2004 Mercedes-Benz C 2.1L Diesel · WV04 DOJ

The most recent MOT test on March 4, 2025, confirms the vehicle failed without any recorded defects, a pattern that has persisted since January 2024. This suggests the car has not been subject to the standard MOT defect reporting system, which could imply either a lack of genuine testing or that issues were resolved privately before inspection. The absence of advisories or defects across all tests—even when the vehicle failed—raises suspicion that critical components may have been overlooked or repaired without proper documentation. The trend is neither improving nor worsening in a conventional sense, but the repeated failures without explanation demand scrutiny of whether the vehicle has been maintained according to manufacturer or legal standards. The recorded mileage of 138,940 miles over 22 years aligns closely with an average of around 6,300 miles annually, a rate that, while typical for a vehicle of this age, does not account for potential periods of inactivity or irregular use. Notably, the gap between the January 2024 and March 2025 tests—covering just 9,214 miles—suggests either limited driving or a deliberate delay in testing. The rapid accumulation of mileage between January 2023 (119,073 miles) and February 2024 (129,726 miles) indicates a significant increase in usage, which could accelerate wear on suspension bushes, coil springs, and drivetrain components. The lack of advisories during these periods does not guarantee these areas have been inspected, however. Given the repeated failures without defect records, a buyer should prioritise a thorough inspection of the suspension system, particularly the rear axle where binding calipers or worn bushes are common failure points in this model. The brakes, while not explicitly flagged, should be examined for uneven wear, corrosion on caliper slides, or binding rotors, as these are frequently linked to MOT failures. Structural integrity, especially around the subframe and sills, warrants attention, as corrosion in this area can compromise roadworthiness without visible external signs. Additionally, the exhaust system should be checked for leaks or excessive rust, particularly around the catalytic converter, which often fails silently before emission tests. The absence of advisories does not preclude underlying issues, so a pre-purchase inspection by a qualified Mercedes-Benz specialist is strongly advised.