2016 Mazda 3 2.0L Petrol · SO65 XCB

The vehicle is currently roadworthy, but the maintenance trend shows a concerning shift toward structural degradation. While the most recent test in March 2026 at 83,246 miles passed, the tester identified corrosion on the rear sub-frame and rear suspension arm. Although these components were not classified as seriously weakened at that time, the presence of rust on structural mounting points indicates the beginning of a process that will likely require expensive intervention soon. The mileage pattern remains consistent with a low-use vehicle, averaging approximately 8,300 miles per year. Data shows a steady progression from 56,929 miles in March 2023 to 83,246 miles in March 2026. This regular usage suggests the car has not sat stationary for long periods, though the sudden failure in March 2024 at 65,838 miles highlights that while the car is kept driven, specific preventative maintenance on brake lines and suspension was neglected. A buyer must conduct a thorough physical inspection of the underbody to assess the depth of the reported corrosion. The 2024 failure revealed all four brake pipes were corroded and obscured by grease, which often indicates an attempt to hide surface rust rather than replacing the lines. You should verify that these brake pipes were replaced with fresh material and check for any signs of weeping fluid at the unions or calipers. Given the fractured offside rear coil spring noted in that same failed test, the entire rear suspension assembly should be checked for fatigue or uneven wear.