2016 Mercedes-Benz A-Class 2.1L Diesel · AR06 MOL

A consistent pattern of brake-related wear advisories and a single dangerous brake failure define the roadworthiness record of this 2016 Mercedes-Benz A-Class across its seven recorded MOT tests. The earliest advisory appeared on the 2022 test, noting rear brake pads wearing thin, followed by a 2023 advisory flagging front brake disc pitting and scoring alongside an inner nearside front tyre worn close to the legal limit on the edge. The 2024 test sequence is particularly significant: an initial failure on 16 April categorised the front inner brake pads as dangerously thin at less than 1.5 mm, with the disc wear previously noted now carried forward as an advisory, and the retest just two days later on 18 April recorded a clean pass. The 2025 and 2026 tests passed with no defects recorded, indicating that the brake intervention was effective, though the chronic nature of the front brake wear advisories across two consecutive years before the pad replacement suggests this is an area that warrants ongoing monitoring rather than a one-off concern. Additionally, a minor defect recorded in 2023 noted the offside rear passenger door catch had deteriorated to the point the door could not be readily opened or closed, which should be verified as fully rectified. With 98,898 miles recorded over a ten-year lifespan, this A-Class averages around 9,890 miles annually, a rate broadly consistent with typical usage for its age. The annual test entries from 2020 through 2026 show regular presenting mileage without any extended gaps in testing, suggesting the vehicle has remained in continuous use rather than experiencing multi-year periods off the road that might mask corrosion development or standing-start component degradation. The mileage progression between tests appears steady rather than exhibiting any unusual spikes, which means wear on major mechanical items such as suspension components, drivetrain mounts, and exhaust system fittings is likely to have accumulated proportionally to the distance covered rather than being concentrated into short intensive periods. At this mileage point in a petrol or diesel A-Class of this generation, the mechanical focus should shift toward mid-life consumable replacement and the early signs of higher-mileage component fatigue. For a prospective buyer, the brake history is the primary area requiring physical inspection and test drive verification. The disc pitting and scoring flagged in 2023 advisories would typically necessitate disc replacement if pads were renewed, so it is worth confirming whether the front discs were actually changed at the same time as the dangerous pad failure in 2024, or whether only the pads were replaced leaving the previously scored discs in situ. On a test drive, listen for any grinding or scraping noise from the front wheels under light braking, feel for vibration or pulsation through the steering wheel or brake pedal which would indicate disc run-out or uneven wear, and check for the vehicle pulling to one side under steady braking which suggests a binding caliper. Inspect the visible face and edge of the front discs through the wheel for a pronounced lip on the outer rim and any visible scoring, rust pitting, or blueing from overheating, as the advisory wording specifically referenced pitting which can recur if the discs were reused. The remaining advisory items also need practical verification. The nearside front inner tyre worn on the edge in 2023 could indicate a tracking or suspension geometry issue, particularly worn wishbone bushes or a deteriorated track rod end, so on the test drive pay attention to steering pull to one side, uneven steering effort, or a knocking sound from the front suspension when traversing speed bumps or uneven road surfaces. The offside rear passenger door catch should be physically operated several times to confirm it latches securely and releases cleanly without excessive play, as deteriorated door catch mechanisms on this model can worsen progressively. Beyond the recorded items, a ten-year-old A-Class with nearly 99,000 miles should be inspected for oil seepage around the engine and transmission sumps, condition of the auxiliary drive belt and tensioner, state of the coolant hoses and expansion tank for any signs of plastic degradation, and evidence of corrosion on the underbody components and suspension arms, none of which formed part of the MOT record but are entirely consistent with the age and mileage presented.