1998 Mazda MX-5 1.8L Petrol · S668 AGH

The most recent MOT test on 2026-08-12 resulted in a failure, marking a significant deterioration from the previous clean passes in 2023 and 2024, where only minor or advisory issues were noted. This failure highlights a concerning escalation in major defects, particularly the missing driver’s airbag, faulty supplementary restraint system warning lamp, and elevated carbon monoxide emissions—all of which are critical safety components. The presence of multiple major failures in a single test suggests either a lack of proactive maintenance or underlying mechanical issues that have compounded over time. While earlier MOTs in 2022 and 2023 showed only advisory wear-related defects, the latest failure underscores a pattern of neglect or deferred servicing, particularly concerning the suspension and braking systems, which are now at a critical stage of deterioration. The vehicle’s recorded mileage of 102,600 miles over approximately 28 years represents an annual usage rate of around 3,664 miles, which is unusually low for a car of this age. Such low mileage often indicates prolonged periods of inactivity, particularly if the vehicle has been stored rather than driven regularly. However, this usage profile raises distinct concerns regarding wear patterns and potential hidden issues. Low-mileage cars can develop problems from prolonged standing, such as corrosion in suspension components, binding brake calipers due to rust, or fluid degradation from lack of use—all of which are exacerbated by the MX-5’s exposed mechanical systems. Additionally, the combination of low mileage and the recent MOT failures suggests that the vehicle may have been neglected during periods of disuse, leading to accelerated wear in critical areas like the exhaust system and electrical components. Given the recent MOT failures, the prospective buyer should conduct a thorough inspection focusing on the suspension and braking systems, as these are the most critical areas of concern. Start by checking for excessive play or clunking noises in the suspension, particularly around the chassis legs and anti-roll bar linkages, which may indicate worn bushes or loose components. On a test drive, listen for uneven tyre wear patterns, which could signal misalignment or suspension issues, and monitor the braking performance for any signs of shuddering, grinding, or reduced effectiveness—symptoms that may point to worn brake discs, pitted pads, or binding calipers. Inspect the exhaust system for leaks, rust, or excessive carbon monoxide emissions, as the recent MOT failure highlighted a potential exhaust-related hazard. Additionally, verify that all warning lamps, including the airbag and supplementary restraint system indicators, are functioning correctly and that the driver’s airbag is securely installed. For practical checks beyond the MOT history, the buyer should examine the tyres for signs of sidewall perishing or cracking, which can occur even at low mileage due to age-related degradation. Given the vehicle’s age and the advisories of corroded suspension components, inspect the chassis for rust, particularly around the wheel arches, undercarriage, and areas where the body panels meet the frame. Check the 12V battery for signs of corrosion on terminals and ensure it holds a charge, as prolonged disuse can lead to battery failure. Fluid levels, including brake fluid, coolant, and transmission fluid, should be topped up or replaced if they appear old or discoloured, as these fluids degrade over time even when the vehicle is not driven regularly. Finally, review any service records or maintenance logs to confirm that the vehicle has undergone essential time-based servicing, such as valve adjustments, spark plug replacements, and exhaust emissions checks, which are particularly critical for a car of this age and mileage.