2004 Mazda MX-5 1.8L Petrol · JM04 MAS

The vehicle most recently passed its MOT on 24 June 2025 with no defects or advisories recorded against it, indicating that at the point of test it met the minimum statutory roadworthiness requirements. However, the broader recent test history is somewhat irregular and warrants careful attention. Prior to the June 2025 pass, the vehicle failed on 2 June 2025 and was also failed twice in early 2024, once on 7 March and again on 17 January. The pattern of two failures early in 2024 followed by a pass later in the same year, then a further failure in June 2025 before passing later that month, suggests that the vehicle may have had issues addressed between tests or, alternatively, that intermittent faults were present which were subsequently rectified. The absence of recorded defects on any of these tests is unusual; typically a failure should record at least one category of defect, and the lack of such information means the prospective buyer cannot trace the specific mechanical reasons for those failures. This alone should prompt further enquiry with the seller to obtain repair invoices or the full VT30 refusal notices from those dates, as the test centre should be able to confirm what items caused the failure. With a recorded mileage of 39,321 miles over approximately 22 years, the vehicle has averaged around 1,787 miles per year, which is notably low for a Mazda MX-5 of this vintage and well below typical annual usage figures. This low mileage figure suggests either light, occasional use or, more likely, extended periods of standing or very sporadic motoring, which is a common scenario with sports and leisure-oriented vehicles. While low recorded mileage can preserve major mechanical components such as the engine, gearbox and clutch from wear-related degradation, it simultaneously introduces a different set of age-related concerns. Prolonged standing periods encourage corrosion on brake discs, leading to surface rust and potential brake shudder upon reapplication, and can promote binding or seized brake calipers, particularly on rear calipers with integrated handbrake mechanisms. Coolant, brake fluid, and differential or gearbox oil will all have degraded by calendar age rather than mileage, and a 22-year-old vehicle will almost certainly require time-based replacement of these fluids irrespective of odometer reading. The relatively short gaps between the 2024 and 2025 tests suggest the vehicle has remained in active use and on the road, although confirmation of consistent use between test cycles would be reassuring. Given the absence of any recorded advisories across the MOT history, the prospective buyer must rely on physical inspection and age-appropriate judgement rather than the test record to assess condition. Tyres on a vehicle of this age and standing-time profile should be examined very carefully for sidewall perishing and cracking, as rubber compounds deteriorate significantly beyond roughly six to seven years regardless of tread depth; any DOT date codes showing manufacture older than 2019 should be treated with caution. The 12V battery is almost certainly due for replacement if it is the original unit, and a load test or at minimum a voltage check should be requested, as standing vehicles frequently suffer from discharged and sulphated cells. The MX-5 is well known for susceptibility to corrosion around the rear wheel arches, sills, and boot floor, areas which an MOT would not necessarily flag as a failure unless they had reached an advanced stage, so a thorough visual inspection underneath the vehicle and around these specific zones is strongly advised, ideally with the car raised on a ramp. Brake discs should be inspected for significant edge lipping and pitting corrosion, and the handbrake should be tested on an incline to confirm clean operation without excessive travel or dragging. On a test drive, particular attention should be paid to any suspension clonks or knocks, especially over uneven surfaces, as worn bushes, top mounts, and anti-roll bar drop links are common on the MX-5 and tend to deteriorate with age even at low mileage. Steering response should feel precise and free from excess play, as worn tie bar ends or rack mountings can develop slack. The transmission should be checked for smooth engagement in all gears, with particular care taken to confirm clean selection of second gear and reverse, which are known weak points on this model. Listen for any timing chain rattle on a cold start, as a worn primary or balance shaft chain tensioner on the 1.8-litre engine can produce a characteristic rattle that settles as oil pressure rises. Exhaust smoke on start-up should be minimal, as excessive blue or white smoke would indicate valve seal or head gasket concerns. Finally, verify that the service history corroborates the low mileage with documented time-based servicing including cambelt replacement, which on the 1.8-litre engine is typically recommended at 60,000 miles or six years, and that cooling system, brake fluid, and differential oil changes have been carried out at appropriate calendar intervals regardless of the odometer reading.