2017 SEAT MII 1.0L Petrol · AJ64 AJS

A clean four-year MOT record with zero advisories or defects identifies this SEAT Mii as a mechanically well-screened example, with the latest test on 18 December 2025 returning a pass and no recorded defects. The only deviation from an unbroken pass history is a single failure dated 9 December 2022, where again no specific defects were recorded by the examiner, suggesting a straightforward rectification such as a rectification notice or category that did not constitute a mechanical defect under DVSA criteria. Since that isolated event, three consecutive annual tests have all passed without any advisories for tyre wear, brake condition, suspension components, corrosion, or exhaust emissions. This unbroken clean streak from 2023 through 2025 is the defining factor and indicates stable roadworthiness rather than an emerging pattern of component wear. With just under 23,000 miles accumulated over nine years, the annual mileage works out at roughly 2,500 miles per year, which is substantially below the typical usage rate for a vehicle of this age and points to either light private use or extended periods off the road. Low annual mileage of this magnitude generally preserves mechanical life expectancy of major components, but it also introduces specific concerns: brake discs and pads can suffer from low-speed corrosion pitting on the friction surface even when pad material remains thick, and undertray or suspension components can accumulate surface oxidation from infrequent wet-use cycles. The MOT record does not show any mileage gaps or testing absences across the five recorded tests, which suggests consistent although minimal use rather than long-term storage, so battery degradation and dry-rot issues associated with multi-year lay-ups are less likely to be a concern here. For a prospective buyer inspecting this Mii in person, the absence of any flagged components in the MOT history means a pre-purchase inspection should focus on general condition rather than chasing specific known defects. Pay particular attention to the brake discs on a test drive, as low-mileage vehicles frequently develop a lip of corrosion at the disc edge that can cause a detectable vibration through the brake pedal under firm application. Listen for any clonks or knocks from the front suspension over speed humps or uneven tarmac, since worn anti-roll bar drop links and strut top mount bearings are common on Mii-class cars but would only surface as an advisory once play becomes significant. Check that the steering remains centred and that the vehicle tracks straight without drift on a dual-carriageway run, as the Mii's lightweight rear axle geometry can mask tracking issues that have not yet worn tyres unevenly enough for an MOT advisory. During a road test, evaluate the cold-start behaviour and idle quality, since a small three-cylinder engine with this level of use can suffer from oil seal drying and minor vacuum leaks that present as a rough tick-over for the first few seconds. Confirm that the clutch take-up is consistent and that there is no slipping under load in fourth or fifth gear, as low-mileage clutches can glaze from infrequent use. Inspect the exhaust system visually for any blue staining around the rear silencer joints suggesting oil migration, and verify that the tyre sidewalls are free from cracking, as low annual mileage combined with the car's age can produce sidewall deterioration even when the tread depth remains within legal limits. Finally, request evidence of recent cambelt or timing chain service intervals, as this information will not appear in the MOT file but is the most consequential mechanical question remaining for a nine-year-old SEAT Mii at this mileage.