2017 Mazda Cx-3 2.0L Petrol · WD17 WRK

OVERALL VERDICT: The most recent MOT on 2025-09-11 resulted in a failure due to headlamp aim issues and an ongoing oil leak, though the latter was not excessive. This marks a deterioration from the previous year’s pass, indicating that maintenance has not kept pace with wear, particularly in lighting and engine sealing. While earlier tests showed minor brake wear, the recurrence of brake-related advisories without resolution suggests a trend of deferred servicing. Overall, the maintenance history shows a worsening pattern, especially concerning the engine seal and lighting systems. MILEAGE & WEAR PROFILE: At 40,681 miles after nine years, the vehicle has averaged approximately 4,520 miles per year—well below the UK average for this age group. This low mileage implies reduced mechanical wear compared to typical usage, potentially preserving components like suspension bushes, drivetrain elements, and transmission longevity. However, the persistent oil leak and repeated brake wear despite low mileage suggest either poor maintenance or potential underlying issues such as degraded seals or improper brake pad installation. The fact that brake discs were already pitted at 25,665 miles (2023) indicates early wear, which may be linked to driving habits or inadequate servicing rather than pure mileage. CRITICAL IN-PERSON CHECKS: Inspect the engine bay for signs of oil leakage around the valve cover gasket, oil pan, and timing cover; check for oil residue on spark plugs and surrounding areas. Examine both front brake calipers for binding or corrosion, and confirm that the brake pads are properly seated and not worn unevenly. Measure the thickness of the front brake discs to verify they meet minimum safe limits. Test the headlamp aim adjustment using a proper alignment tool or wall test—both lights must be correctly aligned to avoid glare and ensure visibility. Check the condition of the front suspension bushes and coil springs for visible cracking or deformation, as these can contribute to premature brake wear. Finally, inspect the exhaust system for rust or damage, particularly near the manifold and catalytic converter, as corrosion is common in older vehicles with low mileage due to infrequent use.