2020 MG ZS Exclusive T-GDI Auto 1.0L Petrol · YY70 AEL

A pattern of tyre degradation is the most consistent mechanical theme across this MG ZS's MOT record, with cracking or perishing advisories appearing on both front and rear tyres at every test from September 2024 through August 2026, including the most recent assessment on 25 August 2026 which the vehicle failed outright. That failure was driven by an emissions exceedance rather than the tyres themselves, with the tester recording a Major defect for exhaust carbon monoxide content after the second fast idle exceeding the manufacturer's specified limits. The broader record shows three tests in 2024 and 2025 produced failures or pass-related advisories for headlamp aim, wiper effectiveness, and continuing tyre condition, while only the September 2023 test returned a completely clean result. Taken together, the trajectory is one of accumulating minor issues culminating in a drivability and emissions failure on the most recent attempt, and any prospective buyer should not treat the underlying pattern as resolved simply because the car may subsequently have been repaired and retested. The recorded mileage of 30,041 miles across approximately six years equates to an annual accumulation of around 5,007 miles, which sits well below the typical figure for a privately used petrol SUV of this age. This kind of low usage can reflect genuine light running, but it also carries mechanical implications worth weighing: brake discs and pads can suffer from surface corrosion and uneven wear through infrequent use, suspension bushes and dampers can develop flat spots or stiffness from extended standing periods, and the catalytic converter and lambda sensors can deteriorate when the engine is not regularly brought up to full operating temperature. There are no significant gaps between test dates in the supplied history, with annual MOTs recorded from 2023 onwards, suggesting the vehicle has remained in regular use rather than being laid up for multi-year stretches. The relatively short annual distances combined with continued annual testing indicate a car that is being driven consistently but gently, which is broadly positive for long-term mechanical integrity but means components prone to low-use degradation deserve particular scrutiny. Focusing on the components actually flagged in the record, the most pressing area for inspection is the exhaust and emissions system. The carbon monoxide exceedance recorded on the most recent test should prompt a physical examination of the catalytic converter for internal failure, inspection of the lambda sensors for age-related degradation, and a check for any exhaust gas leaks upstream of the lambda probe, all of which can present as elevated CO readings on a tailpipe test. On a road test, listen for any rattling from the catalyst under hard acceleration and watch for an uneven idle or hesitation under load, both of which can accompany failing catalytic substrates or tired oxygen sensors. The headlamp aim issue from September 2024, which was classed as a PRS, points to misalignment of the front lighting pods; this is often adjustable via the rear access panel on the headlamp unit and worth verifying manually rather than relying on the dashboard or a wall chart, as the symptom would present as poor close-range illumination with dazzle to oncoming traffic. The recurring tyre advisories across all four recorded test dates warrant close attention because they suggest either prolonged standing under UV exposure or a consistent source of sidewall degradation such as incorrect inflation, kerbing damage, or simply age-related rubber perishing. With the vehicle being six years old, the original factory-fit rubber has long since been replaced, but the pattern implies that whatever compounds are being fitted are not lasting well, and a prospective buyer should inspect the current tyres for sidewall cracking, tread depth with a calibrated gauge, and manufacturing date stamps while also confirming that all four tyres are of the same brand, size, and speed rating as recommended on the B-pillar placard. The wiper failure from September 2025 is a relatively minor mechanical item but indicates that wiper linkage wear, motor fatigue, or a simple missed service item can occur, so both the front and rear wiper mechanisms should be operated through their full arc during a viewing. Finally, given the low annual mileage, the brake system should be examined with particular care for corroded discs and seized caliper sliders, the underbody should be inspected for surface corrosion on suspension arms and subframe mounting points, and the coolant and brake fluid should ideally have their age and condition verified, as these items do not benefit from low annual mileage and require time-based replacement regardless of distance covered.