2015 Mazda 6 2.2L Diesel · SM15 OCX

The 2015 Mazda 6 presents a broadly stable maintenance profile through its MOT history, passing every recorded test, yet the most recent examination on 08 December 2025 at 100,859 miles reveals a cluster of age-related consumable wear that demands attention. Both front tyres were noted at 3mm, sitting right at the legal minimum threshold, while both rear tyres carried advisories for cracking or perishing. This pattern of tyre degradation has persisted across multiple consecutive tests, suggesting the vehicle has spent extended periods stationary or has been driven gently on short journeys that accelerate sidewall deterioration rather than even tread wear. The car remains roadworthy, but the trajectory of these advisories points to deferred rather than proactive upkeep. The mileage accumulation of roughly 9,169 miles per year over eleven years sits squarely within typical use for a vehicle of this age, and the record shows consistent annual testing with no alarming gaps. The 4,344-mile jump between the December 2024 test at 96,515 miles and the December 2025 test at 100,859 miles indicates a modest uptick in usage during the most recent year, though nothing that would raise concerns about excessive wear on drivetrain components. The record itself is clean in terms of test frequency, with no missed years or sudden mileage anomalies that might suggest odometer tampering or prolonged storage. A buyer inspecting this vehicle in person should focus on the rear tyres specifically, as the recurring cracking and perishing advisories from November 2023 through December 2025 suggest these may have exceeded their safe service life by now regardless of remaining tread depth. The nearside front anti-roll bar linkage ball joint dust cover was flagged as severely deteriorated in December 2024, and while this did not reappear as an advisory in the 2025 test, the underlying joint should be checked for play or grease loss. The slight play detected in the offside front lower suspension arm ball joint back in November 2023 at 91,049 miles also warrants physical inspection, as such wear can progress silently over 10,000 miles and affect steering precision. Beyond the flagged items, the loose rear heat shield noted in November 2021 at 77,960 miles should be verified as secured, since a detached shield can contact the exhaust system and pose a fire risk. The vehicle has no recorded structural corrosion or braking defects across its history, which is encouraging for a car of this age. Still, a thorough underbody inspection for surface rust on suspension mounting points and exhaust hangers remains prudent given the tyre condition suggests the car may have spent time standing on damp ground.