2018 Mercedes-Benz A-Class 1.3L Petrol · WN68 VUB

The most recent DVSA examination on 2 January 2026 resulted in a Pass, although the tester recorded a minor defect for a defective windscreen wiper blade along with advisories noting that both rear tyres were worn close to the legal limit and on edge. A broader review of the MOT history reveals a generally stable maintenance pattern with two notable concerns. The 10 December 2025 test failed on a Major for an inoperative or malfunctioning Engine MIL (Malfunction Indicator Lamp), confirming that the onboard diagnostic system had detected an emissions or engine management fault at the time. Additionally, on the same date in 2022, the vehicle was failed on two Dangerous tyre defects, with exposed ply or cords on the nearside rear inner tyre and structural separation on the offside rear outer tyre. While subsequent tests have passed cleanly, the recurrence of edge wear on tyres across multiple years, together with brake wear advisories in 2022, suggests that the vehicle may be subject to consistent alignment, geometry, or load-carrying habits that accelerate specific component wear. With approximately 92,241 miles recorded over eight years, this A-Class is averaging around 11,530 miles per annum, which is broadly typical for a vehicle of its age and segment. There are no substantial unexplained gaps in the annual MOT record, which implies regular use rather than long periods of standing. This level of mileage on a modern Mercedes-Benz petrol or diesel powertrain is well within the expected service life of the engine and transmission, but it does place proportionate wear on consumables such as brake discs, pads, tyres, suspension bushes, and anti-roll bar linkages. The relatively steady accumulation of mileage also suggests that time-based degradation items, including brake fluid, coolant, and the 12V auxiliary battery, are likely due for renewal in line with manufacturer schedules rather than purely mileage-driven intervals. Regarding the recurring defects, the tyre edge wear pattern is the most significant mechanical concern and warrants close attention during any physical inspection. Edge wear on the same axle over consecutive tests typically points to incorrect tracking geometry, worn suspension components, or consistent corner loading, and a prospective buyer should request evidence of a four-wheel geometry check and inspection of the rear suspension bushes, spring seats, and damper condition. On a test drive, listen for clonking or knocking over uneven surfaces, particularly at low speeds, which can indicate degraded bushings or top mounts, and feel for any pulling or instability that may suggest geometry is again out of specification. The brake disc pitting advisory from 2022 should be followed up by checking current pad and disc condition, looking for any brake shudder under firm pedal pressure, and inspecting calipers for binding or uneven piston retraction that may have developed since. Given the 2025 MIL inoperative fault, it is essential to confirm that the warning lamp now functions correctly on ignition, that any diagnostic trouble codes have been resolved, and that supporting evidence of repair is available, as unresolved engine management issues can quickly develop into more serious emissions or drivetrain faults if neglected. Beyond the recorded advisories, a vehicle of this age and mileage should be assessed for items that the MOT does not necessarily cover in depth. Inspect all four tyres for sidewall cracking or perishing caused by age, regardless of tread depth, as Mercedes-specification low-profile tyres can degrade structurally before they wear out. Examine the exhaust system for corrosion at mounting points, the flexible joint, and the rear silencer, particularly given typical UK winter road conditions. Verify the date code on the 12V battery, as units beyond five years often exhibit reduced cranking performance, and ensure that the air conditioning system, which uses age-sensitive seals and refrigerant, continues to hold charge effectively. Finally, confirm a fully stamped service book with evidence of timely oil, brake fluid, and coolant changes in line with Mercedes-Benz intervals, and check the underside of the vehicle on a ramp for any oil or coolant seepage from the engine, transmission, or differential that may indicate ageing gaskets and seals approaching the end of their service life.