2001 Mercedes-Benz SLK 2.3L Petrol · G10 ODH

The 2025‑09‑17 MOT at 121,569 miles failed, making the 2001 Mercedes‑Benz SLK not roadworthy. The record shows a worsening trend, with repeated failures since 2018 that include severe brake pipe corrosion, persistent suspension arm and sub‑frame rust, and recurring ABS and brake efficiency faults. The mileage of 121,569 at 25 years averages 4,863 mi per year, lower than typical wear rates for a vehicle of this age. From 2015 (106,479 mi) to 2016 (110,905 mi) the mileage rose modestly, then accelerated to 118,605 mi by 2021 and 121,569 mi by 2025, indicating periods of reduced use interspersed with gradual accumulation; the absence of MOT data between 2018 and 2019 suggests possible standing periods that may have masked additional corrosion. A buyer should inspect the corroded suspension arms, especially the off‑side rear mounting area where a floor hole was recorded, and verify the structural integrity of the front and rear sub‑frames. The brake system requires close examination of all pipes for excessive corrosion at the ends, verification of brake fluid visibility, and assessment of rear disc wear and pad thickness, as the discs have repeatedly been noted as worn, pitted or scored. Wheel bearing play in both front bearings and any ABS warning lamp faults must be confirmed, while the front integral body structure and rear fuel pipe should be checked for ongoing corrosion, as these components have shown persistent degradation throughout the history.