2004 Mercedes SLK 3.2L Petrol · RN04 AAX

The most recent MOT inspection on 17 April 2026 resulted in a pass with no recorded defects, suggesting that the immediate mechanical issues identified in previous years have been addressed. Looking at the broader maintenance trend, the vehicle has experienced a period of instability between 2023 and 2025, characterized by failures regarding lighting and significant advisories concerning steering and tyre integrity. However, the transition from multiple major defects and dangerous failures in 2023 to a clean pass in 2026 indicates an improving maintenance trajectory, provided the recent repairs were comprehensive and not merely superficial fixes to pass the test. With a recorded mileage of 74,791 over approximately 22 years, this Mercedes SLK has averaged a very low annual usage of roughly 3,400 miles. While low mileage often suggests less mechanical wear on the engine and drivetrain, such infrequent use can be equally detrimental to a vehicle of this age. Long periods of standing can lead to the degradation of rubber components, the drying out of seals, and the accumulation of moisture in fluids. The history of tyre perishing and steering rack play is consistent with a vehicle that may spend significant time stationary or is driven on short, infrequent trips, which prevents the vehicle from reaching optimal operating temperatures and may lead to uneven component wear. Prospective buyers must pay close attention to the steering and suspension systems during a test drive. The 2023 advisory regarding play in the steering rack inner joints and the offside front wheel bearing suggests that the steering precision may be compromised. Listen for any knocking, clunking, or vague sensations through the steering wheel, especially when navigating uneven surfaces or turning at low speeds. Furthermore, while the 2025 advisory for thin rear brake pads was not repeated in 2026, you should still inspect the rear braking system for any signs of binding calipers or uneven pad wear, and listen for any squealing or grinding noises during braking which could indicate that the pads are nearing the end of their service life. Given the low annual mileage, a thorough physical inspection of rubber and fluid health is essential. Check the sidewalls of all tyres for signs of perishing, cracking, or age-related degradation, as tyres can become unsafe due to age even if they possess significant tread depth. Inspect the underside of the vehicle for signs of corrosion or fluid leaks from the engine, gearbox, or suspension components, which can occur when seals dry out from inactivity. It is also advisable to verify the service history to ensure that time-based maintenance, such as oil changes, coolant flushes, and brake fluid replacements, has been conducted according to the manufacturer's schedule rather than solely based on mileage intervals.