2015 Mazda 6 2.2L Diesel · SM15 OCB

The vehicle is currently roadworthy but the maintenance trend shows a shift toward developing age-related wear. While the most recent test in March 2026 at 118,816 miles passed, it revealed persistent general corrosion across both the front and rear suspension. This follows a more problematic period in early 2025 where the car failed due to a worn front suspension arm bush and electronic faults. The transition from mechanical failures to corrosion advisories suggests the vehicle is entering a phase of accelerated environmental degradation. The mileage pattern remains consistent with an eleven-year-old vehicle, averaging approximately 10,800 miles per year. Between March 2024 at 108,066 miles and March 2025 at 114,268 miles, the car covered 6,202 miles, indicating a slight dip in usage compared to the average. However, the subsequent 4,548 miles covered before the March 2026 test show a return to typical usage levels that maintain wear on drivetrain components. A physical inspection must focus heavily on the progression of the corrosion noted in the suspension components. The tester flagged general corrosion in both 2025 and 2026, so a buyer should verify if this is merely surface rust or structural thinning on the subframes and arms. The front suspension arm bush that was noted as worn in 2025 needs be checked to ensure it has not progressed into excessive movement which would compromise handling. Electronic systems also require scrutiny given the failure in March 2024 due to an inoperative Malfunction Indicator (MIL) and an ABS fault. While these were resolved in subsequent tests, the buyer must confirm that no warning lights remain active on the dashboard during operation to ensure the faults were not simply cleared without a permanent fix. Additionally, the previously mentioned tyre pressure monitoring system from 2025 should be verified for full functionality.