Is the 2018 MINI ONE reliable?

Excellent reliability. Very few MOT failures. 92% of MINI ONEs from 2018 passed their MOT first time in 2026, based on 2,625 tests. That's 10 points above the national average of 82%.

How much does a 2018 MINI ONE cost to run?

Estimated annual running cost is £1,587 (£132/month), including £1137 fuel, £195 road tax, £55 MOT, and £200 predicted repairs.

What is the MOT pass rate for a 2018 MINI ONE?

The 2018 MINI ONE has a 92% MOT pass rate based on 2,625 tests in 2026. This ranks 232 out of 649 cars from 2018.

Which year MINI ONE is most reliable?

The 2020 MINI ONE has the highest MOT pass rate at 94%. The least reliable year is 2003 at 67%.

MINI ONE (2018)

Q: What is the average mileage for a 2018 MINI ONE?

The average mileage for a 2018 MINI ONE is 35,237 miles, which is below the expected 59,200 miles for a 8-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 2,625 real MOT tests.

Annual Cost

£1,587

£132/month

MOT Pass Rate

92%

Excellent

Road Tax

£195

Flat rate/year

Insurance

Grp 12-25

1499cc Petrol

Great Choice

92% pass rate, £1587/year to run. 10 points above average.

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Petrol1499cc8 years old2,625 tests35k miles avg

Annual Running Costs

Fuel (Petrol, 1499cc)

~42 mpg

£1,137

Road Tax

Flat rate (post-2017)

£195

MOT Test

£55

Predicted Repairs

Low estimate due to excellent reliability

£200

Total per year£1,587

Per month£132/mo

Per week£31/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

92% MOT pass rate(Excellent)

0%National avg: 82%100%

Excellent reliability. Very few MOT failures. That's 10 points above the national average of 82%. It also outperforms the MINI brand average of 84%.

At 8 years old, 92% of MINI ONEs from 2018 passed their MOT first time in 2026. That's based on 2,625 tests across the UK. The average mileage at this age is 35,237 miles.

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How Does It Compare?

Rank among 2018 cars232th of 649(top 36%)

Rank among MINI models57th of 341(top 17%)

vs national average+10%(82% avg)

vs 2018 cars average+3%(89% avg)

vs MINI average+8%(84% avg)

Mileage Analysis

35,237

Average miles

59,200

Expected for age

The average 2018 MINI ONE has 35,237 miles on the clock, which is below the expected 59,200 miles for a 8-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 2020 model with a 94% MOT pass rate, while the 2003 model has the lowest at 67%. The 2018 sits between the two at 92%.

MINI ONE by Year

Year	Pass Rate	Tests	Avg Mileage
2022	94%	138	20,160 mi
2021	93%	2,356	21,212 mi
2020	94%	1,884	24,926 mi
2019	91%	2,504	31,716 mi
2018	92%	2,625	35,237 mi
2017	91%	9,126	44,787 mi
2016	90%	14,249	52,236 mi
2015	89%	18,016	58,665 mi
2014	88%	11,021	66,312 mi
2013	84%	11,674	69,388 mi
2012	84%	6,640	73,564 mi
2011	79%	1,416	81,305 mi
2010	79%	844	83,055 mi
2009	71%	624	81,764 mi
2008	69%	659	90,766 mi
2007	68%	587	85,270 mi
2006	74%	382	98,556 mi
2005	72%	436	97,952 mi
2004	68%	348	101,925 mi
2003	67%	232	104,829 mi
2002	72%	109	113,107 mi

Similar Cars to Consider

VAUXHALL CORSA

2016 · 1398cc Petrol

£1,572/year

81%

-11%

FORD FOCUS

2016 · 1596cc Petrol

£1,677/year

87%

-5%

NISSAN QASHQAI

2017 · 1200cc Petrol

£1,550/year

86%

-6%

VAUXHALL ASTRA

2016 · 999cc Petrol

£1,390/year

85%

-7%

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About the 2018 MINI ONE

The 2018 MINI ONE is a small family car with a 1499cc petrol engine. 2,625 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 beats that benchmark.

With an average of 35,237 miles at 8 years old, MINI ONE owners tend to use this car less than the typical driver.

2018 MINI ONE Fuel Costs

The 1499cc 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 2018 MINI ONE?

Total estimated annual running cost is £1,587 (£132/month), broken down as £1137 fuel, £195 road tax, £55 MOT, and £200 predicted repairs. The low repair estimate reflects the excellent 92% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.

MINI ONE Reliability Trend

Newer MINI ONEs show better MOT pass rates than older ones, with an average improvement of 18 percentage points.

Buying a Used 2018 MINI ONE

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%.

Common Issues to Watch For

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

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 MINI ONE stacks up against similar cars for annual running costs, insurance, and tax.

Car	Pass Rate	Fuel/yr	Tax/yr	Insurance	Total/yr
MINI ONE(2018)	92%	£1137	£195	Grp 12-25	£1587
VAUXHALL CORSA(2016)	81%	£1137	£30	Grp 8-20	£1572-£15
FORD FOCUS(2016)	87%	£1137	£135	Grp 12-25	£1677+£90
NISSAN QASHQAI(2017)	86%	£955	£190	Grp 5-15	£1550-£37
VAUXHALL ASTRA(2016)	85%	£955	£30	Grp 1-8	£1390-£197

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.