaust mounts, as these areas frequently cause minor defects. Binding brakes or worn brake discs were not flagged, but the tester’s repeated attention to the same mileage hints at a potential underlying issue—verify brake fluid condition and caliper wear. Finally, confirm the service history for fluid changes, as low mileage does not negate the need for periodic maintenance of power steering, transmission, and cooling systems.