2000 Mercedes-Benz CLK 2.3L Petrol · W188 AOB

This Mercedes-Benz CLK presents a roadworthiness profile dominated by chronic corrosion and brake wear issues, with the most recent test on 2024-08-16 recording a pass alongside a minor wiper defect and advisories on all four brake discs. The pattern over the recorded tests shows brake discs as a near-constant advisory, first flagged on the fronts in 2019, recurring on the rear in 2022, and then appearing on all four corners by 2024, indicating progressive disc surface deterioration across the entire braking system. The single failure on 2021-08-04 was driven by both front-to-rear brake pipes being classified as excessively corroded, and although the vehicle passed two days later after repair, subsequent advisories on brake pipes and fuel pipes through 2021 and 2022 confirm persistent corrosion concern in the underbody pipework. A rear subframe corrosion advisory in 2023 adds to the structural picture, and by 2021 the underside of the vehicle and all rear suspension components were already noted as rusty, suggesting an ongoing battle with age-related oxidation rather than isolated incidents. The recorded mileage of 89,113 miles over 26 years equates to roughly 3,427 miles annually, which is notably low for the vehicle's age and indicates either extended periods of low use, seasonal driving, or long intervals off the road. The test history supports the latter interpretation, with gaps between examinations of more than two years in places and several years passing between 2018 and 2020 without a recorded test. From a mechanical perspective, low annual mileage on a 26-year-old Mercedes of this era raises legitimate concern regarding the condition of rubber and polymer components that degrade with age rather than use, including ageing suspension bushes, perished flexible brake hoses, dried and cracked coolant and vacuum lines, and seals that may have hardened. The combination of low mileage and widespread corrosion advisories is a well-known paradox in older vehicles, where limited driving has not prevented moisture ingress and oxidation from progressing beneath the car, and the underfloor pipework and suspension components would have continued to deteriorate even during periods of inactivity. A prospective buyer should focus the physical inspection on the underbody, ideally with the vehicle raised, paying particular attention to the front-to-rear brake lines along the chassis rails for any remaining surface corrosion, flaking, or evidence of previous sleeving repairs. The rear subframe mounting points, spring perches, and all suspension arms and bushes should be examined for advanced corrosion and perishing rubber, knocking over uneven road surfaces would suggest worn bushes, and any free play detected in the rear hub assemblies when the wheel is rocked by hand would warrant further investigation. The brake discs, all of which have been flagged as pitted or scored across multiple tests, should be checked for lip formation, runout, and any pulsation through the brake pedal under firm application at speed, and the handbrake holding ability on an incline should be confirmed given the rear disc condition. The fuel lines, noted as poor in 2021, should be visually traced along their full length for cracking, staining, or corrosion, and the headlamp lenses flagged for product residue in 2020 should be inspected for any subsequent delamination or moisture ingress. Finally, given the extended gaps in testing, it would be prudent to verify the age and condition of the coolant, brake fluid, and drive belts directly, as these items would not be reflected in the MOT record and may be due for replacement purely on the basis of the vehicle's age.