2005 Mercedes CLS 5.0L Petrol · P4 BCU

The vehicle remains roadworthy as of its most recent MOT on 2025-11-27, but the maintenance trend is worsening. The nearside and offside front tyres were worn to the legal limit and showed edge cracking, indicating prolonged use without replacement despite low annual mileage. The rear exhaust mounting defect reappeared in 2024 and 2022, suggesting a persistent structural or fastening issue that has not been resolved. These recurring faults point to a pattern of deferred repairs rather than proactive maintenance. The mileage progression shows a steady climb from 78,817 miles in December 2022 to 81,551 miles in November 2025 — roughly 2,734 miles over three years, or about 911 miles per year. This is exceptionally low for a 21-year-old vehicle and implies the car has likely been stored or driven infrequently. While low mileage reduces wear on engine and drivetrain components, it increases the risk of rubber degradation, suspension bushing stiffening, and brake caliper binding due to inactivity. The 2023 failure for non-compliant number plates was a trivial administrative issue, not a mechanical defect, and does not reflect on the vehicle’s condition. A buyer should inspect the front tyres closely for uneven wear and cracking, as these were flagged as near-limit and damaged in the last test. The rear exhaust mounting defect, recorded in 2022 and 2024, warrants a full visual and structural check for rust, corrosion, or loose brackets — especially around the rear subframe and exhaust hanger points. Suspension components should be examined for worn bushes or coil spring fatigue, as low mileage often masks these issues until the vehicle is driven more frequently. Brake calipers and discs should be checked for binding or corrosion, as infrequent use can cause sticking mechanisms. The absence of defects in the 2023 test at 78,961 miles suggests the car was mechanically sound at that point, but the subsequent reoccurrence of exhaust and tyre issues indicates a decline in upkeep. The vehicle’s age and low mileage create a paradox: less mechanical wear but greater risk of component failure due to inactivity. Buyers should treat this as a project requiring immediate attention to tyres, exhaust, and suspension, and should not assume the car’s condition is stable simply because it passed recent tests.