MAZDA EUNOS (2004)
Running costs, reliability data, and common problems from 204 real MOT tests.
Annual Cost
£2,157
£180/month
MOT Pass Rate
68%
Below Avg
Road Tax
£265
Based on CC/year
Insurance
Grp 12-25
1590cc Petrol
Proceed With Caution
68% pass rate, £2157/year to run. 14 points below average.
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Annual Running Costs
~42 mpg
Based on 1590cc
Higher estimate due to low pass rate
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
Below average reliability. Budget extra for maintenance and repairs. That's 14 points below the national average of 82%. It falls below the MAZDA brand average of 81%.
At 22 years old, 68% of MAZDA EUNOSs from 2004 passed their MOT first time in 2026. That's based on 204 tests across the UK. The average mileage at this age is 121,116 miles.
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How Does It Compare?
Mileage Analysis
121,116
Average miles
162,800
Expected for age
The average 2004 MAZDA EUNOS has 121,116 miles on the clock, which is below the expected 162,800 miles for a 22-year-old car. This suggests lighter use than average, which generally means less wear on major components.
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Best Year to Buy?
The most reliable year is the 1991 model with a 91% MOT pass rate, while the 2001 model has the lowest at 62%. The 2004 sits between the two at 68%.
MAZDA EUNOS by Year
| Year | Pass Rate | Tests | Avg Mileage | |
|---|---|---|---|---|
| 2007 | 71% | 35 | 122,270 mi | |
| 2006 | 69% | 131 | 112,752 mi | |
| 2005 | 71% | 120 | 111,293 mi | |
| 2004 | 68% | 204 | 121,116 mi | |
| 2003 | 74% | 292 | 111,043 mi | |
| 2002 | 76% | 195 | 109,025 mi | |
| 2001 | 62% | 181 | 123,515 mi | |
| 2000 | 79% | 170 | 122,304 mi | |
| 1999 | 77% | 120 | 114,377 mi | |
| 1998 | 73% | 78 | 138,042 mi | |
| 1995 | 68% | 34 | 115,396 mi | |
| 1993 | 75% | 53 | 115,752 mi | |
| 1992 | 72% | 50 | 98,231 mi | |
| 1991 | 91% | 57 | 137,664 mi | |
| 1990 | 89% | 47 | 93,777 mi |
Similar Cars to Consider
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About the 2004 MAZDA EUNOS
The 2004 MAZDA EUNOS is a small family car with a 1590cc petrol engine. 204 of these vehicles were MOT tested in 2026, making it a less common model in the UK market. It sits in the bottom 79% of 2004 cars for MOT pass rates.
With an average of 121,116 miles at 22 years old, MAZDA EUNOS owners tend to use this car less than the typical driver.
2004 MAZDA EUNOS Fuel Costs
The 1590cc petrol engine offers a reasonable balance between performance and economy. Expect around 42 mpg in mixed driving, which works out to roughly £1,137 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 EUNOS?
Total estimated annual running cost is £2,157 (£180/month), broken down as £1137 fuel, £265 road tax, £55 MOT, and £700 predicted repairs. The higher repair estimate reflects the 68% MOT pass rate. Cars in this bracket tend to need work on suspension, brakes, and emissions components.
MAZDA EUNOS Reliability Trend
Older MAZDA EUNOSs tend to have better MOT pass rates than newer ones, with an average decline of 8 percentage points across model years.
Buying a Used 2004 MAZDA EUNOS
At 22 years old, the MAZDA EUNOS 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 1991 model has the highest pass rate at 91%.
Common Issues to Watch For
Based on the 2004 MAZDA EUNOS's fuel type, age, and engine size, these are the most likely problem areas to check.
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.
Clutch Wear
Watch outWith an average of 121k miles, clutch replacement may be due (typical lifespan 60,000-100,000 miles). Budget £400-£800 for a new clutch kit.
Brake Discs and Pads
Medium riskHigh-mileage cars often need brake disc replacement, not just pads. A full set of discs and pads costs £200-£500 per axle.
Engine Mounts
Medium riskWorn engine mounts cause excessive vibration and movement. Replacement costs £150-£400 per mount. Check for vibration at idle with the bonnet open.
Higher Than Average Failure Rate
Watch outWith a 68% MOT pass rate, this model fails more often than most. Budget for unexpected repairs and get a thorough pre-purchase inspection.
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 2004 MAZDA EUNOS stacks up against similar cars for annual running costs, insurance, and tax.
| Car | Pass Rate | Fuel/yr | Tax/yr | Insurance | Total/yr |
|---|---|---|---|---|---|
| MAZDA EUNOS(2004) | 68% | £1137 | £265 | Grp 12-25 | £2157 |
| FORD FOCUS(2006) | 73% | £1137 | £135 | Grp 12-25 | £1827-£330 |
| MINI MINI(2005) | 71% | £1137 | £135 | Grp 12-25 | £1827-£330 |
| BMW 3 SERIES(2006) | 80% | £1327 | £135 | Grp 18-32 | £1867-£290 |
| HONDA JAZZ(2006) | 71% | £1137 | £30 | Grp 8-20 | £1722-£435 |
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.
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