1989 Mazda MX-5 1.6L Petrol · G642 BRT

The most recent DVSA MOT, dated 11 February 2023, recorded a pass but also highlighted a non‑functioning stop lamp, which would have been a failure under regulation 4.3.1. Prior to that the car has alternated between passes and failures, with major defects appearing in 2018 (headlamp and aim failures) and 2021 (off‑side front service brake binding and brake‑pipe corrosion). The pattern shows a modest improvement after the 2021 failures – the 2022 and 2023 tests were largely clean apart from the stop‑lamp issue – but the recurrence of brake‑pipe corrosion and occasional lighting faults indicates that some components have not been fully resolved and may require attention. At 124,796 miles the MX‑5 averages roughly 5,400 miles per year, well below the typical usage for a sports roadster of its age. Such low annual mileage often points to periods of limited use or prolonged storage, which can be as detrimental as high mileage in terms of ageing seals, rubber, and metal corrosion. The relatively modest wear on the drivetrain and suspension is encouraging, but the extended idle periods can accelerate tyre sidewall perishing, battery sulphation, and the development of surface rust on brake pipes and exhaust components. A prospective buyer should give the rear brake pipes a thorough visual inspection for rust, pitting or any signs of fluid seepage, especially around the near‑side and off‑side connections that have been flagged repeatedly. While the car may feel firm under braking, a binding front service brake can manifest as a pulsating pedal or a slight shudder when applying the brakes from speed; a test‑drive should include gentle and firm braking to detect any irregularity. All exterior lamps – main beam, dipped beam, and stop lamp – must be confirmed operational and correctly aimed, as previous headlamp aim failures suggest possible mis‑adjustment or ageing reflector lenses. The off‑side front brake binding noted in 2020 and 2021 should be checked for sticking caliper pistons or worn pads, and the brake fluid should be examined for moisture content, as old fluid can compromise braking efficiency. Given the car’s age and low usage, the buyer should also assess age‑related items that are not captured by the MOT. Tyres should be examined for sidewall cracking, dry rot or uneven wear that can arise from long periods of storage; any tyre older than six years should be replaced regardless of tread depth. The 12‑volt battery is likely to have suffered from sulphation and should be load‑tested or replaced if voltage falls below 12.5 V. Engine oil, coolant and brake fluid should be refreshed if they have not been changed within the last 12 months, as time‑based degradation can lead to seal failure and corrosion. Finally, inspect the suspension bushes, coil springs and chassis for any signs of rust or fatigue, and verify that the service book contains regular oil changes and any previous repairs to the brake system, as a well‑documented maintenance history will give confidence that the MX‑5 has been cared for despite its intermittent use.