2015 Mercedes-Benz B-Class 1.5L Diesel · BK65 XJL

Recurring tyre structural integrity issues represent the primary mechanical concern for this vehicle, as evidenced by a pattern of sidewall cracking and deep perishing that has persisted across multiple annual inspections. While the car successfully passed its most recent MOT on 25 August 2026, the current advisories for both front tyres being worn on the edges and showing signs of cracking indicate that the trend of tyre degradation remains active. The 2024 test failure, which identified dangerous structural damage to the rear tyres, highlights a history of neglect regarding rubber condition that necessitates a thorough inspection of all four corners before any further road use. With a total recorded mileage of 40,115 over eleven years, the vehicle averages approximately 3,647 miles annually, suggesting a profile of light, intermittent usage. While this low accumulation rate avoids the high-mileage wear typically seen on drivetrain components, it does not exempt the vehicle from the mechanical risks associated with prolonged periods of inactivity. Components such as rubber seals, brake friction surfaces, and suspension bushings can deteriorate prematurely when a vehicle sits stationary for extended durations, meaning the low mileage should be viewed as a factor that requires specific scrutiny of perishable components rather than an indicator of reduced mechanical wear. During your test drive, pay close attention to the front suspension and steering feedback, as the recurring edge wear on the front tyres may point toward underlying tracking or alignment issues that were not explicitly flagged but are often concurrent with such wear patterns. Listen for any knocking or metallic clatter when traversing uneven surfaces, which could indicate that suspension bushes or drop links have hardened or perished due to the vehicle's low-usage history. If the steering feels vague or pulls consistently to one side, it may confirm that the alignment has been compromised by the same factors affecting the current tyre condition. Regarding the braking system, the 2025 advisory for fluctuating rear service brake performance suggests the potential for binding calipers or uneven pad deposition on the discs. When conducting your road test, perform a series of controlled stops from moderate speeds to check for any pulsing sensation through the brake pedal or dragging sounds that would indicate a seized or sticking mechanism. Ensure that the parking brake engages firmly and releases without resistance, as the rear brake assembly has shown sensitivity in recent testing cycles. Given the history of sidewall degradation, a professional inspection of the tyre inner and outer faces is essential to ensure no hidden structural failures remain.