2009 Mazda 6 2.5L Petrol · WL09 FLN

Persistent corrosion across the chassis and suspension components represents the primary mechanical concern for this vehicle, as evidenced by a recurring pattern of advisories regarding the rear subframe and lower suspension arms dating back to 2019. While the most recent test on 21 January 2025 resulted in a pass, the record shows a progression from general corrosion to specific deterioration of the nearside and offside front upper suspension arm ball joint dust covers. This indicates that while the structural integrity of the subframe was noted as not seriously weakened in previous years, the degradation of rubber components and metal surfaces is an ongoing issue that requires close monitoring. The vehicle has covered 79,214 miles over its approximately 17-year lifespan, which averages to roughly 4,660 miles per year. This is a low annual mileage profile, which can sometimes mean components are subject to more frequent environmental exposure due to less regular use, potentially contributing to the documented corrosion issues. Mechanically, this low usage rate suggests that while drivetrain wear may be lower than average, rubber bushings, seals, and suspension linkages may be more susceptible to age-related perishing and oxidation rather than heavy mechanical fatigue. A physical inspection and test drive should focus heavily on the documented suspension and braking issues. Given the recent advisories regarding the front upper suspension arm ball joint dust covers, listen for any knocking, clunking, or creaking sounds when turning the steering wheel at low speeds or navigating uneven road surfaces. The history of binding brakes, specifically noted on the nearside front in 2024 and the offside front in 2019 and 2020, warrants a check for any pulling to one side during braking or a sensation of pedal judder. It is also advisable to inspect the rear brake discs for excessive pitting or scoring, as this was flagged as an advisory in 2023. The ongoing advisories regarding the rear subframe and lower suspension arm corrosion necessitate a thorough visual inspection of the vehicle's underside. You should look for significant surface rust or any signs of structural scaling on the subframe and the lower arms. Because the MOT history shows a transition from general corrosion to specific component deterioration, any signs of heavy oxidation or weeping from suspension joints should be treated as a high priority. Pay particular attention to the condition of the ball joint covers to ensure they are not split or brittle, as this can lead to premature joint failure.