MAZDA RX-8 (2004)
Running costs, common problems, and reliability data based on 914 real MOT tests in 2024.
MOT Pass Rate
73%
Total Tests (2024)
914
Avg Mileage
68,061 mi
Est. Annual Cost
£2,397
Is the 2004 MAZDA RX-8 reliable?
Average reliability. Expect some repairs as it ages. That's 9 points below the national average of 82%. It falls below the MAZDA brand average of 81%.
At 20 years old, 73% of MAZDA RX-8s from 2004 passed their MOT first time in 2024. That's based on 914 tests across the UK. The average mileage at this age is 68,061 miles.
How does the 2004 MAZDA RX-8 compare?
Mileage Analysis
The average 2004 MAZDA RX-8 has 68,061 miles on the clock, which is significantly below the expected 148,000 miles for a 20-year-old car. Low-mileage examples may have spent time sitting unused, so check for issues like corroded brakes or perished rubber seals.
Best year to buy a MAZDA RX-8?
The most reliable year is the 2010 model with a 85% MOT pass rate, while the 2004 model has the lowest at 73%. Consider a different year if reliability is a priority.
How much does a 2004 MAZDA RX-8 cost to run?
Higher than average due to low pass rate
Based on 7,400 miles/year (UK average), current fuel prices, and repair likelihood from MOT pass rate data. Insurance not included.
MAZDA RX-8 by Year
Checking a specific MAZDA RX-8?
Enter the reg plate to see its individual MOT history, mileage verification, and predicted costs.
About the 2004 MAZDA RX-8
The 2004 MAZDA RX-8 is a large car with a 2616cc petrol engine. 914 of these vehicles were MOT tested in 2024, making it a less common model in the UK market. Among all cars from 2004, the average MOT pass rate is 72%, and this model beats that benchmark.
With an average of 68,061 miles at 20 years old, MAZDA RX-8 owners tend to use this car less than the typical driver. Very low mileage could mean the car has been garaged or used only for short trips, which can cause its own issues like battery drain and moisture buildup.
2004 MAZDA RX-8 Fuel Costs
The 2616cc petrol engine is on the larger side, so fuel won't be this car's strong point. Expect around 30 mpg in mixed driving, which works out to roughly £1,592 per year at current petrol prices of 142p per litre (based on 7,400 miles per year).
What does it cost to own a 2004 MAZDA RX-8?
Total estimated annual running cost is £2,397 (£200/month), broken down as £1592 fuel, £250 road tax, £55 MOT, and £500 predicted repairs. Repair costs are moderate, reflecting the 73% pass rate. Keeping on top of servicing will help avoid surprises.
MAZDA RX-8 Reliability Trend
Newer MAZDA RX-8s show better MOT pass rates than older ones, with an average improvement of 3 percentage points.
Buying a Used 2004 MAZDA RX-8
At 20 years old, the MAZDA RX-8 is firmly in budget territory. Purchase prices are low, but check for rust, worn suspension bushes, and electrical gremlins. A full service history is especially valuable at this age.
Alternatives to the 2004 MAZDA RX-8
If reliability is your priority, there are 3 similar cars with a higher MOT pass rate. Here are comparable petrol cars with similar engines:
- MERCEDES E (2005) 78% pass rate (+5%) from 8,269 tests
- NISSAN X-TRAIL (2006) 67% pass rate (-6%) from 8,112 tests
- BMW X3 (2006) 78% pass rate (+5%) from 6,611 tests
- MERCEDES SLK (2004) 78% pass rate (+5%) from 6,598 tests