2012 Mercedes-Benz C 2.1L Diesel · YA12 AAN

The most recent MOT, carried out on 13 April 2024, was passed with no recorded defects, indicating that the vehicle met the statutory safety and emissions requirements at that time. Over the last six years the MOT record shows a mixed pattern: a cluster of serious failures in early 2018 and 2019 (tyre tread, brake pad thickness, brake‑hydraulic reservoir cap, and rear brake binding) was followed by a period of passing tests with only advisory notes, and the latest test shows a clean bill of health. This trajectory suggests that the major issues identified previously have been addressed and that the vehicle’s maintenance condition has been stabilising and, at present, appears to be improving. At 134,140 mi the car has averaged roughly 9,600 mi per annum since its 2012 registration, which is consistent with typical UK usage for a mid‑size executive saloon. The mileage does not indicate any periods of extreme high‑speed running or unusually low utilisation that might mask hidden wear, but the relatively modest annual distance does mean that components such as the suspension bushings, engine mounts and drivetrain bearings may have been subject to less cumulative fatigue than on a high‑mileage counterpart. Nevertheless, the age of the vehicle means that time‑related degradation—rubber hardening, corrosion and fluid breakdown—must be considered alongside the mileage. When you inspect the car, give particular attention to the front lower suspension ball joint on the nearside, which was flagged in 2021 for slight play and previously recorded as excessively worn on the off‑side. Check for any clunking or looseness when the steering wheel is rocked at a standstill and when negotiating bumps; excessive play can lead to uneven tyre wear and compromised handling. The rear brake system has a history of binding and severely worn pads; verify that the handbrake releases cleanly, that the rear discs are free from rust‑induced sticking, and that the pad thickness is comfortably above the 1.5 mm minimum. During a test drive listen for any shudder or pulsation on firm braking, which would indicate warped discs or uneven pad wear, and watch for the ABS warning lamp to illuminate, as an ABS fault was recorded in 2021. Also confirm that both low‑beam and high‑beam headlamps illuminate correctly, as headlamp failures were previously noted. Given the vehicle’s age, inspect the condition of the tyre sidewalls for cracking or dry‑rot, even if the tread depth now meets legal limits, because ageing rubber can fail suddenly. Examine the front brake pipe for corrosion, the exhaust centre clamp for deterioration, and the brake‑hydraulic reservoir cap to ensure it is present and sealing properly. A visual check of the battery terminals for corrosion and a load test of the 12 V battery are advisable, as long‑standing idle periods can reduce battery capacity. Finally, confirm that the service book shows regular oil and filter changes, coolant flushes and timing‑chain or belt maintenance at the intervals recommended by Mercedes‑Benz, as these time‑based services are critical for a 14‑year‑old engine’s reliability.