2006 Mercedes-Benz C 1.8L Petrol · AO56 ACY

This Mercedes-Benz C from 2006 has demonstrated a concerning pattern of MOT failures over the past two years, with the most recent test on 2024-01-15 having passed just three days after a failure at 131,002 miles. The lack of recorded defects in any test—even failures—suggests either a systematic oversight in the testing process or that critical issues were not captured in the official record. The repeated failures at nearly identical mileages (126,782 and 126,875 in 2022, then 131,002 and 131,004 in 2024) imply a recurring mechanical issue that was not resolved between tests, despite the vehicle passing other cycles. The most recent pass in January 2024 is now over two years old, placing it well beyond the standard 12-month MOT validity period, which raises immediate concerns about whether the vehicle has undergone any intervening maintenance or whether the failure reasons were ever addressed. The recorded mileage of 131,004 miles at the latest test suggests a consistent annual average of around 6,550 miles, which is typical for a vehicle of this age. However, the gaps between tests reveal a troubling inconsistency: the 2021 pass at 120,415 miles was followed by a 15-month gap before the 2022 failure, then another 15-month gap before the 2024 failure. This pattern of delayed testing—combined with the repeated failures—strongly indicates that the vehicle was likely driven without proper oversight between MOT cycles. The absence of any advisories or defects in the record further suggests that any issues were either not detected during testing or were deliberately overlooked, which is particularly concerning for a vehicle approaching 20 years old with high mileage. Given the repeated MOT failures without recorded defects, a buyer should prioritise an independent inspection of the braking system, suspension components, and structural integrity. The repeated failures at similar mileages in 2022 and 2024 strongly suggest a persistent issue, likely with rear brake binding, warped discs, or failing caliper pistons—common problems in high-mileage Mercedes-Benz models. The suspension should be checked for worn or leaking bushes, deteriorated coil springs, and excessive play in the steering or rear axle. Additionally, the vehicle’s underbody should be inspected for corrosion, particularly around the sills, subframe, and exhaust system, as rust can compromise structural integrity. Given the age and mileage, the exhaust emissions system—catalytic converters and oxygen sensors—should also be thoroughly tested, as these are frequent failure points in older Mercedes-Benz models. The lack of advisories in the record does not guarantee these components are sound; it merely means they were not flagged during testing.