2015 MINI Cooper S 1.6L Petrol · AF59 ARG

This MINI Cooper S shows a concerning pattern of MOT instability, with two failures in the last 12 months despite no recorded defects on either occasion. The most recent test, conducted on 2025-06-11 at 85,967 miles, passed without issues, but the preceding failure on 2025-06-06—just five days earlier—raises suspicion of either a temporary MOT tester error or a recurring, undocumented mechanical issue. The 2023 failure at 58,304 miles, similarly without defects logged, suggests a persistent problem that evaded official detection, possibly involving subtle faults like intermittent brake binding, suspension wear, or minor emissions irregularities. The lack of advisories or defect codes in any test further complicates diagnosis, but the repeated failures imply either a lack of pre-MOT servicing or a vehicle prone to marginal faults that slip through standard checks. The mileage progression of 7,815 miles per year aligns with typical usage for its age, though the abrupt jump from 58,304 miles in May 2023 to 72,051 miles by June 2024—an increase of 13,747 miles in under a year—indicates a period of heavier use. This could accelerate wear on high-mileage components like suspension bushes, coil springs, and brake calipers. The 18-month gap between the 2024 and 2025 tests, combined with the identical mileage at both failures, suggests the vehicle may have sat unused during that period, allowing corrosion to develop on underbody or wheel components. Buyers should note that prolonged inactivity can exacerbate rust in wheel arches, sills, and subframes, particularly in the UK’s chloride-laden environment. Given the history, a thorough inspection should prioritise the suspension system—rear bushes and coil springs are common failure points on this model—and the braking system, where binding calipers or worn pads could explain the unexplained failures. The absence of defect codes does not rule out recurring issues; testers may have overlooked subtle faults such as uneven tyre wear (indicating alignment drift) or minor exhaust leaks contributing to emissions failures. Structural integrity should also be scrutinised, especially around the wheel arches and sills, where corrosion could compromise safety. The buyer would be wise to request evidence of recent servicing, including brake fluid changes, suspension inspections, and underbody corrosion treatment, to confirm whether the failures were coincidental or symptomatic of deeper neglect.