2017 Mazda 3 2.0L Petrol · TM08 SUE

The 2017 Mazda 3 holds a current MOT valid until 21 August 2026, having passed its most recent test on 21 August 2025 at 49,035 miles. The maintenance trend over the past two years is clearly worsening. A failure on 18 August 2025 at 49,037 miles flagged critically thin rear brake pads at under 1.5 mm, a worn inner rear disc face, corroding rear flexi hoses, corroding front metal brake pipes, and a malfunctioning tyre pressure monitoring system. Three days later, the car passed at 49,035 miles, yet the tester still noted both front tyres were cracked and perishing. This pattern suggests the immediate brake and hose defects were addressed to gain a pass, but the corroded front metal pipes and perishing front tyres were left outstanding, indicating a reactive rather than preventative maintenance approach. The mileage profile is notably low for a nine-year-old vehicle. Recorded at 38,057 miles in August 2022, it reached 40,999 miles by August 2023, then 45,240 miles by August 2024, and finally 49,035 miles by August 2025. This equates to roughly 2,900 to 4,800 miles per year over the last three years, well below the UK average. The 2025 failure and pass occurred within three days at virtually identical readings, confirming the car covered negligible mileage between those two tests. Such low annual use raises the question of long periods of standing, which can accelerate rubber perishing, hose corrosion, and brake disc surface rust, all of which appear in the record. Buyers should treat the braking system as the primary area of concern. The tester flagged corroding front metal brake pipes in the August 2025 failure, and while the car passed days later, there is no evidence these pipes were replaced rather than cleaned and cosmetically treated. Corrosion to metal lines is a structural integrity issue that can lead to pressure loss under heavy braking. The rear flexi hoses were also corroding at the same test, and the rear ferrules showed slight corrosion as far back as the August 2024 test. A thorough in-person inspection should include a close examination of all rigid brake lines and flexible hoses for pitting, weeping, or bulging, along with a check of the rear disc thickness and pad material remaining. The perishing front tyres noted in the August 2025 pass are a secondary but telling defect. Cracked and perished sidewalls indicate age-related degradation rather than simple wear, consistent with a car that sits unused for extended periods. The malfunctioning tyre pressure monitoring system was flagged in the failure and presumably rectified for the pass, but a buyer should verify the system resets correctly and holds a calibration. Given the low mileage and the nature of the defects, a pre-purchase inspection should also cover suspension bushes, coil springs, and subframe mounting points for corrosion, as standing vehicles often develop surface rust in underbody components that can mask deeper structural issues.