2014 Mercedes-Benz E 2.1L Diesel · N7 OAA

The defining mechanical feature in this E-Class's recent MOT history is a recurring issue with the offside front anti-roll bar ball joint dust cover, which has now escalated from an advisory in March 2025 to a major failure at the most recent test on 30 March 2026, even though the vehicle was also recorded as passing on the same date. A second recorded defect from that 2026 visit is a nearside and offside front headlamp aim being too low in March 2025, both classified as dangerous and resulting in the failure of that test, although the 2024 pass was entirely free of advisories. This means the vehicle has shown a pattern of minor advisories compounding into major defects within a relatively short window, rather than a uniformly clean record, and any buyer should be alert to the fact that the anti-roll bar component flagged has now breached MOT standards rather than merely being worn. Annual mileage is broadly consistent with the vehicle's age. With 88,144 miles recorded over twelve years, the car is averaging roughly 7,345 miles per year, which is a moderate rate of accumulation rather than an indicator of either heavy motorway use or extended periods of standing. The MOT record is also reasonably continuous, with tests recorded in 2024, 2025, and 2026, suggesting the vehicle has been in regular use and has not been laid up for any significant interval. This kind of steady usage generally means that consumables such as brake pads, discs, tyres, and suspension bushes will have worn at a predictable rate rather than suffering from age-related degradation while stationary, but it also means that mechanical components have been subjected to continuous service over many tens of thousands of miles. Given the anti-roll bar dust cover failure, particular attention should be paid to the front suspension geometry and steering response. The dust cover itself is a small flexible boot designed to keep dirt and moisture out of the ball joint; once it is no longer preventing ingress, the joint is exposed to contamination, which accelerates wear in the metal-on-metal articulation. On a test drive, listen for any knocking, clunking, or rattling from the front end when traversing speed bumps or potholes, and feel for vagueness or play through the steering, particularly during direction changes or when braking on uneven surfaces. The ball joint itself should be inspected for any grease leaking from the perished cover, and the anti-roll bar drop links and bushes warrant close examination as these tend to deteriorate alongside the joint. Any evidence of uneven tyre wear on the inside or outside shoulders of the front tyres would further suggest that the suspension geometry has been compromised. The 2025 headlamp aim failure should not be treated as a one-off curiosity, as both headlamps were recorded as projecting too low on that occasion. On inspection, the buyer should verify that the headlamp alignment is currently within specification, particularly if the car has been subjected to suspension work or kerb impacts. In addition to the items flagged on the MOT record, given the vehicle's age and mileage, a thorough check of the front brake discs and pads is advisable, along with the rear brake components, the condition of the coil springs for any cracking or broken ends, and a general inspection underneath for any oil leaks from the engine or transmission. A hoist inspection would be the most reliable way to confirm the current state of the anti-roll bar joint and its associated hardware before committing to purchase.