2004 Mercedes-Benz CLK 3.2L Petrol · JH04 MAG

The most recent MOT history for this 2004 Mercedes-Benz CLK reveals a concerning instability in roadworthiness just prior to the current date. The vehicle failed its test on 20th March 2026 at 91,804 miles before narrowly passing three days later on the 27th of the same month. No defects were recorded on either occasion, which suggests the failure may have been procedural or related to a minor, easily rectifiable issue such as an expired test certificate or administrative oversight. The preceding tests in 2025 and 2024 were clean, indicating a stable pattern of compliance with MOT standards until the recent anomaly. However, the repeated testing at identical mileage—with no recorded faults—raises questions about whether underlying issues were overlooked or whether the vehicle was driven unsafely between tests. The recorded mileage of 91,804 miles over 22 years suggests unusually light usage, averaging just 4,173 miles annually. This low mileage could imply prolonged periods of inactivity, which may have allowed for the accumulation of corrosion or degradation in components not subjected to regular stress. Notably, there is a gap of approximately 11 months between the 2024 and 2025 tests, during which the vehicle accumulated only 185 miles. Such minimal movement could exacerbate issues like seized suspension joints or degraded wheel bearings, as these components remain static for extended periods. Conversely, the sudden failure in March 2026—without prior warning—contrasts sharply with the otherwise unremarkable history, warranting scrutiny of whether critical components were neglected during this period. Given the lack of recorded defects in prior tests, a buyer should prioritise an inspection of suspension integrity, particularly the condition of rear suspension bushes and coil springs, which are common failure points in high-mileage luxury vehicles. The repeated testing at identical mileage in March 2026 suggests the possibility of binding rear brakes or worn brake discs, which could have been missed during the initial failure. Structural corrosion, especially around wheel arches, sills, and the subframe, should be examined closely, given the vehicle’s age and the prolonged periods of low usage. Additionally, the exhaust system—particularly catalytic converters and oxygen sensors—should be inspected for leaks or damage, as these are frequent causes of emissions-related failures in older Mercedes models. Finally, the electrical system, including battery health and wiring integrity, should be tested, as intermittent faults could explain the procedural failure without mechanical defects.