2014 Mercedes-Benz E 3.0L Diesel · WM14 MSX

The most recent MOT test on 6 March 2026 resulted in a pass, but it attracted five advisories, signalling that while the vehicle is currently roadworthy, several wear-related issues have accumulated that warrant close attention before purchase. The maintenance trend over the past three years shows a progressive decline rather than stability. Earlier tests in 2020 and 2021 were recorded as clean passes with no advisories, but from 2022 onwards the vehicle began to accumulate tyre wear advisories, brake-related advisories, and suspension component wear. The 2022 test also included a prior failure at the dangerous level for exposed tyre cords, sub-legal tread depth on all four tyres, and two fractured rear road wheels, which represents a serious safety concern that was evidently rectified prior to the subsequent pass. The advisory list at the most recent test covering corroded brake pipework, worn suspension arm pins or bushes on both front sides, corroded rear sub-frame, and a nearside front tyre worn close to the legal limit collectively indicates that the vehicle is entering a phase where multiple major mechanical systems are simultaneously approaching end-of-life service intervals. With recorded mileage of 99,494 miles over approximately 12 years, the vehicle averages roughly 8,291 miles per year, which is broadly typical for its age and suggests regular rather than occasional use. The MOT history shows a relatively continuous testing record without significant gaps, indicating the car has been in active service throughout its life, though the mileage accumulation between annual tests appears moderate and consistent. This level of usage is generally favourable from a corrosion and standing-still perspective, as regularly driven vehicles tend to suffer less from seized calipers, brake disc pitting from inactivity, and moisture accumulation in fluids. However, the mileage itself places the vehicle at a point where major drivetrain and chassis consumables, including suspension bushes, brake discs and pads, and flexible rubber components, will be due for replacement regardless of any specific advisory. The recurring brake-related advisories across the 2024 and 2025 tests, including thin front brake pads and worn, pitted or scored front brake discs, combined with the 2025 advisory for fluctuating front service brake performance, suggest that the braking system has been approaching a service threshold. On a test drive, the buyer should pay close attention to any brake pedal pulsation or shudder under firm application, which would indicate disc run-out or uneven pad transfer, as well as any pulling to one side that might suggest a binding caliper. The fluctuating brake note from 2025 should also be investigated by checking for uneven pad wear or a seized slider mechanism. Given the advisory for a corroded offside rear brake pipe covered in grease, the brake hydraulic system warrants a thorough visual inspection for further corrosion, as brake lines on a 12-year-old Mercedes are vulnerable to corrosion perforation, particularly in areas exposed to road salt, and replacement of steel brake pipes can be a costly undertaking. The suspension advisories from the 2026 test, specifically worn front suspension arm pins or bushes on both sides, combined with the advisory for rear sub-frame corrosion, are particularly significant for a prospective buyer. Worn front suspension bushes on a Mercedes E-Class typically manifest as clonking or knocking noises over speed humps, uneven tyre wear across the tread face, vague or imprecise steering response, and slight wandering at motorway speeds. The sub-frame corrosion advisory, whilst not serious enough to constitute a failure at this stage, should be physically inspected for any cracking, advanced scaling, or structural weakening, as corrosion in this area can spread aggressively and potentially compromise mounting points for the rear suspension arms. Additionally, the recurring tyre wear advisories, particularly edge wear on both front and rear tyres, are consistent with the suspension bush wear and may indicate alignment issues or worn drop links that should be rectified when the bushes are replaced. A four-wheel alignment check and inspection of all suspension components, including anti-roll bar drop links and control arms, would be prudent. Beyond the recorded advisories, a vehicle of this age and mileage should also have its 12V battery load-tested, automatic transmission fluid and filter assessed for service history, coolant system checked for age-related degradation, and all flexible rubber components including CV gaiters, coolant hoses, and air suspension reservoirs if fitted, examined for perishing or leaks.