2003–2012 Mazda RX-8
Browse our directory of 2003–2012 Mazda RX-8 vehicles. Access instant MOT history reports, tax status, and reliability insights for any registration listed below.
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Common Problems & Reliability
The 2003–2012 Mazda RX-8 has 3 known issues. 2 of these are classified as serious faults that could be expensive to repair. 1 are moderate concerns worth inspecting before purchase.
Low Compression and Hot-Start Failure
SeriousWear in the rotary engine reduces compression, making the car increasingly hard to restart when warm and often leading to an expensive rebuild.
Symptoms: Long cranking when hot, Weak idle...
Est. repair cost: £2,500–£5,000
Rear Arch and Sill Corrosion
SeriousUK RX-8s rot around the rear arches, sills and front chassis rails, and fresh underseal can hide serious structural work.
Symptoms: Bubbling paint around arches, Rusty inner sills...
Est. repair cost: £500–£2,500
Ignition Coil Failure and Catalytic Converter Damage
ModerateWeak coils cause misfires and incomplete combustion, which can quickly overheat and destroy the catalyst on a rotary that already burns oil by design.
Symptoms: Misfire under load, Strong fuel smell...
Est. repair cost: £250–£1,200
Buying Tips for the 2003–2012 Mazda RX-8
- ✓A proper hot-and-cold compression test is far more important than a shiny body or low odometer reading.
- ✓Check for evidence of regular ignition-coil, plug and lead replacement; weak ignition quickly damages the catalytic converter.
- ✓Inspect rear arches, sills and front chassis rails carefully because rusty shells can make even a good engine uneconomic.
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