2016 Mazda Cx-3 1.5L Diesel · SN65 AAC

The most recent MOT, conducted on 5 February 2026, resulted in a failure due to a fractured near‑side front coil spring, a serious safety defect, and was accompanied by advisories concerning corrosion of the front sub‑frame, corrosion of the front suspension arm and an insecure heat‑shield on the fuel tank. Over the past three years the record shows a pattern of recurring front‑suspension deterioration – from a worn anti‑roll‑bar ball joint in 2024 and 2025 to the present coil‑spring fracture – together with persistent corrosion advisories and tyre perishing notes. Rather than stabilising, the trend is clearly worsening, indicating that the vehicle’s front‑end structural components have been subjected to progressive wear and environmental attack. At 41 091 miles the Mazda CX‑3 averages just over 4 100 miles per annum, which is considerably below the typical UK usage of around 8‑10 000 miles per year for a vehicle of this age. The low mileage suggests periods of limited use or prolonged storage, which can be a double‑edged sword: while wear on high‑mileage components such as the engine and gearbox may be limited, age‑related degradation – especially corrosion, rubber hardening and fluid breakdown – becomes more likely. The disparity between age and mileage also raises the possibility of unrecorded mileage, so a thorough odometer verification against service stamps is advisable. A prospective buyer should give particular attention to the front suspension assembly. The fractured coil spring indicates that the supporting coil may have been compromised by fatigue or corrosion; a visual inspection should confirm the condition of the spring, the mounting brackets and the associated anti‑roll‑bar linkage. Excessive play or clunking noises when applying steering input or traversing bumps would be symptomatic of worn ball joints or deteriorating bushings. The sub‑frame and suspension arm corrosion noted in the advisories, although not yet deemed structurally critical, should be examined for any rust penetration that could weaken mounting points, especially around the lower control arm and sub‑frame rails. The insecure heat‑shield on the fuel tank should be checked for proper fastening and signs of chafing, as a loose shield can lead to overheating of the tank or fuel line damage. Even if the front‑end issues are remedied, the vehicle’s age warrants a comprehensive checklist. The front tyres were flagged for cracking and perishing; examine the sidewalls for dry rot, bulges or tread‑wear irregularities and consider replacing them if the rubber is brittle. Corroded brake pipes and a hand‑brake that only just meets the minimum suggest the need for a brake‑system overhaul – inspect the flexi hoses for rust, ensure the hand‑brake lever feels firm and verify that the rear drums or discs are not seized. The battery, likely over ten years old, should be load‑tested, and all fluids – engine oil, coolant, brake fluid and power‑steering fluid – should be refreshed in line with calendar‑based service intervals. Finally, confirm that the service book contains stamps for regular oil changes, timing‑belt or chain service (if applicable), and that any previous suspension repairs have been documented, to give confidence that the vehicle’s structural integrity has been restored.