2018 Mazda CX-5 2.2L Diesel · ST18 ATF

The most recent MOT test on 2026-02-09 resulted in a passing outcome, though it revealed persistent advisories that suggest a pattern of recurring issues rather than a sudden deterioration. The vehicle’s maintenance history shows a stable trend for most years, with clean MOT results in 2025 and 2024, except for the consistent near- and offside front brake pipe corrosion and grease accumulation, which have been flagged since 2024. The 2023 MOT failure—highlighting worn brake discs, thin brake pads, and a major washer fluid deficiency—indicates that while the vehicle has avoided major failures, the brake system has been under pressure, particularly in terms of wear and potential fluid-related issues. These advisories, especially the corrosion on the brake pipes, could escalate if left unaddressed, potentially leading to reduced braking efficiency or even hydraulic failure if the corrosion compromises the pipe’s structural integrity. The recorded mileage of 35,075 miles for a vehicle aged approximately eight years represents a relatively low annual usage rate of around 4,384 miles per annum, which is notably below the average for its class. Such low mileage can stem from infrequent use, long periods of inactivity, or a preference for alternative modes of transport, but it also raises concerns about potential standing-related wear and tear. Components like brake systems, suspension elements, and fluids can degrade more rapidly when a vehicle stands for extended periods, leading to issues such as corrosion in brake lines, stiffened suspension bushes, or degraded brake fluid due to moisture absorption. Additionally, tyre wear patterns may not reflect typical driving conditions, potentially masking underlying issues or leading to uneven wear that could indicate deeper mechanical problems. For the prospective buyer, the most critical areas to inspect are the brake system and associated components, given the recurring advisories and the 2023 failure. Check the front brake pipes for signs of further corrosion, particularly around the joints and connections, and listen for any hissing or reduced braking performance when applying the brakes, which could indicate air in the hydraulic system or a compromised pipe. The brake discs should be examined for excessive pitting, warping, or signs of glazing, and the pads should be inspected for uniform thickness—if they are significantly worn, consider replacing them before they reach the minimum legal limit. Test the brakes on a drive to assess for any sponginess, pull to one side, or reduced stopping distance, which could signal hydraulic issues or binding calipers. Beyond the brakes, the oil leak advisory from 2024 warrants attention, as persistent oil loss can lead to engine damage if not rectified promptly. Inspect the engine bay for any oil stains or leaks around the valve cover, oil pan, or oil filter housing, and check for a loss of oil pressure during acceleration, which may indicate a failing oil seal or a leaking valve cover gasket. The tyre advisories, particularly the nearside and offside front tyres worn close to the legal limit and the rear tyres showing signs of cracking or perishing, necessitate a thorough visual inspection of the sidewall condition. Tyres with significant edge wear may indicate alignment or suspension issues, while sidewall cracking can signal underlying structural weaknesses or exposure to extreme temperatures. Finally, given the vehicle’s age and low mileage, consider checking the 12V battery for signs of weakness or corrosion on the terminals, as standing vehicles are prone to battery drain, and verify that all fluids—including brake fluid, coolant, and transmission fluid—are at the correct levels and free from contamination. If possible, review the service history to confirm that time-based maintenance, such as fluid replacements and suspension inspections, has been conducted according to Mazda’s recommended intervals.