How much does a 2018 MAZDA 6 cost to run?

Estimated annual running cost is £1,927 (£161/month), including £1327 fuel, £195 road tax, £55 MOT, and £350 predicted repairs.

What is the MOT pass rate for a 2018 MAZDA 6?

The 2018 MAZDA 6 has a 89% MOT pass rate based on 5,151 tests in 2026. This ranks 402 out of 649 cars from 2018.

Which year MAZDA 6 is most reliable?

The 2020 MAZDA 6 has the highest MOT pass rate at 94%. The least reliable year is 2002 at 54%.

What is the average mileage for a 2018 MAZDA 6?

The average mileage for a 2018 MAZDA 6 is 55,840 miles, which is in line with the expected 59,200 miles for a 8-year-old car, suggesting normal everyday use.

MAZDA 6 (2018)

Q: Is the 2018 MAZDA 6 reliable?

Good reliability. Occasional issues but generally solid. 89% of MAZDA 6s from 2018 passed their MOT first time in 2026, based on 5,151 tests. That's 7 points above the national average of 82%.

Running costs, reliability data, and common problems from 5,151 real MOT tests.

Annual Cost

£1,927

£161/month

MOT Pass Rate

89%

Good

Road Tax

£195

Flat rate/year

Insurance

Grp 18-32

1998cc Petrol

Solid Option

89% pass rate, £1927/year to run. 7 points above average.

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Petrol1998cc8 years old5,151 tests56k miles avg

Annual Running Costs

Fuel (Petrol, 1998cc)

~36 mpg

£1,327

Road Tax

Flat rate (post-2017)

£195

MOT Test

£55

Predicted Repairs

£350

Total per year£1,927

Per month£161/mo

Per week£37/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

89% MOT pass rate(Good)

0%National avg: 82%100%

Good reliability. Occasional issues but generally solid. That's 7 points above the national average of 82%. It also outperforms the MAZDA brand average of 81%.

At 8 years old, 89% of MAZDA 6s from 2018 passed their MOT first time in 2026. That's based on 5,151 tests across the UK. The average mileage at this age is 55,840 miles.

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How Does It Compare?

Rank among 2018 cars402th of 649(top 62%)

Rank among MAZDA models177th of 483(top 37%)

vs national average+7%(82% avg)

vs 2018 cars average+0%(89% avg)

vs MAZDA average+8%(81% avg)

Mileage Analysis

55,840

Average miles

59,200

Expected for age

The average 2018 MAZDA 6 has 55,840 miles on the clock, which is in line with the expected 59,200 miles for a 8-year-old car, suggesting normal everyday use.

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Best Year to Buy?

The most reliable year is the 2020 model with a 94% MOT pass rate, while the 2002 model has the lowest at 54%. The 2018 sits between the two at 89%.

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

2016 · 1596cc Petrol

£1,677/year

87%

-2%

VOLKSWAGEN GOLF

2019 · 1498cc Petrol

£1,582/year

92%

+3%

FORD KUGA

2018 · 1499cc Petrol

£1,582/year

90%

+1%

MINI COOPER

2018 · 1499cc Petrol

£1,582/year

92%

+3%

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About the 2018 MAZDA 6

The 2018 MAZDA 6 is a family car with a 1998cc petrol engine. 5,151 of these vehicles were MOT tested in 2026, making it a reasonably common sight on UK roads. Among all cars from 2018, the average MOT pass rate is 89%, and this model falls short of that benchmark.

With an average of 55,840 miles at 8 years old, MAZDA 6 owners drive about as much as the UK average.

2018 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 £1,327 per year at current petrol prices of 142p per litre (based on 7,400 miles per year).

What does it cost to own a 2018 MAZDA 6?

Total estimated annual running cost is £1,927 (£161/month), broken down as £1327 fuel, £195 road tax, £55 MOT, and £350 predicted repairs. Repair costs are moderate, reflecting the 89% pass rate. Keeping on top of servicing will help avoid surprises.

MAZDA 6 Reliability Trend

Newer MAZDA 6s show better MOT pass rates than older ones, with an average improvement of 18 percentage points.

Buying a Used 2018 MAZDA 6

At 8 years old, this is a solid used buy if you find one with good service history. Depreciation has levelled off, so you won't lose much more value. Focus on condition over mileage. If you're flexible on year, the 2020 model has the highest pass rate at 94%. With 5,151 MOT tests in our data, there's strong statistical confidence in these figures.

Common Issues to Watch For

Based on the 2018 MAZDA 6's fuel type, age, and engine size, these are the most likely problem areas to check.

Timing Chain / Belt

Watch out

At 8 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.

Suspension Wear

Medium risk

Shock absorbers, springs, and anti-roll bar links typically need attention around this age. Listen for clunks over bumps and check for uneven tyre wear.

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 2018 MAZDA 6 stacks up against similar cars for annual running costs, insurance, and tax.

Car	Pass Rate	Fuel/yr	Tax/yr	Insurance	Total/yr
MAZDA 6(2018)	89%	£1327	£195	Grp 18-32	£1927
FORD FOCUS(2016)	87%	£1137	£135	Grp 12-25	£1677-£250
VOLKSWAGEN GOLF(2019)	92%	£1137	£190	Grp 12-25	£1582-£345
FORD KUGA(2018)	90%	£1137	£190	Grp 12-25	£1582-£345
MINI COOPER(2018)	92%	£1137	£190	Grp 12-25	£1582-£345

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.