MINI ONE (2018)
Running costs, common problems, and reliability data based on 2,625 real MOT tests in 2024.
MOT Pass Rate
92%
Total Tests (2024)
2,625
Avg Mileage
35,237 mi
Est. Annual Cost
£1,582
Is the 2018 MINI ONE reliable?
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 6 years old, 92% of MINI ONEs from 2018 passed their MOT first time in 2024. That's based on 2,625 tests across the UK. The average mileage at this age is 35,237 miles.
How does the 2018 MINI ONE compare?
Mileage Analysis
The average 2018 MINI ONE has 35,237 miles on the clock, which is below the expected 44,400 miles for a 6-year-old car. This suggests lighter use than average, which generally means less wear on major components.
Best year to buy a MINI ONE?
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%.
How much does a 2018 MINI ONE cost to run?
Based on 7,400 miles/year (UK average), current fuel prices, and repair likelihood from MOT pass rate data. Insurance not included.
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 |
Checking a specific MINI ONE?
Enter the reg plate to see its individual MOT history, mileage verification, and predicted costs.
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 2024, 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 6 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 £1,582 (£132/month), broken down as £1137 fuel, £190 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 6 years old, the MINI ONE offers good value with plenty of life remaining. Most manufacturer warranties will have expired, so a pre-purchase inspection is worth the cost. If you're flexible on year, the 2020 model has the highest pass rate at 94%.
Alternatives to the 2018 MINI ONE
The MINI ONE is actually the most reliable option among similar petrol small family cars from this era. Here are comparable petrol cars with similar engines:
- VAUXHALL CORSA (2016) 81% pass rate (-11%) from 133,045 tests
- FORD FOCUS (2016) 87% pass rate (-5%) from 109,880 tests
- NISSAN QASHQAI (2017) 86% pass rate (-6%) from 100,176 tests
- VAUXHALL ASTRA (2016) 85% pass rate (-7%) from 92,988 tests