2014 Mercedes-Benz B-Class 1.8L Diesel · KN63 WRT

The 2014 Mercedes-Benz B-Class presents a stable and reassuring roadworthiness profile. The most recent MOT, conducted on 11 February 2026 at 45,409 miles, passed with zero defects recorded. This clean sheet extends a consistent pattern of defect-free testing stretching back to January 2023, indicating no worsening or emerging mechanical trends. The vehicle has been maintained to a standard that consistently meets the DVSA threshold without advisories or failures across the available record. The mileage accumulation tells a clear story of very light use. Covering just 3,561 miles between the February 2025 test at 41,848 miles and the February 2026 test at 45,409 miles, the annualised rate sits well below the UK average. Over the full twelve-year span, the vehicle has averaged roughly 3,784 miles per year. The record shows no sudden spikes or suspicious gaps in odometer readings, and the progression from 32,983 miles in January 2023 to 45,409 miles in February 2026 is steady and linear. One failed test appears on 24 February 2025 at 41,842 miles, but the record explicitly notes no defects were recorded for that failure, suggesting an administrative or procedural issue rather than a mechanical fault, with a clean pass achieved the following day at 41,848 miles. Despite the clean MOT history, a buyer should still conduct a thorough physical inspection focused on components that low-mileage use can quietly degrade. Tyres may show age-related cracking and uneven wear rather than tread depth loss, so check the sidewall date codes and inner edges closely. Suspension bushes, coil springs, and shock absorbers can deteriorate from age and standing rather than mileage, so listen for clunks over rough surfaces and inspect for perished rubber. Brake discs and calipers are prone to surface corrosion on vehicles that sit for extended periods, potentially causing binding or uneven braking feel. Inspect the underside for structural corrosion, particularly around subframes, sills, and suspension mounting points, as low-mileage vehicles often see short trips that accelerate moisture-related rust. The exhaust system and DPF should also be assessed, as infrequent longer journeys can lead to soot buildup and emissions-related issues that a single annual MOT may not fully expose.