2009 Mercedes-Benz S-Class 3.0L Diesel · 1174 BB

A pattern of recurring brake pipe corrosion has transitioned into a period of clean inspection results, following several years of advisories. Between 2019 and 2021, the MOT records consistently flagged corrosion on the offside front and offside rear brake pipes, noting they were covered in grease or other materials. However, the vehicle has since achieved four consecutive passes with no recorded defects or advisories, including the most recent test on 02 February 2026. This indicates that the previously identified corrosion on the brake lines has either been addressed or has not progressed to a level requiring formal advisory status in recent years. The vehicle's usage profile is characterised by exceptionally low annual mileage, averaging approximately 2,655 miles per year over its seventeen-year lifespan. With a recorded mileage of 45,141, the car has been driven significantly less than the typical UK average for a vehicle of this age. While low mileage can reduce wear on certain mechanical assemblies, such a low rate of accumulation often suggests the vehicle has spent extended periods stationary. This usage pattern necessitates a close inspection of rubber components and seals that can perish or harden when not regularly cycled through their full range of motion. Prospective buyers should focus their physical inspection on the braking system and the condition of the hydraulic lines, specifically looking for any signs of weeping or surface oxidation that may have emerged since the last test. Given the history of brake pipe advisories, it is prudent to check that all connections are secure and that there is no evidence of recent remedial work that might have obscured older corrosion. During a test drive, pay close attention to the brake pedal feel; any sponginess, a soft pedal, or a pulsating sensation under braking could indicate air in the system or issues with the hydraulic integrity that were previously flagged. Further attention should be directed toward the suspension and steering components to ensure that the low usage has not resulted in seized linkages or perished bushes. Listen for any rhythmic knocking, clunking, or creaking sounds when navigating uneven surfaces or turning the steering wheel at low speeds, as these are common symptoms of worn suspension bushings or ball joints. Additionally, check for any fluid leaks around the engine and gearbox, as long periods of inactivity can sometimes lead to seal shrinkage and subsequent oil weeping.