MINI Convertible reliability, MPG and running costs
Figures updated
The MINI Convertible is a car. In 2024 MOT tests it scored 113 for reliability (100 is average), ranking 186 of 442, and 30.9% failed first time against a UK average of 28.5%. Its most common MOT failure is position lamp (7.8% of tests).
Ranked 186 of 442 cars in the 2024 MOT Reliability League
In 2024, 2,777 MINI Convertibles aged 3 to 20 had an MOT and 30.9% failed first time (UK average 28.5%). Taking age and mileage into account, the MINI Convertible is 12% less likely to fail than the average car of the same age and mileage.
First-time fail rate
30.9%
UK 28.5%
Fail rate at 3 years
–
UK 12.7%
Average miles a year
6,200
Typical age at test: 13 years
MINI Convertible MOT failure rate by age
Most common MINI Convertible MOT faults
- Position lamp: not working7.8% of tests
- Wipers: does not clear the windscreen effectively2.6% of tests
- Stop lamp: not working2.0% of tests
- Condition: has a bulge, caused by separation or partial failure of its structure1.7% of tests
- Tread depth: tread depth below requirements of 1.6mm1.7% of tests
- Rear fog lamp: not working1.6% of tests
What the MINI Convertible fails on
| Area | Tests failing | vs similar cars |
|---|---|---|
| Lights and electrics | 15.7% | About average |
| Tyres | 7.6% | ▲ 1.1× as often |
| Brakes | 5.2% | ▼ 37% less often |
| Visibility | 5.0% | About average |
| Suspension | 4.0% | ▼ 69% less often |
| Exhaust and emissions | 3.5% | About average |
| Body and structure | 2.0% | ▼ 55% less often |
| Wheels | 0.7% | ▲ 1.5× as often |
| Seat belts and airbags | 0.6% | ▼ 42% less often |
| Steering | 0.4% | ▼ 83% less often |
What MPG does the MINI Convertible do?
Official economy for the MINI Convertible ranges from 32.1 to 74.3mpg across the 77 versions listed by the Vehicle Certification Agency (2008–2025). A typical petrol version manages 47.1mpg and a typical diesel 70.6mpg. Expect 10–15% less in real-world driving.
Work out a journey's fuel costHow much is road tax on a MINI Convertible?
Any MINI Convertible first registered from April 2017 pays the standard rate of £200 a year after its first year (2026/27 rates). A MINI Convertible registered between March 2001 and March 2017 is taxed on its CO2: £20 to £445 a year.
Work out tax for a specific carMINI Convertible specs and running costs
Official figures for 77 versions sold in the UK between 2008 and 2025.
Fuel types
Diesel, Petrol
Official economy
32.1–74.3 mpg
CO2
100–211 g/km
Power
163–231 PS
| Version | Fuel | Economy | CO2 | Car tax | Company car tax |
|---|---|---|---|---|---|
| MINI Cooper Convertible C Classic163 PS · A7 · listed 2025 | Petrol | 42.8 mpg | 147g | £200 | 35% |
| MINI Cooper Convertible C Exclusive163 PS · A7 · listed 2025 | Petrol | 42.8 mpg | 147g | £200 | 35% |
| MINI Cooper Convertible C Sport163 PS · A7 · listed 2025 | Petrol | 42.8 mpg | 148g | £200 | 35% |
| MINI Cooper Convertible S Classic204 PS · A7 · listed 2025 | Petrol | 42.8 mpg | 149g | £200 | 35% |
| MINI Cooper Convertible S Exclusive204 PS · A7 · listed 2025 | Petrol | 42.8 mpg | 149g | £200 | 35% |
| MINI Cooper Convertible S Sport204 PS · A7 · listed 2025 | Petrol | 42.8 mpg | 149g | £200 | 35% |
| MINI Cooper Convertible John Cooper Works231 PS · A7 · listed 2025 | Petrol | 39.7 mpg | 156g | £200 | 37% |
| Convertible F57, From March 2016 MINI Cooper D - 15'' & 16'' tyresM6 · listed 2018 | Diesel | 74.3 mpg | 100g | £200 | – |
| Convertible F57, From March 2016 MINI Cooper D - 15'' & 16'' tyresA6 · listed 2018 | Diesel | 72.4 mpg | 104g | £200 | – |
| Convertible F57, From March 2016 MINI Cooper D - 17'' & 18'' tyresM6 · listed 2018 | Diesel | 70.6 mpg | 105g | £200 | – |
| Convertible F57, From March 2016 MINI Cooper D - 17'' & 18'' tyresA6 · listed 2018 | Diesel | 68.9 mpg | 109g | £200 | – |
| Convertible F57, From March 2016 MINI Cooper - 15'' & 16'' tyresM6 · listed 2018 | Petrol | 57.6 mpg | 114g | £200 | – |
| Convertible F57, From March 2016 MINI Cooper - 15'' & 16'' tyresA6 · listed 2018 | Petrol | 55.4 mpg | 119g | £200 | – |
| Convertible F57, From March 2016 MINI Cooper - 17'' & 18'' tyresM6 · listed 2018 | Petrol | 55.4 mpg | 118g | £200 | – |
| Convertible F57, From March 2016 MINI Cooper - 17'' & 18'' tyresA6 · listed 2018 | Petrol | 53.3 mpg | 123g | £200 | – |
Economy and CO2 are official NEDC (before 2018) or WLTP figures. Car tax is the yearly rate at current rates for a car first registered in the year listed, before any expensive car supplement. Company car tax is the 2026/27 benefit-in-kind rate. Showing the 15 most recent of 77 versions.
What a MINI Convertible costs to fuel
- petrol, typical official 47.1mpg…
- diesel, typical official 70.6mpg…
Official figures are usually 10–15% better than real-world driving.
Work out a journey in a MINI ConvertibleBuying a used MINI Convertible?
Check the MOT history of the exact car: every result, advisory and mileage reading, free.
Other MINI models
Frequently asked questions
›Is the MINI Convertible reliable?
Its MOT record is better than average: the MINI Convertible is 12% less likely to fail than the average car of the same age and mileage, with a reliability score of 113 in our 2024 league (100 is average).
›What are common problems with the MINI Convertible?
The most common MOT fault is “Position lamp: not working”, found in 7.8% of tests.
›What MPG does the MINI Convertible do?
Official economy for the MINI Convertible ranges from 32.1 to 74.3mpg across the 77 versions listed by the Vehicle Certification Agency (2008–2025). A typical petrol version manages 47.1mpg and a typical diesel 70.6mpg. Expect 10–15% less in real-world driving.
›How much is road tax on a MINI Convertible?
Any MINI Convertible first registered from April 2017 pays the standard rate of £200 a year after its first year (2026/27 rates). A MINI Convertible registered between March 2001 and March 2017 is taxed on its CO2: £20 to £445 a year.
›How many MINI Convertibles fail their MOT?
30.9% of MINI Convertibles aged 3 to 20 failed their MOT first time in 2024.
Sources: DVSA anonymised MOT tests 2024, all versions of the MINI Convertible combined (Open Government Licence v3.0); official economy and CO2 from Vehicle Certification Agency data, © Crown copyright. VCA cannot accept liability for its accuracy. How we calculate the league.