Mazda 6 (2015)

Estimated running costs and MOT pass rates from 11,898 MOT tests in 2024.

Annual Cost

£2,361

£197/month

MOT Pass Rate

82%

Good

Road Tax

£325

Estimated/year

Est. Insurance

Grp 18-32

1998cc Petrol

Solid Option

82% pass rate, £2,361/year to run. Close to the average across all models.

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Petrol1998cc11 years old11,898 tests88k miles avg

Annual Running Costs

Fuel (Petrol, 1998cc)

~36 mpg

£1,631

Road Tax

Estimated CO2 band

£325

MOT Test

£55

Predicted Repairs

£350

Total per year£2,361

Per month£197/mo

Per week£45/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

82% MOT pass rate(Good)

0%All-model avg: 82%100%

Good reliability. Occasional issues but generally solid. That's close to the average of 82% across all models in our data.

82% of MOT tests on Mazda 6s from 2015 ended in a pass in 2024, when they were about 9 years old. That's based on 11,898 tests across the UK, retests included. The average mileage recorded at those tests was 88,374 miles.

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How Does It Compare?

Rank among 2015 models351st of 515(bottom half)

Rank among Mazda models221st of 459(top half)

vs average of all models+0%(82% avg)

vs 2015 models average-1%(83% avg)

vs Mazda average+1%(81% avg)

Mileage Analysis

88,374

Average miles

66,600

Expected for age

The average 2015 Mazda 6 had 88,374 miles on the clock at its 2024 MOT, which is above the expected 66,600 miles for a 9-year-old car. Higher-mileage cars often have more motorway miles, which is generally less harmful than stop-start urban driving.

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Best Year to Buy?

Of the years with at least 100 tests, the 2020 model has the highest MOT pass rate at 94%, while the 2002 model has the lowest at 54%. The 2015 scores 82%. Newer cars usually pass more often simply because they are younger, so compare years of a similar age.

Mazda 6 by Year

Year	Pass Rate	Tests	Avg Mileage
2021	93%	118	26,540 mi
2020	94%	1,786	31,783 mi
2019	91%	7,381	44,030 mi
2018	89%	5,151	55,840 mi
2017	87%	7,764	68,812 mi
2016	84%	11,771	78,854 mi
2015	82%	11,898	88,374 mi
2014	80%	11,144	97,838 mi
2013	80%	7,682	103,079 mi
2012	75%	5,149	103,925 mi
2011	74%	7,535	117,021 mi
2010	73%	9,673	121,783 mi
2009	73%	7,396	124,353 mi
2008	71%	6,498	124,138 mi
2007	68%	4,401	109,611 mi
2006	69%	2,430	105,119 mi
2005	64%	1,596	100,805 mi
2004	62%	763	99,968 mi
2003	63%	356	98,803 mi
2002	54%	140	98,087 mi

Similar Cars to Consider

Ford Focus

2013 · 1596cc Petrol

£2,228/year

78%

-4%

Nissan Qashqai

2013 · 1600cc Petrol

£2,228/year

72%

-10%

BMW 3 Series

2015 · 1499cc Petrol

£2,078/year

88%

+6%

Mercedes C

2014 · 1595cc Petrol

£2,078/year

85%

+3%

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About the 2015 Mazda 6

The 2015 Mazda 6 is a family car. Our records list a 1998cc petrol engine, though engines vary between versions. 11,898 MOT tests were recorded on this model in 2024, making it one of the most commonly tested models on UK roads. Among all models from 2015, the average MOT pass rate is 83%, and this model falls short of that benchmark.

With an average of 88,374 miles recorded at its 2024 MOT tests, Mazda 6 owners cover more miles than the average driver.

2015 Mazda 6 Fuel Costs

The 1998cc petrol engine offers a reasonable balance between performance and economy. Expect around 36 mpg in mixed driving, which works out to roughly £1,631 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 2015 Mazda 6?

Total estimated annual running cost is £2,361 (£197/month), broken down as £1,631 fuel, £325 road tax, £55 MOT, and £350 predicted repairs. Repair costs are moderate, reflecting the 82% pass rate. Keeping on top of servicing will help avoid surprises.

Mazda 6 Reliability Trend

Newer Mazda 6s pass their MOT more often than older ones, by 18 percentage points on average, which is mostly down to age and wear.

Buying a Used 2015 Mazda 6

At 11 years old, the Mazda 6 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 2020 model has the highest pass rate at 94%. With 11,898 MOT tests in our data, there's strong statistical confidence in these figures.

What the 2015 Mazda 6 Fails Its MOT On

Share of the 1,821 MOT tests on the 2015 Mazda 6 that failed at the first attempt in 2025, next to all cars and vans of the same age.

Suspension50%
Same age: 32% (fails on this more often)
Brakes23%
Same age: 21%
Lights and electrics19%
Same age: 32% (fails on this less often)
Tyres18%
Same age: 25% (fails on this less often)

DVSA anonymised MOT data for 2025; a test that failed on two areas counts in both. How we count it · Mazda 6 reliability, common problems and years to avoid

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.

Timing Chain / Belt

Watch out

At 11 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.

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

Medium risk

With an average of 88k 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.

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 2015 Mazda 6 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 6(2015)	82%	£1,631	£325	Grp 18-32	£2,361
Ford Focus(2013)	78%	£1,398	£275	Grp 12-25	£2,228-£133
Nissan Qashqai(2013)	72%	£1,398	£275	Grp 12-25	£2,228-£133
BMW 3 Series(2015)	88%	£1,398	£275	Grp 12-25	£2,078-£283
Mercedes C(2014)	85%	£1,398	£275	Grp 12-25	£2,078-£283

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 2015 Mazda 6

Is the 2015 Mazda 6 reliable?

Good reliability. Occasional issues but generally solid. 82% of MOT tests on 2015 Mazda 6s ended in a pass, from 11,898 tests (DVSA MOT data for tests in 2024, retests included). That's level with the average of 82% across all models in the same data.

How much does a 2015 Mazda 6 cost to run?

Our estimate is £2,361 a year (£197 a month): £1,631 fuel, £325 road tax, £55 MOT and £350 predicted repairs, based on 7,400 miles a year. Insurance is not included.

What is the MOT pass rate for a 2015 Mazda 6?

82% of 11,898 MOT tests on the 2015 Mazda 6 ended in a pass (DVSA MOT data for tests in 2024, retests included). That ranks it 351st of 515 models first registered in 2015 (bottom half).

Which year Mazda 6 has the best MOT pass rate?

Of the years with at least 100 tests, the 2020 Mazda 6 has the highest MOT pass rate at 94% and the 2002 the lowest at 54%. Newer cars usually pass more often simply because they are younger and have done fewer miles.

What is the average mileage for a 2015 Mazda 6?

The average mileage recorded at MOT tests on the 2015 Mazda 6 is 88,374 miles, which is above the expected 66,600 miles for a 9-year-old car. Higher-mileage cars often have more motorway miles, which is generally less harmful than stop-start urban driving.