Parkers overall rating: 4 out of 5 4.0

Miles per pound (mpp) Miles per pound (mpp)

Reliable fuel consumption data for comparison purposes is not available for this model.

Fuel economy

A more stringent standard for fuel economy (WLTP) was introduced from September 2017, and this model was not required to undergo that test. Its fuel economy measured under the previous test system was 24 - 26 mpg. However these figures are less likely to be achievable in real world driving and so should never be compared to another car's mpg which was measured under the newer, more realistic WLTP system.

The Mazda is well priced but depreciation is only average and it doesn't hold it's value as well as the Nissan 350Z. The biggest cost owners will face is fuel - the claimed economy figure is around 26mpg, while tax and insurance will also be high. Mazda servicing is reasonable though and the dealers have an ever-improving reputation.

There's no getting away from the fact that the RX-8 is a polluting model. The high output model emits 284g/km of CO2 while the less powerful variant is little better, putting out 267g/km. Both models are very thirsty too - averaging around 26mpg. The R3 has a tweaked engine - but emissions are 299g/km of CO2 and economy has dipped slightly to 24mpg.

Rotary engines used to suffer premature wear problems, but Mazda claims to have resolved this. However regular maintenance is essential - if oil consumption is not monitored regularly and the level falls too low, the engines rotor tips will wear out, which will prove very expensive in the long run. Otherwise reliability should be good. The R3 model comes with a larger oil capacity and an easier to access dipstick.

Ongoing running costs

Road tax (12 months) £340 - £600
See tax rates for all versions
Insurance group 27 - 34
How much is it to insure?