MAZDA RX-8 (2006)
Running costs, reliability data, and common problems from 999 real MOT tests.
Annual Cost
£2,577
£215/month
MOT Pass Rate
76%
Average
Road Tax
£430
Based on CC/year
Insurance
Grp 30-42
2616cc Petrol
Check Carefully
76% pass rate, £2577/year to run. 6 points below average.
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Annual Running Costs
~30 mpg
Based on 2616cc
Based on 7,400 miles/year (UK average), current fuel prices, and repair likelihood from MOT data. Insurance not included.
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Reliability Verdict
Average reliability. Expect some repairs as it ages. That's 6 points below the national average of 82%. It falls below the MAZDA brand average of 81%.
At 20 years old, 76% of MAZDA RX-8s from 2006 passed their MOT first time in 2026. That's based on 999 tests across the UK. The average mileage at this age is 66,411 miles.
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Mileage Analysis
66,411
Average miles
148,000
Expected for age
The average 2006 MAZDA RX-8 has 66,411 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.
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Best Year to Buy?
The most reliable year is the 2010 model with a 85% MOT pass rate, while the 2004 model has the lowest at 73%. The 2006 sits between the two at 76%.
MAZDA RX-8 by Year
Similar Cars to Consider
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About the 2006 MAZDA RX-8
The 2006 MAZDA RX-8 is a large car with a 2616cc petrol engine. 999 of these vehicles were MOT tested in 2026, making it a less common model in the UK market. Among all cars from 2006, the average MOT pass rate is 73%, and this model beats that benchmark.
With an average of 66,411 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.
2006 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 2006 MAZDA RX-8?
Total estimated annual running cost is £2,577 (£215/month), broken down as £1592 fuel, £430 road tax, £55 MOT, and £500 predicted repairs. Repair costs are moderate, reflecting the 76% 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 2006 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. If you're flexible on year, the 2010 model has the highest pass rate at 85%.
Common Issues to Watch For
Based on the 2006 MAZDA RX-8's fuel type, age, and engine size, these are the most likely problem areas to check.
Timing Chain / Belt
Watch outAt 20 years old, check whether the timing belt has been replaced (typically due every 5-7 years or 60,000-100,000 miles). A snapped belt can destroy the engine.
Oil Consumption
Medium riskLarger petrol engines can develop higher oil consumption as they age. Check the oil level and look for blue smoke from the exhaust.
Rust and Corrosion
Watch outAt 10+ years, check wheel arches, sills, subframe, and brake lines for rust. Structural corrosion is an MOT failure. Prevention is far cheaper than repair.
Suspension Bushings
Watch outRubber suspension bushes harden and crack with age, causing knocking noises and vague handling. A full refresh costs £300-£800 depending on the car.
Service History
Low riskAlways request a full service history. Regular servicing is the single best indicator of how well a car has been maintained, regardless of mileage.
Running Costs Compared
How the 2006 MAZDA RX-8 stacks up against similar cars for annual running costs, insurance, and tax.
| Car | Pass Rate | Fuel/yr | Tax/yr | Insurance | Total/yr |
|---|---|---|---|---|---|
| MAZDA RX-8(2006) | 76% | £1592 | £430 | Grp 30-42 | £2577 |
| AUDI TT(2007) | 80% | £1592 | £250 | Grp 25-38 | £2247-£330 |
| SAAB 9-3(2007) | 76% | £1592 | £250 | Grp 30-42 | £2397-£180 |
| LAND ROVER RANGE ROVER SPORT(2008) | 82% | £1592 | £250 | Grp 30-42 | £2247-£330 |
| MERCEDES E(2005) | 78% | £1592 | £250 | Grp 30-42 | £2397-£180 |
Estimates based on 7,400 miles/year, current fuel prices, and MOT data. Insurance groups are indicative. Actual costs vary by driver, location, and usage.
Related Mazda Models
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AUDI TT
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