2016 Mazda Cx-3 2.0L Petrol · SW16 YCJ

The most recent MOT, conducted on 29 August 2025 at 56,463 miles, resulted in a pass, but the record reveals a pattern of borderline maintenance rather than proactive care. The vehicle failed its initial attempt that same day on four separate items, including a non-functioning nearside rear seatbelt and a significantly weakened offside rear belt. These are not minor cosmetic niggles. A seatbelt that fails to retract or shows webbing damage is a critical safety defect, and the fact it was flagged as an advisory in August 2024 before becoming a failure a year later suggests the deterioration was gradual and ignored. The maintenance trend is stable in the sense that the car keeps passing, but the underlying approach appears reactive, with defects often left to worsen between tests rather than being addressed early. The mileage profile tells a clear story. In the decade since registration, the Mazda has covered just 56,463 miles, averaging roughly 5,646 miles annually. That is exceptionally low. Between the August 2024 test at 53,479 miles and the August 2025 test at 56,463 miles, the car added only 2,984 miles in twelve months. Such low annual use often means long periods stationary, which can cause its own problems. Brake discs can surface-corrode from lack of use, tyres can flat-spot or perish with age rather than wear, and rubber bushes can dry out. The record supports this. The 2023 test flagged a nail in the nearside rear tyre and a perishing offside rear tyre, classic signs of a car sitting idle rather than being driven regularly. The recurring brake and corrosion advisories warrant close physical inspection. In August 2025, the tester noted corroded front brake pipes covered in grease or other material on both sides, alongside worn and pitted discs on all four wheels. Pitting on discs is often exacerbated by a vehicle standing for extended periods, allowing moisture to settle on unprotected surfaces. The grease covering the corroded pipes is concerning. It may be an attempt to mask the corrosion rather than a proper repair. A buyer should have the front brake pipes inspected underneath for active weeping or heavy pitting, and the discs measured for thickness against Mazda's minimum specification. The rear brake discs were similarly flagged as worn and pitted in 2023, so the entire braking system needs a thorough check. Beyond the brakes, the seatbelt defects and headlamp issues point to a car that has not been kept in meticulous condition. The offside headlamp aim was too low at the 2025 failure, and condensation has been noted on that lens across multiple tests, indicating a failed seal. Water ingress inside a headlamp can corrode reflectors and connectors over time. The rear centre seatbelt stalk was not even visible during the 2025 failure, suggesting it was buried or jammed, which raises questions about how the rear seats and belts have been treated. A prospective buyer should test every seatbelt for full retraction and locking under a sharp tug, check the headlamp lens for internal moisture, and inspect the underbody for corrosion that may not yet have triggered a failure but could develop quickly once the car is used more intensively.