Mazda Eunos (2004)

Estimated running costs and MOT pass rates from 204 MOT tests in 2024.

Annual Cost

£2,428

£202/month

MOT Pass Rate

68%

Below Avg

Road Tax

£275

Estimated/year

Est. Insurance

Grp 12-25

1590cc Petrol

Proceed With Caution

68% pass rate, £2,428/year to run. 14 points below average.

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Petrol1590cc22 years old204 tests121k miles avg

Annual Running Costs

Fuel (Petrol, 1590cc)

~42 mpg

£1,398

Road Tax

Estimated CO2 band

£275

MOT Test

£55

Predicted Repairs

Higher estimate due to low pass rate

£700

Total per year£2,428

Per month£202/mo

Per week£47/wk

Estimates based on 7,400 miles/year (UK average), petrol at 174.57p a litre (GOV.UK weekly average, week of 19 October 2026), GOV.UK road tax rates and repair likelihood from MOT data. Insurance not included.

Reliability Verdict

68% MOT pass rate(Below Avg)

0%All-model avg: 82%100%

Below average reliability. Budget extra for maintenance and repairs. That's 14 points below the average of 82% across all models in our data. It falls below the Mazda brand average of 81%.

68% of MOT tests on Mazda Eunoss from 2004 ended in a pass in 2024, when they were about 20 years old. That's based on 204 tests across the UK, retests included. The average mileage recorded at those tests was 121,116 miles.

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How Does It Compare?

Rank among 2004 models372nd of 470(bottom 22%)

Rank among Mazda models406th of 459(bottom 12%)

vs average of all models-14%(82% avg)

vs 2004 models average-4%(72% avg)

vs Mazda average-13%(81% avg)

Mileage Analysis

121,116

Average miles

148,000

Expected for age

The average 2004 Mazda Eunos had 121,116 miles on the clock at its 2024 MOT, which is in line with the expected 148,000 miles for a 20-year-old car, suggesting normal everyday use.

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Best Year to Buy?

Of the years with at least 100 tests, the 2000 model has the highest MOT pass rate at 79%, while the 2001 model has the lowest at 62%. The 2004 scores 68%. Newer cars usually pass more often simply because they are younger, so compare years of a similar age.

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

Ford Focus

2006 · 1596cc Petrol

£2,228/year

73%

+5%

MINI

2005 · 1598cc Petrol

£2,228/year

71%

+3%

BMW 3 Series

2006 · 1796cc Petrol

£2,361/year

80%

+12%

Honda Jazz

2006 · 1339cc Petrol

£2,153/year

71%

+3%

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About the 2004 Mazda Eunos

The 2004 Mazda Eunos is a small family car. Our records list a 1590cc petrol engine, though engines vary between versions. 204 MOT tests were recorded on this model in 2024, making it a less common model in the UK market. It sits in the bottom 22% of 2004 models for MOT pass rate.

With an average of 121,116 miles recorded at its 2024 MOT tests, Mazda Eunos owners drive about as much as the UK average.

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 £1,398 per year with petrol at 174.57p per litre (GOV.UK weekly average, week of 19 October 2026; based on 7,400 miles per year).

What does it cost to own a 2004 Mazda Eunos?

Total estimated annual running cost is £2,428 (£202/month), broken down as £1,398 fuel, £275 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

The Mazda Eunos has maintained consistent MOT pass rates across model years, varying by only 3 percentage points.

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 2000 model has the highest pass rate at 79%.

Common Issues to Watch For

These are typical issues for cars of this age, fuel type and engine size, not faults recorded on this model's MOT tests. Use them as a checklist when you view one.

Rust and Corrosion

Watch out

At 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 out

Rubber 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 out

With 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 risk

High-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 risk

Worn 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 out

With 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 risk

Always 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 estimated annual running costs, insurance group, and tax.

Car	Pass Rate	Fuel/yr	Tax/yr	Est. Ins. Group	Total/yr
Mazda Eunos(2004)	68%	£1,398	£275	Grp 12-25	£2,428
Ford Focus(2006)	73%	£1,398	£275	Grp 12-25	£2,228-£200
MINI(2005)	71%	£1,398	£275	Grp 12-25	£2,228-£200
BMW 3 Series(2006)	80%	£1,631	£325	Grp 18-32	£2,361-£67
Honda Jazz(2006)	71%	£1,398	£200	Grp 8-20	£2,153-£275

Estimates based on 7,400 miles/year, GOV.UK average pump prices for the week of 19 October 2026, GOV.UK road tax rates and MOT data. Insurance groups are our rough estimate from engine size, not official groups. Actual costs vary by driver, location, and usage.

Questions about the 2004 Mazda Eunos

Is the 2004 Mazda Eunos reliable?

Below average reliability. Budget extra for maintenance and repairs. 68% of MOT tests on 2004 Mazda Eunoss ended in a pass, from 204 tests (DVSA MOT data for tests in 2024, retests included). That's 14 points below the average of 82% across all models in the same data.

How much does a 2004 Mazda Eunos cost to run?

Our estimate is £2,428 a year (£202 a month): £1,398 fuel, £275 road tax, £55 MOT and £700 predicted repairs, based on 7,400 miles a year. Insurance is not included.

What is the MOT pass rate for a 2004 Mazda Eunos?

68% of 204 MOT tests on the 2004 Mazda Eunos ended in a pass (DVSA MOT data for tests in 2024, retests included). That ranks it 372nd of 470 models first registered in 2004 (bottom 22%).

Which year Mazda Eunos has the best MOT pass rate?

Of the years with at least 100 tests, the 2000 Mazda Eunos has the highest MOT pass rate at 79% and the 2001 the lowest at 62%. Newer cars usually pass more often simply because they are younger and have done fewer miles.

What is the average mileage for a 2004 Mazda Eunos?

The average mileage recorded at MOT tests on the 2004 Mazda Eunos is 121,116 miles, which is in line with the expected 148,000 miles for a 20-year-old car, suggesting normal everyday use.