2007 Mercedes-Benz B-Class 1.7L Petrol · SL57 YMO

The most recent MOT history for this 2007 Mercedes-Benz B-Class reveals a concerning pattern of repeated failures despite no recorded defects on test dates. The vehicle failed three consecutive tests in late 2024 and early 2025, all at identical mileages (26,384 and 34,055 miles), before passing twice in November 2025—yet the lack of defect details raises suspicion. The absence of any advisory notes or specific fault codes suggests either a systematic issue with the testing process or a vehicle that has been driven only for MOT compliance rather than genuine roadworthiness. The latest pass in November 2025 is now over eight months old, which for a vehicle of this age and mileage is unacceptable—critical components like brakes, suspension, and emissions systems may have degraded significantly since then. The recorded mileage of 34,055 miles over nearly 19 years equates to an average of just 1,792 miles annually, which is unusually low for a car of this vintage. The gap between the 2024 and 2025 MOTs—where mileage remained static at 26,384 miles for two tests—indicates prolonged periods of inactivity, likely storage. This stagnation exacerbates wear on suspension bushes, coil springs, and brake calipers, as rubber and metal components degrade even when stationary. The lack of progressive mileage accumulation also suggests the vehicle may have been driven sporadically, if at all, between services, leaving fluids unchecked and critical systems prone to corrosion or failure. The absence of any mileage progression between October 2024 and November 2025 further implies the car was not in regular use, heightening concerns over neglected maintenance. Given the repeated failures and the vehicle’s age, a buyer should prioritise an immediate, thorough inspection of the braking system—particularly rear calipers and discs—for binding or excessive wear, as this is the most likely cause of the unexplained failures. The suspension should be scrutinised for worn or leaking bushes, corroded coil springs, and uneven tyre wear, which would indicate long-term neglect. Exhaust emissions systems, including the catalytic converter and oxygen sensors, should be tested for efficiency, as these are common failure points in older Mercedes-Benz models. Structural corrosion, especially around wheel arches, sills, and the subframe, must be checked, as rust can compromise the vehicle’s integrity. The lack of advisory notes in past MOTs means no prior warnings were issued, so hidden issues like failing power steering pumps, water leaks into the cabin, or electrical faults could now be critical. Given the eight-month gap since the last pass, a pre-purchase inspection by a qualified mechanic is essential to verify the vehicle’s current condition.