2009 Mercedes-Benz CL 500 5.0L Petrol · AIB 1007

The vehicle passed its most recent MOT on 5 June 2026, but the overall maintenance trend is concerning and suggests a reactive rather than proactive approach to upkeep. There is a recurring pattern of corrosion and wear that has been flagged across multiple years without permanent resolution, particularly regarding the braking system and suspension components. The transition from major failures to persistent advisories indicates that while the car meets the minimum legal standard for roadworthiness, it is suffering from chronic neglect of preventative maintenance. With a recorded mileage of 85,064 miles over seventeen years, the vehicle has averaged approximately 5,004 miles per year. This is significantly lower than the national average for a grand tourer of this specification. While low mileage generally reduces drivetrain wear, in this specific instance, it appears to have contributed to the degradation of rubber components and the onset of corrosion. Low-usage vehicles often suffer from moisture retention and a lack of heat cycling, which can lead to the pitting of brake discs and the perishing of suspension bushings and dust covers as seen in the records. A prospective buyer must pay close attention to the braking system, as the persistent advisories regarding corroded brake pipes are a significant red flag. You should inspect the lines for excessive scaling or signs of previous attempts to mask corrosion with grease. During a test drive, listen for any unusual noises from the suspension and feel for vague steering or clunks over bumps, which would indicate that the deteriorated ball joint dust covers have allowed contaminants to destroy the joints. The history of dangerous tyre failures, including structural bulges and exposed cords, suggests a lack of attention to tyre age and condition; therefore, check all sidewalls for perishing or cracking, regardless of the remaining tread depth. Given the vehicle's age and low annual usage, several other time-based degradation points require verification. Check the service history for evidence of calendar-based fluid changes, as engine oil and coolant degrade over time regardless of mileage. Inspect the brake calipers for binding and the discs for heavy surface corrosion, which is common in cars that stand for long periods. Finally, test the health of the 12V battery and the air suspension system, as the rubber bellows and compressors on these models are prone to failure when not exercised regularly.