2018 Mazda 3 2.2L Diesel · DE18 OBH

The vehicle is currently roadworthy, but the maintenance history reveals a concerning pattern of reactive rather than preventative care. While the most recent test in March 2026 at 71,914 miles passed, it followed a significant failure involving critical braking components and corrosion. The trend shows that the owner only addresses faults once they reach the point of legal failure, evidenced by the recurring presence of worn brake hardware and corroded hydraulic lines across multiple years without proactive replacement. At 71,914 miles over eight years, the car has aged at an average rate of approximately 9,000 miles per year, which is consistent with typical domestic use. However, the interval between the March 2024 test at 56,161 miles and the March 2025 test at 61,322 miles shows a drop to only 5,161 miles. This lower annual mileage often accelerates the corrosion of brake pipes and disc pitting, as components sit exposed to moisture without being cleared through mechanical use. A buyer must conduct a thorough physical inspection of the braking system and hydraulic lines. The record consistently flags corrosion on the brake pipes across the front and rear, specifically noting the offside front and nearside rear lines. The March 2026 test identified the rear discs as heavily worn, pitted, and scored along with low pads, suggesting the braking system is operating at its absolute limit. The presence of grease on corroded pipes in previous tests suggests an attempt to mask structural rust from the tester. Attention should also be paid to the tyres and undercarriage. The 2024 failure for a structural bulge on the offside front tyre and the 2026 advisory for a bald inner edge indicate neglect of basic consumable maintenance. Given the recurring nature of the pipe corrosion, the buyer should verify that the recent repairs involved actual pipe replacement and ensure that the corrosion has not progressed beyond the visible areas.