2015 Mazda 6 2.2L Diesel · LM15 ADU

The vehicle's roadworthiness is currently compromised by a worsening trend in structural and suspension health. While the car passed its most recent test on 1 July 2026 at 106,421 miles, the tester flagged significant corrosion on the rear subframe and suspension. This issue was first noted as an advisory in the June 2025 test at 101,715 miles and has now escalated into a recurring concern. The failure of the offside front suspension arm ball joint during the July 2026 test indicates that the degradation of the underbody components is progressing from surface corrosion to mechanical wear. The mileage accumulation is consistent with a typical usage pattern for an eleven-year-old vehicle, averaging approximately 9,675 miles per year. The records show steady annual increases, moving from 77,250 miles in August 2020 to 106,421 miles in July 2026. There are no significant gaps in the testing history that would suggest long periods of inactivity, though the consistency of the mileage suggests the vehicle has been used regularly for commuting or general road use. A prospective buyer must prioritise a thorough inspection of the vehicle's underside. The repeated advisories regarding rear subframe and suspension corrosion suggest that the structural integrity of the chassis may be at risk. You should check the extent of the rust to determine if it is merely superficial or if it has caused significant thinning of the metal. The recent failure of the offside front suspension arm ball joint also suggests that further replacement of suspension bushes, ball joints, or coil springs may be necessary in the near future. The history also shows a pattern of neglecting consumable items, such as tyres and wiper blades, which often indicates reactive rather than proactive maintenance. The June 2025 test flagged both front tyres as being worn close to the legal limit, and the 2023 test noted similar issues with the rear tyres. While the braking system has shown minor issues like a pitted nearside front disc in August 2021, the current primary concern remains the escalating corrosion and the deteriorating condition of the suspension components.