2020 MINI John Cooper Works GP Auto 2.0L Petrol · AV20 WOB

The 2020 MINI John Cooper Works GP Auto currently holds a valid MOT certificate issued on 4 March 2026 at 21,874 miles, following a failure just two days prior on 2 March 2026 at 21,771 miles. That initial failure flagged an exhaust Lambda reading outside specified limits during the second fast idle test, indicating a combustion or emissions control anomaly likely tied to the catalytic converter or oxygen sensors. The swift pass suggests the issue was rectified, but the root cause remains unverified without further diagnostics. The overall maintenance trend is broadly stable, though the recent emissions failure introduces a minor note of concern regarding engine management health. Mileage accumulation is notably low for a six-year-old performance hatchback, averaging roughly 3,646 miles per year. Between the June 2023 test at 6,628 miles and the February 2025 test at 12,803 miles, the car covered approximately 6,175 miles over roughly twenty months, a modest increase consistent with light use. The gap between February 2025 and March 2026 shows around 9,071 miles added in just over thirteen months, representing a noticeable uptick in usage. This pattern suggests the vehicle may have spent extended periods stationary before recent months, which can contribute to flat-spotted tyres, brake surface corrosion, and dried seals. The February 2025 test flagged both nearside and offside rear inner tyres worn close to the legal limit and worn on edge, a condition typically associated with misaligned rear suspension geometry or worn suspension bushes rather than simple neglect. On a performance model with aggressive camber settings, inner edge wear is a known characteristic, but both rears degrading simultaneously warrants a close inspection of rear toe and camber settings, trailing arm bushes, and damper condition. A buyer should verify whether the tyres were replaced after the advisory and whether any alignment work was carried out. Beyond tyres, the March 2026 windscreen advisory for damage not affecting the driver's view should be examined in person to confirm the chip has not spread, particularly given the thermal stresses a hot-hatch windscreen endures. The Lambda failure, though resolved, justifies requesting a live-data emissions scan to confirm catalytic converter efficiency and sensor response under load. Brake condition, exhaust system integrity, and the general state of rubber bushes and seals deserve attention given the car's low-mileage, potentially stationary history. A pre-purchase inspection by a specialist familiar with the GP platform is strongly recommended.