2020 Mazda CX-30 2.0L Petrol · BT70 HTE

A 2020 MAZDA CX-30 with 53,028 miles tells a story of a vehicle that experienced a significant suspension and braking system failure in early 2024 before achieving a return to compliance. The 2024-03-01 MOT failure featured serious fluid leaks from both the nearside and offside rear shock absorbers together with pitting on the brake discs, marking a dual-point failure that required intervention before the car could pass again. It went on to clear its subsequent tests in March 2024, May 2025, and finally June 2026, returning to a passing status each time, though the latest result carried a minor advisory regarding rear tyre wear. This pattern indicates the underlying mechanical issues were eventually rectified, but the persistence of a tyre warning at the most recent test suggests the vehicle still needs attention to its tyre compound and longevity. The mileage figure of 53,028 miles accumulated over approximately six years works out to roughly 8,838 miles per annum, which sits squarely within the expected range for a modern compact SUV and does not reveal any anomalous acceleration in either direction. The MOT test schedule itself shows a fairly regular interval of inspections occurring roughly every three months between the 2024 failure and the 2026 pass, with no extended periods of inactivity that might point to prolonged lay-up. The gradual build-up in tested kilometres across the four recorded dates reflects steady, predictable use rather than sudden surges, meaning the mechanical systems have not been subjected to abrupt stress changes that would normally accelerate wear. Nevertheless, the absence of any sharp mileage jumps or gaps in the test record means there is no evidence of the vehicle sitting unused for extended stretches, which is a positive indicator for overall durability. Given the documented fluid leaks from the rear shock absorbers in 2024, the suspension linkages merit the highest priority during a test drive. Listen for a pronounced loss of damping when navigating uneven surfaces—the shock absorbers should provide a solid, controlled bounce, and any indication of excessive travel or a spongy feel would confirm internal damage. Pay particular attention to the nearside and offside rear shocks specifically, as they are the components flagged for severe fluid leakage. A healthy set will retain their original shape and show no external signs of cracking or deformation, and the ride should remain responsive through bumps without any noticeable sagging when the vehicle encounters a pothole or speed bump. These symptoms directly relate to the 2024 failure and represent the most immediate mechanical concern for a prospective buyer. The tyre advisory from the 2026-06-10 MOT identifies the offside rear tyre as worn close to the legal limit with measurable edge wear of 3mm, a condition that requires visual confirmation of tread depth and sidewall integrity. During the test drive, examine the tyre closely for uneven wear patterns, bulging sidewalls, or cuts that might not be immediately obvious. The tyre may still pass the legal distance requirement but could compromise handling and safety if left untreated, particularly given the vehicle's age and the modest mileage already logged. In combination with the previously identified shock absorber problems, this tyre condition means the car should be evaluated for both suspension fluid refurbishment and tyre rotation or replacement, whichever comes first, before considering it suitable for everyday road use.