2016 Mazda 6 2.2L Diesel · NX16 WHS

The vehicle remains roadworthy, but the maintenance history reveals a worsening trend regarding structural corrosion and brake line degradation. The most recent test on 12 June 2026 at 94,366 miles flagged corroision on both the nearside and offside front brake pipes, which were further obscured by grease. This follows a pattern established in June 2025 where all four brake pipes were noted for similar corrosion, indicating that the vehicle's hydraulic lines are failing environmently rather than through isolated incidents. The mileage pattern is consistent with a ten-year-old vehicle, averaging approximately 9,400 miles per year. The data shows steady accumulation, with roughly 10,000 miles driven between June 2024 and June 2025, and another 10,700 miles between June 2025 and 2026. While this suggests regular use rather than long periods of standing, the consistent exposure to the elements has clearly accelerated the oxidation of metal components and rubber parts on the lower chassis. A buyer must conduct a thorough underbody inspection focusing on the front and rear sub-frames. The 2025 test explicitly identified corrosion on these structures, and while marked as not seriously weakened at that time, the 2026 report of surface rust under the body suggests the process is progressing. The recurring mention of corroded brake pipes covered in grease indicates a previous attempt to mask the decay rather than replace the components, which poses a risk of sudden fluid loss. Suspension components also require close scrutiny. The record flags play in anti-roll bar ball joints and linkages in both 2022 and 2024. Combined with the history of perishing tyres and uneven wear noted in 2022 and 2025, the vehicle shows a history of reactive rather than preventative maintenance. An inspector should verify the integrity of all suspension bushings and ensure the sub-frame corrosion has not reached a point that requires expensive structural welding.