2004 Mazda MX-5 1.6L Petrol · FH04 KLM

The vehicle is currently roadworthy but the maintenance history reveals a worsening trend regarding structural integrity. While the most recent test in May 2026 at 75,808 miles resulted in a pass, it flagged widespread corrosion across the front and rear sub-frames and all suspension arms. This follows a critical failure in February 2025 where the structural strength of the chassis legs and integral body structure was significantly compromised by excessive corrosion. Although repairs were subsequently made to address these major failure points, the persistent presence of surface corrosion indicates that the underlying metal is actively degrading. The mileage profile is notably low for a 22-year-old vehicle, averaging approximately 3,446 miles per year. There is a significant gap in records between April 2023 and February 2025, where the car covered only 565 miles in nearly two years. However, usage increased sharply between February 2025 and May 2025, with the car travelling 1,000 miles in just three months. This low annual mileage, combined with the documented rust issues, suggests the vehicle has sat stationary for long periods, which accelerates corrosion on suspension components and brake lines. A prospective buyer must conduct a thorough physical inspection of the repairs made following the February 2025 failure. The record shows that suspension mountings and integral body structures were covered in underseal, which can often mask the true extent of remaining rot. Particular attention should be paid to the inner sills and floor areas, as these have been flagged for corrosion since 2022. The recurring issue of binding nearside brakes and corroded brake pipes suggests that the braking system requires a comprehensive check to ensure no further leaks or seizures occur.