2005 MG ZR 1.8L Petrol · RV05 SZX

The 2005 MG ZR presents a stable but chronically neglected maintenance profile, culminating in a pass at its most recent test on 1 December 2025 at 69,521 miles. The vehicle has never failed an MOT, yet the record reveals a persistent pattern of advisory items that have been carried forward year after year rather than rectified. The trend is not worsening in a dramatic sense, but it is certainly not improving. The tester flagged rear inner brake pads wearing thin in the latest test, a new addition to a long-standing list of defects that includes a repeatedly deteriorated rear exhaust. This suggests a pattern of minimal, reactive maintenance where components are only addressed when they approach a critical threshold. The mileage accumulation tells a story of very light use. Between the November 2021 test at 54,419 miles and the December 2025 test at 69,521 miles, the car covered just 15,102 miles over four years, averaging roughly 3,775 miles annually. The increments between tests are consistent and modest: 3,329 miles in 2022, 3,576 miles in 2023, 3,576 miles in 2024, and 4,149 miles in the longer 2025 interval. There are no alarming gaps or sudden spikes in the odometer record. However, such low annual mileage raises its own concerns. Long periods of standing can cause perished rubber components, flat-spotted tyres, and moisture ingress into brake and fuel systems. The repeated deterioration of the rear exhaust is consistent with a car that sits unused for extended periods, allowing condensation to corrode the silencer from the inside out. A buyer should treat the rear exhaust as a near-certain replacement item. The advisory for a deteriorated rear exhaust has appeared in every single test from 2021 through 2025, indicating a systemic corrosion issue rather than a one-off defect. The rear inner brake pads flagged in 2025 demand immediate inspection of the entire rear braking system, including calipers for seizure and discs for uneven wear, as low-mileage cars frequently suffer from binding brakes due to corrosion on sliding mechanisms. The worn front anti-roll bar linkage bushes noted in 2021 were never addressed and will almost certainly have degraded further, so a physical check of the front suspension bushes and drop links is essential. Both front CV joint boots were flagged as severely deteriorated in 2021, and the absence of subsequent advisories does not confirm replacement; it may simply mean the tester stopped recording them once the boots had already split and lost their grease. A close inspection of the inner wings, sills, and subframes for structural corrosion is strongly advised, as a 20-year-old MG ZR of this era is highly susceptible to rust in load-bearing areas, and the MOT record provides no evidence that any preventative treatment has ever been applied.