2008 Mercedes-Benz A-Class 2.0L Diesel · KW57 AHN

A persistent theme across the MOT record is progressive deterioration of the drivetrain and braking ancillary components – the constant‑velocity (CV) boots on both front drive shafts have been flagged repeatedly as severely deteriorated or split, and the front and rear brake hoses have been noted as slightly deteriorated on successive tests. Although the latest 10 June 2026 test was passed, it still recorded a near‑side rear service brake binding advisory and the same CV‑boot issue, indicating that the underlying wear pattern has not been fully resolved. Earlier failures – notably the off‑side rear brake pipe corrosion in 2023 and the excessive wear of both front lower suspension arm ball joints in 2024 – show that major defects have arisen but were remedied sufficiently to achieve pass status, leaving a mixed picture of intermittent major repairs amid ongoing minor wear. With 105,708 mi recorded over an 18‑year lifespan the average annual accumulation is roughly 5,900 mi, well below the typical usage rate for a vehicle of this age. The MOT history shows annual testing without long gaps, suggesting the mileage figure is realistic rather than a result of prolonged storage. Low annual mileage reduces cumulative stress on wear items such as tyres, brakes and suspension, yet age‑related corrosion and rubber hardening remain concerns, especially for components already flagged as deteriorated. When inspecting the car, pay particular attention to the condition of the front drive‑shaft CV boots: look for cracked, dry, or missing rubber, and listen for a clicking or whine from the front wheels under acceleration, which can indicate joint ingress of dirt. The brake hoses should be examined for surface cracking, swelling or fluid leakage, and the pedal should feel firm without a spongy give that could betray internal hose degradation. The near‑side rear service brake binding advisory suggests the rear caliper or piston may be sticking; a test‑drive should reveal any uneven rear braking feel, a pull to one side when applying the brakes, or a pulsating pedal. Verify the integrity of the rear brake pipe – any signs of rust, corrosion, or grease buildup around the pipe could presage a future failure. The presence of an under‑tray that obstructs full under‑body inspection means a thorough visual check of the chassis, subframe and exhaust mounting points is essential; look for rust, especially around the rear brake pipe and suspension mounting areas. Given the history of ball‑joint wear on both front lower suspension arms, probe the steering feel for looseness or clunking over bumps, and inspect the joints for excessive play. Replacing the deteriorated CV boots, both front brake hoses and the rear brake pipe, and addressing any tyre damage (the off‑side rear tyre showed cracking and a previous bulge on the front tyre) will be prudent steps before committing to purchase.