2012 MINI 1.6L Petrol · T77 RAA

A recurring pattern of chassis and underbody corrosion advisories dominates the MOT history of this 2012 MINI, with the most recent test on 12 May 2026 passing but flagging a corroded rear sub-frame, corroded front coil springs on both sides, slight ferrule corrosion on both rear brake hoses, worn rear brake discs, and a minor exhaust gas leak from the flexible pipe. These advisories are not isolated; the rear sub-frame corrosion has now appeared at consecutive tests in 2025 and 2026, and the front coil spring corrosion, first noted in 2025 on the offside, has progressed to both sides within a twelve-month interval. Earlier tests recorded an oil leak from 2023 onwards and surface rust to the rear underbody in 2023, establishing a trend of progressive underfloor and structural component deterioration rather than isolated wear. No advisory or failure has ever been recorded against the front brake discs, but their appearance in 2025 and the rear disc wear noted in 2026 suggest brake component degradation is now spreading across the axle set. The exhaust flexy pipe leak is a new entry in 2026 and warrants particular attention, as flexible sections are prone to splitting once corrosion sets in. The recorded mileage of 59,790 miles across fourteen years equates to an average of around 4,270 miles per year, which is substantially below typical annual mileage for a vehicle of this age. MOT tests have been conducted annually from 2022 through to 2026 without any recorded gap in testing, indicating the vehicle has remained on the road throughout, and the mileage progression between tests is consistent with light, regular use rather than extended periods of standing. Lower annual mileage such as this generally places less demand on wear items like clutches, drivetrain mounts, and internal engine components, but it does not protect the underbody, brake ferrous components, or rubber and polymer items from age-related deterioration. The advisories recorded align with that expectation, with corrosion and perishing of components occurring at a faster rate than would be expected from mileage alone, a common characteristic of vehicles used primarily for short urban journeys where moisture and salt exposure do not have the benefit of extended running to dry components out. For a prospective buyer, the rear sub-frame corrosion flagged in both 2025 and 2026 is the most significant area to inspect in person, as although the tester judged it not seriously weakened at the last examination, progression from one year to the next should be visually verified by placing the vehicle on a ramp and checking for any flaking, pitting, or loss of metal thickness around mounting points, mounting brackets, and adjacent suspension pickup locations. The front coil spring corrosion noted on both sides in 2026 should be examined visually for surface pitting and any cracking at the coil ends, and the buyer should listen for clonks or knocking from the front suspension when traversing speed bumps or uneven surfaces, as corroded springs can fracture. The rear brake hose ferrules should be checked for any advanced corrosion that could compromise hose integrity, and the brake pedal should be tested for a firm, consistent feel without sponginess or excessive travel on the test drive. The worn rear brake discs warrant a check for any pulsing or judder through the brake pedal under firm application, and the discs themselves should be inspected for a distinct lip on the outer edge or scoring across the friction surface. The minor exhaust leak from the flexible pipe recorded in 2026 is likely to manifest as a faint hissing or ticking noise from beneath the centre of the vehicle on start-up, becoming more pronounced when the engine is cold, and a physical inspection beneath the car should confirm any splitting, blistering, or white oxidation marks on the bellows section of the flexi joint. The oil leak noted as not excessive since 2023 should be traced to its source, commonly the valve cover gasket or oil filter housing on these engines, and the buyer should look for fresh oil residue on the underbody and any oily smell when the engine is warm. Tyre cracking and perishing flagged across multiple tests from 2023 to 2025 indicates age-hardened rubber compounds, and all four tyres should be examined for sidewall cracking, particularly on the rear axle. Given the corrosion trajectory across the underbody, a pre-purchase inspection on a ramp is strongly advised to confirm that the rear sub-frame has not deteriorated beyond advisory limits since the May 2026 test, as corrosion of this nature can advance between annual examinations.