2009 Mercedes-Benz B-Class 2.0L Diesel · FN09 KLZ

The 2009 Mercedes-Benz B-Class presents a stable and highly favourable maintenance trend, culminating in a clean pass during the most recent MOT on 25 February 2026 at 81,495 miles. The tester recorded zero defects, indicating the vehicle currently meets all required safety and environmental standards. A preceding test on 24 February 2026 at the identical mileage shows a failure, though notably with no defects recorded, suggesting an administrative or procedural issue rather than a mechanical fault. The absence of any advisories or failures across the documented history points to a well-maintained vehicle with no recurring mechanical or structural issues. The recorded mileage of 81,495 miles equates to a low annual average of roughly 4,794 miles over the vehicle's seventeen-year lifespan. However, the recent usage pattern tells a different story. Between the February 2023 test at 57,382 miles and the February 2026 test at 81,495 miles, the car covered 24,113 miles in three years, averaging just over 8,000 miles annually. This indicates the vehicle has transitioned from a period of very light use or prolonged standing to a phase of regular, consistent driving. The steady accumulation of miles without corresponding mechanical advisories demonstrates the drivetrain has coped well with this increased utilization. Despite the flawless MOT record, the vehicle's age and initial period of low mileage warrant a thorough physical inspection. Buyers should pay close attention to perishable rubber components, such as suspension bushes and tyre sidewalls, which can degrade from age and standing rather than mileage. The exhaust system and brake discs require checking for surface corrosion, a common issue on vehicles that spend extended periods stationary without the heat cycles that help disperse moisture. Inspecting the underbody for structural rust remains prudent, ensuring the low historical mileage has not masked deterioration caused by prolonged dormancy.