2012 Mercedes-Benz E 2.1L Diesel · BK62 AAF

A recurring pattern of brake disc wear and tyre deterioration defines the mechanical history of this 2012 Mercedes-Benz E-Class, with the front braking system standing out as the most persistent concern. Across multiple test cycles the nearside and offside front brake discs have been flagged as worn, pitted, or scored, culminating in a Major failure on 2020-11-11 when both front discs were recorded as significantly and obviously worn. Although the vehicle subsequently passed its 2020 retest the following day, and subsequent tests in 2021, 2022, 2023, 2024, and 2025 have all returned pass results, the braking issue has continued to surface indirectly. The 2025-11-10 test noted the nearside rear brake disc as worn, pitted, or scored, while the 2024-11-11 test identified a deteriorated ball joint dust cover on the offside front lower suspension arm as a Minor defect. The overall trajectory suggests that the underlying wear on the front discs has either been rectified or reached a stable state where the components remain within legal limits but are not in prime condition, meaning any prospective buyer should anticipate imminent replacement of brake discs and pads. With 49,626 miles recorded over approximately 14 years, this vehicle has covered roughly 3,545 miles annually, which is considerably below the typical mileage for a car of this age. The MOT history is continuous from 2019 onwards with no testing gaps, indicating the vehicle has remained in regular use rather than being laid up, although the low annual mileage suggests light usage that may itself contribute to component degradation. Brake discs can corrode and pit prematurely on vehicles that see only short journeys, as the brakes rarely reach sufficient operating temperature to dry off surface moisture. Tyre perishing, as flagged repeatedly on the nearside and offside front tyres across 2020, 2021, and 2023, is also consistent with a vehicle that stands for extended periods between drives, allowing the rubber to degrade through environmental exposure rather than wear from use. The specific advisories recorded warrant targeted inspection before purchase. The 2024 Minor defect relating to the offside front lower suspension arm ball joint dust cover indicates that moisture and dirt ingress have begun to compromise the joint's sealing, which can accelerate wear of the ball joint itself. On a test drive, listen for any clonking or knocking from the front suspension when traversing speed bumps or potholes, and pay particular attention to any vagueness or rattling through the steering wheel that might indicate the joint has deteriorated beyond what the MOT inspector observed. The front brake discs previously failed on wear grounds, so on test drive the buyer should feel for any judder through the brake pedal or steering wheel under firm deceleration, which would indicate disc run-out or uneven wear, and listen for any grinding or scraping sounds that suggest pad material has worn to the metal backing plate. The persistent tyre advisories across consecutive tests deserve careful attention, particularly the cracking and perishing flagged on inner and outer sidewalls. On inspection, examine the sidewalls closely for any visible cracks, especially in the flexing zones near the shoulder, and check the tread depth across the full width to confirm even wear rather than the edge wear noted on the 2023 offside rear advisory. The nearside front road wheel was also noted as slightly distorted on the 2020 tests, which can cause vibration at speed; test the vehicle at motorway speeds to detect any steering wheel oscillation or brake pedal pulsation. Given the continuous pattern of brake disc and tyre advisories over several test cycles, budgeting for a comprehensive brake overhaul including new front discs, pads, and a full set of tyres should be considered essential rather than optional for the new owner.