CarCostCheck

Mazda RX-8

Reliability, estimated running costs, and MOT data across 8 model years from 5,362 MOT tests in 2024.

Avg Pass Rate

78%

Total Tests

5,362

Highest Pass Rate

2010 (85%)

Years Covered

8

About the Mazda RX-8

The Mazda RX-8 was MOT tested 5,362 times in 2024 (DVSA data, retests included) across 8 model years (2003 to 2010), with an average pass rate of 78%. That's close to the average of 82% across all models in our data. Our records list petrol versions.

Best and Worst Years

Of the years with at least 100 tests, the 2010 model has the highest pass rate at 85% from 169 tests. The 2004 model has the lowest at 73%. The 12 point gap means pass rates vary somewhat between years, but no year is dramatically different. Newer cars usually pass more often simply because they are younger.

Reliability Trend

Newer Mazda RX-8s pass their MOT more often than older ones, by 3 percentage points on average, which is mostly down to age and wear.

Mileage Across Years

The oldest model in our data (2003) averages 70,074 miles, while the newest (2010) averages 63,729 miles.

Estimated Running Costs

Fuel (Petrol, 2616cc)
£1,958
Road Tax
£445
MOT Test
£55
Predicted Repairs
£350
Total per year£2,808
Per month£234/mo

Based on 7,400 miles/year, average pump prices of 174.57p petrol and 199.33p diesel (GOV.UK weekly road fuel prices, week of 19 October 2026), and MOT pass rate data. Insurance not included.

Full 2010 details

How reliable is the Mazda RX-8?

vs average of all models-4% (82% avg)
vs Mazda brand average-3% (81% avg)
Best to worst year spread12 percentage points
Reliability trendImproving over years

Mazda RX-8 by Year

Click any year to see detailed running costs, reliability data, and comparisons with similar cars.

YearPass RateTestsAvg Mileage
201085%16963,729 mi
200981%53066,357 mi
200875%81666,277 mi
200777%1,08364,619 mi
200676%99966,411 mi
200574%68266,967 mi
200473%91468,061 mi
200382%16970,074 mi

Questions about the Mazda RX-8

Is the Mazda RX-8 reliable?

Across its 8 model years in our data (2003 to 2010), the Mazda RX-8 averages a 78% MOT pass rate, from 5,362 tests (DVSA MOT data for tests in 2024, retests included). That's 4 points below the average of 82% across all models in the same data. The 2010 model has the highest pass rate of the years with at least 100 tests, at 85%.

Which year Mazda RX-8 has the best MOT pass rate?

Of the years with at least 100 tests, the 2010 Mazda RX-8 has the highest MOT pass rate at 85%, while the 2004 model has the lowest at 73%, a 12 point gap. Newer cars usually pass more often simply because they are younger, so compare years of a similar age.

Are newer Mazda RX-8s more reliable?

Newer Mazda RX-8s pass their MOT more often than older ones, by 3 percentage points on average, which is mostly down to age and wear.

Mazda RX-8 Guides & Articles

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