2015 Mercedes-Benz A-Class 1.5L Diesel · NA56 ALE

The most recent MOT test on 2026-08-14 resulted in a clean pass, though it included a single advisory related to the near-side rear child seat obstructing a full inspection of the adult seatbelt system. This outcome contrasts sharply with the vehicle’s two previous failures in 2024 and 2025, where recurring advisories on brake discs and pads—both front and rear—were noted alongside major defects in the rear windscreen wiper, side repeater light, and rear wheel fixing. While the 2025 failure highlighted persistent brake wear and structural issues, the 2026 test suggests either a resolution of those problems or a shift in inspection focus, though the brake advisories remain a consistent pattern. The overall maintenance trend appears to be stable in terms of passing MOTs, but the recurring brake-related advisories indicate ongoing wear that demands closer attention to prevent further deterioration. The vehicle’s recorded mileage of 114,629 miles at the time of this assessment represents a moderate annual usage rate of approximately 10,421 miles per year, which is typical for a 11-year-old A-Class given its age and class. This figure does not suggest excessive wear beyond what is expected from regular, moderate use, though the consistent advisories on tyre wear—particularly the repeated close-to-legal limit warnings—may indicate either aggressive driving habits or uneven loading conditions that accelerate tyre degradation. The absence of significant mileage gaps suggests the vehicle has been in regular service, but the high annual mileage could accelerate consumable wear, including brake components, suspension elements, and fluid degradation over time. It is worth noting that the recorded mileage could also reflect periods of prolonged standing, which may have contributed to minor standing corrosion or fluid stagnation in certain systems. For a prospective buyer, this vehicle’s roadworthiness is heavily influenced by the persistent brake advisories, which warrant immediate inspection. The front and rear brake discs show noticeable pitting and scoring, with pads worn thin, indicating that the braking system is approaching or has exceeded its service life. On a test drive, listen for uneven brake pedal response, a grinding or squeaking noise during deceleration, or a pulsation that could signal warped discs or binding calipers. Inspect the brake fluid level and condition—low or discoloured fluid may signal contamination or leakage—and check for oil or grease stains around the brake components, which could indicate fluid leaks or worn seals. Additionally, verify that the brake discs are evenly worn across both sides of each wheel, as asymmetry can lead to uneven tyre wear and premature failure. Beyond the brake system, the tyre advisories are critical to address. The offside and nearside front and rear tyres have been worn close to the legal limit in multiple MOTs, suggesting either directional bias, uneven loading, or excessive speeding. Replace these tyres immediately to prevent hydroplaning risks and further structural damage to the vehicle’s suspension or steering components. The rear wheel fixing failure in 2025 is a major defect that must be resolved, as a missing or damaged wheel nut could lead to catastrophic failure under load. Check the wheel nuts for tightness during the inspection, and ensure the wheel itself is securely fitted and balanced, as an improperly fitted wheel can cause vibration or uneven tyre wear. Finally, while the MOT history is clean aside from the child seat advisory, a thorough physical inspection should include checking for tyre sidewall perishing or cracking from age, inspecting the exhaust for corrosion or leaks, and verifying that the suspension bushes and coil springs are free from excessive play or damage. Given the vehicle’s age, consider a full fluid service—including brake, coolant, and differential fluids—within the next 12 months to mitigate calendar-based degradation.