2007 Mercedes-Benz CLK 3.0L Petrol · PE07 RWN

The latest MOT test on 4 November 2024 resulted in a failure, most notably featuring a dangerous defect regarding a leaking offside brake pipe. When reviewing the overall history, the maintenance trend is clearly worsening. While the vehicle enjoyed clean passes between 2018 and 2020, the subsequent years show a steady increase in both major failures and advisories. The progression of brake pipe corrosion from a minor advisory in 2020 to a dangerous failure in 2024, combined with recurring issues with the engine management light, suggests a reactive approach to maintenance rather than a preventative one. With 136,807 recorded miles over 19 years, the vehicle has averaged approximately 7,200 miles per year. This is a typical usage profile for a luxury coupe of this vintage, meaning it has likely avoided the extreme wear of high-mileage commuting as well as the perishing of seals and gaskets associated with long periods of standing. However, at this mileage and age, rubber components, suspension bushings, and drivetrain mounts are typically reaching the end of their natural service life, which is evidenced by the recent failure of the anti-roll bar linkages and bushes. The prospective buyer must prioritize the inspection of the braking system and chassis integrity. The history of brake pipe corrosion is a significant concern; you should carefully inspect the underside for further rust and verify that the leaking pipes were fully replaced rather than temporarily patched. During a test drive, listen for knocking or clunking sounds from the front suspension, which would indicate that the anti-roll bar components are still worn or have been inadequately repaired. Furthermore, the repeated failures regarding the engine management light indicate a persistent electronic or sensor malfunction; ensure the light is currently extinguished and a diagnostic scan is performed to confirm no stored fault codes remain. Additional attention should be paid to the suspension components, as previous advisories highlighted corrosion on both the front and rear elements. Check for structural integrity around the suspension mounting points to ensure the corrosion has not progressed to a structural failure. Given the previous notes on worn brake discs and tyres, verify the current tread depth and check for uneven wear patterns that could suggest wheel misalignment. Finally, a thorough review of the service book is essential to confirm that calendar-based maintenance, such as transmission fluid changes and coolant flushes, has been performed to protect the engine and gearbox from age-related degradation.