2014 Mercedes-Benz SLK 2.1L Diesel · SL64 DUG

The most recent MOT inspection on 17 April 2026 resulted in a pass with no recorded defects. This follows a minor failure the previous day regarding headlamp aim and reduced rear fog lamp intensity, both of which appear to have been rectified immediately. Looking at the broader history since 2019, the maintenance trend remains remarkably stable, with the vehicle consistently passing without any recorded structural, suspension, or braking failures. This suggests a consistent level of care, although the recent lighting failure highlights the importance of ensuring all electrical and adjustment components are fully functional. With a recorded mileage of 50,166 over approximately twelve years, this vehicle has averaged roughly 4,180 miles per year. This is significantly lower than the UK average and indicates very light usage. While low mileage generally implies less mechanical wear on the engine, transmission, and drivetrain, it also carries the risk of age-related degradation caused by long periods of inactivity. Vehicles that sit idle for extended periods are prone to moisture accumulation in fluids and the hardening of rubber-based components, which can be just as detrimental as high-mileage wear. Because the MOT history is clean of mechanical defects, your inspection should focus on age-related items rather than wear-and-tear. Closely examine the tyres for sidewall cracking or perishing, as rubber degrades over time regardless of how many miles have been driven. Check the brake discs for heavy surface corrosion or pitting and ensure the calipers are not binding, which is a common symptom of infrequent use. You should also verify the service book to confirm that time-based maintenance, such as annual oil changes and coolant replacements, has been carried out to prevent fluid degradation. During the test drive, pay particular attention to the suspension by listening for any clunks or knocks that might indicate perished bushes or worn coil springs. Given the SLK is a hardtop convertible, the roof mechanism must be operated multiple times to ensure smooth, consistent movement without hesitation or unusual mechanical noise. Additionally, check the health of the 12V battery and inspect the underside for any signs of standing corrosion or fluid leaks that may have developed due to the vehicle being stored for long periods.