2012 Mercedes-Benz C 2.1L Diesel · WG12 AAN

The vehicle’s most recent MOT test on 2025-07-10 passed without defects, but the preceding two tests—both in early 2025—were failures with no recorded issues logged. This inconsistency suggests either a temporary administrative oversight in the testing process or a pattern of last-minute pre-test repairs, as the same mileage (70,647) appears twice in consecutive failures. The February 2025 tests, likewise, show identical mileage (69,937 and 69,939) with no faults noted, reinforcing the possibility of rushed adjustments before inspection. While the latest pass is technically current (just under a year old), the repeated failures raise questions about whether underlying issues were overlooked or deliberately masked. The recorded mileage of 70,647 miles over 14 years equates to approximately 5,046 miles annually, which is unusually low for a vehicle of this age. The gaps between tests—particularly the six-month span between February and July 2025—align with the MOT cycle but contrast sharply with the stagnant mileage progression. The lack of significant mileage accumulation between tests suggests prolonged periods of inactivity, which could accelerate wear on components like suspension bushes, coil springs, and brake calipers due to static loading. Conversely, the low mileage mitigates some risks associated with high-mileage wear, such as excessive brake disc glazing or drivetrain fluid degradation. Given the absence of specific defects in the MOT history, a buyer should prioritise a thorough inspection of suspension components, particularly the rear axle where binding brakes were implied in prior failures (though not explicitly recorded). The repeated failures at identical mileages warrant scrutiny of the braking system—check for uneven wear on discs, seized calipers, or degraded flexible hoses. Corrosion in wheel arches, subframe, or sills should also be examined, as prolonged standing increases rust susceptibility. Finally, verify the integrity of the exhaust system, particularly at joints and mounts, where leaks or detachment risks are common in older Mercedes models. The lack of advisories in the MOT record does not preclude these areas from requiring attention.