2013 Mazda 3 1.6L Petrol · SN13 XMG

The 2013 Mazda 3 most recently passed its MOT on 6 October 2025 at 67,603 miles, but the maintenance trend is clearly worsening. That same day the vehicle failed an earlier test on identical mileage, with the tester flagging excessively worn nearside front anti-roll bar linkage ball joints and multiple tyres worn to the legal limit, including the offside rear on its inner edge. The car passed later that day after rectification, yet the underlying pattern of neglect is evident. Heavy general surface corrosion across both subframes and all suspension components was noted in both the 2024 and 2025 tests, and a corroded, slightly porous sump has been leaking oil since at least October 2024. These are not isolated advisories. They point to a vehicle that has spent extended periods standing or exposed to salted roads without adequate underbody protection. The mileage profile reinforces that concern. At roughly 5,200 miles per year over thirteen years, this is a low-mileage car, yet the MOT record shows a notable gap between October 2022 at 46,479 miles and October 2023 at 52,536 miles, a jump of 6,057 miles in twelve months, followed by another 5,571 miles to October 2024 and then a further 7,496 miles to October 2025. The annual mileage has been climbing, which may explain the accelerating wear on tyres and suspension joints. The 2022 test recorded zero defects, but every subsequent test has added new advisories or failures, suggesting the car has deteriorated rapidly as use increased. A buyer should treat the underside as the primary area of concern. The repeated advisory about heavy corrosion on both subframes and all suspension components warrants a thorough inspection on a ramp, not just a visual check from ground level. Subframe mounting points, jacking points, and inner wing seams need close examination for structural corrosion beyond surface oxidation. The corroded sump and persistent oil leak should be investigated for whether the porous metal requires replacement rather than a simple gasket repair. The inner-edge wear on the offside rear tyre seen in the 2025 failure suggests a tracking or alignment issue, possibly linked to the worn suspension bushes flagged in 2024, so a four-wheel alignment check is essential. The anti-roll bar linkage joint that failed in October 2025 may have been replaced, but the condition of the corresponding offside joint and all drop links should be verified. Tyre condition across all four corners should be inspected for uneven wear patterns, and the nearside rear child seat restriction noted in 2024 means the adult seatbelt on that side may not have been fully tested, so its retraction and locking function must be manually confirmed. The deteriorated rear registration plate is a minor cosmetic item but worth replacing to avoid future test failure. Overall, this car presents as one that has been lightly used for most of its life but poorly maintained in recent years, with corrosion and suspension wear now becoming the dominant mechanical risks.