2018 Mercedes-Benz B-Class 1.5L Diesel · DF67 UPS

The most recent DVSA MOT test, conducted on 13 September 2025, resulted in a pass with no defects recorded, which represents a positive outcome for the vehicle's current roadworthiness status. However, the same date also shows a prior failure that was subsequently rectified, related to an offside front tyre having had its tread recut, a practice that compromises structural integrity and is prohibited under MOT regulations. Reviewing the broader history, the vehicle has consistently passed its annual tests since 2021, with only minor advisories raised, predominantly concerning front tyre condition and wear patterns. The recurrence of advisories on the front tyres across multiple test cycles, particularly the edge wear noted in January 2022 and the damage advisory in August 2024, suggests an ongoing monitoring requirement rather than a worsening mechanical trajectory, indicating the vehicle has otherwise been maintained to a satisfactory standard. With a recorded mileage of 29,762 miles over an eight-year service life, this Mercedes-Benz B-Class has averaged approximately 3,720 miles annually, which is considerably below the typical usage profile for a vehicle of this type and age. Such low annual mileage often implies extended periods of standing or only short, infrequent journeys, conditions that carry specific mechanical implications distinct from high-mileage wear. Components prone to degradation through lack of use rather than mechanical fatigue are of greater concern here, including brake system binding, fluid degradation, and age-related material deterioration, rather than typical wear-and-tear items like clutch friction or engine internal components. The mileage consistency across the recorded MOT history suggests no significant gaps or unusual accumulation, reinforcing the likelihood of light, possibly urban or stop-start usage patterns. Given the low mileage and the eight-year calendar age, a prospective buyer should prioritise several physical inspection points that do not always manifest in MOT testing. Brake discs and calipers are particularly susceptible to corrosion and seizing when vehicles stand idle, especially in damp UK conditions, so a thorough check for binding calipers, uneven pad deposition, and surface corrosion on the discs is essential, ideally accompanied by a test drive to detect any pulling, juddering, or uneven braking response. Tyre condition warrants close scrutiny beyond simple tread depth, as the history of front tyre advisories indicates prior edge wear; check the sidewalls for perishing or cracking due to age, as rubber compounds degrade with time regardless of mileage. The 12V battery health should also be verified, as low-mileage vehicles frequently suffer from chronic undercharging leading to premature battery failure, and the date code on the existing unit should be confirmed. Fluid servicing intervals are calendar-based rather than purely mileage-dependent, and with this vehicle approaching nine years of age, the coolant, brake fluid, and automatic transmission fluid should all be considered due for renewal or at minimum verified for condition and specification. Undertray and engine cover advisories from the 2021 test are relatively benign but should be confirmed as still securely fitted to prevent water ingress into mechanical components and to maintain aerodynamic efficiency. During the test drive, listen for any suspension clonks or knocking that may indicate perished bushes or worn top mounts resulting from age rather than mileage, and observe for any warning lights on the instrument cluster, particularly for emissions systems, brake wear sensors, or AdBlue faults common to Mercedes-Benz diesel and petrol variants of this era. A pre-purchase inspection by a Mercedes-Benz specialist or independent German marque garage would be highly advisable given the low-mileage profile and the need to verify time-sensitive service items that fall outside standard MOT parameters.