Is the 2005 MAZDA MX-5 reliable?

Average reliability. Expect some repairs as it ages. 74% of MAZDA MX-5s from 2005 passed their MOT first time in 2026, based on 6,452 tests. That's 8 points below the national average of 82%.

How much does a 2005 MAZDA MX-5 cost to run?

Estimated annual running cost is £1,957 (£163/month), including £1137 fuel, £265 road tax, £55 MOT, and £500 predicted repairs.

What is the MOT pass rate for a 2005 MAZDA MX-5?

The 2005 MAZDA MX-5 has a 74% MOT pass rate based on 6,452 tests in 2026. This ranks 254 out of 526 cars from 2005.

Which year MAZDA MX-5 is most reliable?

The 2021 MAZDA MX-5 has the highest MOT pass rate at 96%. The least reliable year is 2001 at 73%.

MAZDA MX-5 (2005)

Q: What is the average mileage for a 2005 MAZDA MX-5?

The average mileage for a 2005 MAZDA MX-5 is 78,894 miles, which is below the expected 155,400 miles for a 21-year-old car. This suggests lighter use than average, which generally means less wear on major components.

Running costs, reliability data, and common problems from 6,452 real MOT tests.

Annual Cost

£1,957

£163/month

MOT Pass Rate

74%

Average

Road Tax

£265

Based on CC/year

Insurance

Grp 12-25

1597cc Petrol

Check Carefully

74% pass rate, £1957/year to run. 8 points below average.

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Petrol1597cc21 years old6,452 tests79k miles avg

Annual Running Costs

Fuel (Petrol, 1597cc)

~42 mpg

£1,137

Road Tax

Based on 1597cc

£265

MOT Test

£55

Predicted Repairs

Higher estimate due to low pass rate

£500

Total per year£1,957

Per month£163/mo

Per week£38/wk

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

74% MOT pass rate(Average)

0%National avg: 82%100%

Average reliability. Expect some repairs as it ages. That's 8 points below the national average of 82%. It falls below the MAZDA brand average of 81%.

At 21 years old, 74% of MAZDA MX-5s from 2005 passed their MOT first time in 2026. That's based on 6,452 tests across the UK. The average mileage at this age is 78,894 miles.

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How Does It Compare?

Rank among 2005 cars254th of 526(top 48%)

Rank among MAZDA models323th of 483(top 67%)

vs national average-8%(82% avg)

vs 2005 cars average+2%(72% avg)

vs MAZDA average-7%(81% avg)

Mileage Analysis

78,894

Average miles

155,400

Expected for age

The average 2005 MAZDA MX-5 has 78,894 miles on the clock, which is below the expected 155,400 miles for a 21-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 2021 model with a 96% MOT pass rate, while the 2001 model has the lowest at 73%. The 2005 sits between the two at 74%.

MAZDA MX-5 by Year

Year	Pass Rate	Tests	Avg Mileage
2021	96%	613	14,518 mi
2020	96%	329	18,739 mi
2019	95%	7,343	21,631 mi
2018	94%	8,140	26,083 mi
2017	94%	8,344	31,395 mi
2016	91%	7,859	36,898 mi
2015	90%	5,320	41,274 mi
2014	89%	5,163	41,708 mi
2013	87%	5,549	49,091 mi
2012	85%	5,782	51,355 mi
2011	83%	6,207	56,335 mi
2010	83%	8,571	61,066 mi
2009	82%	7,643	67,260 mi
2008	80%	9,907	71,545 mi
2007	79%	14,264	76,661 mi
2006	77%	11,920	78,342 mi
2005	74%	6,452	78,894 mi
2004	75%	6,025	83,106 mi
2003	75%	7,845	84,391 mi
2002	75%	6,001	88,865 mi
2001	73%	4,099	95,713 mi
2000	73%	5,716	95,771 mi
1999	73%	8,535	94,916 mi
1998	75%	8,017	96,676 mi
1997	76%	5,880	95,736 mi
1996	76%	3,588	94,755 mi
1995	74%	2,206	95,892 mi
1994	76%	1,222	106,680 mi
1993	78%	1,148	108,396 mi
1992	76%	1,259	115,553 mi
1991	78%	1,798	109,861 mi
1990	79%	1,614	108,931 mi

Similar Cars to Consider

FORD FOCUS

2007 · 1596cc Petrol

£1,827/year

73%

-1%

BMW 3 SERIES

2007 · 1796cc Petrol

£1,867/year

80%

+6%

MINI MINI

2007 · 1598cc Petrol

£1,827/year

73%

-1%

RENAULT CLIO

2007 · 1998cc Petrol

£2,217/year

68%

-6%

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About the 2005 MAZDA MX-5

The 2005 MAZDA MX-5 is a small family car with a 1597cc petrol engine. 6,452 of these vehicles were MOT tested in 2026, making it a reasonably common sight on UK roads. Among all cars from 2005, the average MOT pass rate is 72%, and this model beats that benchmark.

With an average of 78,894 miles at 21 years old, MAZDA MX-5 owners tend to use this car less than the typical driver.

2005 MAZDA MX-5 Fuel Costs

The 1597cc 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 2005 MAZDA MX-5?

Total estimated annual running cost is £1,957 (£163/month), broken down as £1137 fuel, £265 road tax, £55 MOT, and £500 predicted repairs. Repair costs are moderate, reflecting the 74% pass rate. Keeping on top of servicing will help avoid surprises.

MAZDA MX-5 Reliability Trend

Newer MAZDA MX-5s show better MOT pass rates than older ones, with an average improvement of 12 percentage points.

Buying a Used 2005 MAZDA MX-5

At 21 years old, the MAZDA MX-5 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 2021 model has the highest pass rate at 96%. With 6,452 MOT tests in our data, there's strong statistical confidence in these figures.

Common Issues to Watch For

Based on the 2005 MAZDA MX-5's fuel type, age, and engine size, these are the most likely problem areas to check.

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.

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 2005 MAZDA MX-5 stacks up against similar cars for annual running costs, insurance, and tax.

Car	Pass Rate	Fuel/yr	Tax/yr	Insurance	Total/yr
MAZDA MX-5(2005)	74%	£1137	£265	Grp 12-25	£1957
FORD FOCUS(2007)	73%	£1137	£135	Grp 12-25	£1827-£130
BMW 3 SERIES(2007)	80%	£1327	£135	Grp 18-32	£1867-£90
MINI MINI(2007)	73%	£1137	£135	Grp 12-25	£1827-£130
RENAULT CLIO(2007)	68%	£1327	£135	Grp 18-32	£2217+£260

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.