2018 Mazda 3 2.0L Petrol · AP18 TKD

The most recent MOT test, conducted on 2026-07-21, resulted in a clean pass with only a single minor defect—damaged windscreens that did not impair the driver’s field of vision—and a persistent advisory regarding the rear brake discs. The pattern of MOT results over the past eight years is stable, with no failures or worsening conditions detected beyond the recurring advisory on the rear brake discs. This consistency suggests that while the vehicle has maintained roadworthiness, the brake disc wear is a developing concern that requires attention to prevent potential compromise of braking performance or structural integrity over time. The recorded mileage of 43,461 miles for a 2018 Mazda 3 represents a relatively low annual usage rate of approximately 5,433 miles per year, which is notably below the average for vehicles of this age. Such low mileage often correlates with periods of prolonged inactivity, where components such as brakes, suspension, and fluids may degrade more slowly due to reduced dynamic stress. However, it also means that consumables like brake pads, tyres, and fluids may have been less frequently replaced or replenished, potentially accelerating wear from static conditions or environmental exposure. The absence of rapid mileage accumulation in recent years supports the likelihood of controlled usage, but buyers should be mindful of how long the vehicle has been stationary, as standing can exacerbate issues like brake disc corrosion, caliper binding, or fluid degradation. To conduct a thorough pre-purchase inspection, focus on the brake system, particularly the rear discs and calipers, given the recurring advisory. Visually inspect the rear brake discs for signs of excessive pitting, warping, or corrosion, and listen for any unusual noises such as grinding or squeaking during braking. Check for binding calipers, which may indicate seized or corroded components, and verify that the brake fluid level is adequate and free from contamination. A test drive should include hard braking from moderate speeds to assess braking performance and listen for any pulsation or shudder, which could signal warped discs or uneven wear. Additionally, examine the rear suspension for signs of worn bushes or damaged springs, as these can contribute to handling issues or increased tyre wear. Beyond the brake system, given the vehicle’s age and low mileage, prioritise checks on the tyres for sidewall cracking or perishing, which can weaken structural integrity over time, even with minimal usage. Inspect the 12V battery for signs of corrosion on terminals or a declining voltage, as prolonged inactivity can lead to battery discharge. Check the fluid levels in the engine, transmission, and differential, ensuring they are topped up and free from discolouration or sediment, as standing fluids can degrade more rapidly. Finally, verify that the service book or maintenance records are up to date, particularly for fluid servicing intervals, which for a Mazda 3 typically include oil and filter changes every 15,000 to 30,000 miles or annually, depending on driving conditions. If no service history is available, consider scheduling a professional inspection to confirm the vehicle’s mechanical condition and address the brake disc advisory promptly to avoid more costly repairs.