Parkers overall rating: 4 out of 5 4.0

Miles per pound (mpp) Miles per pound (mpp)

Petrol engines 5.8 - 7.4 mpp
Low figures relate to the least economical version; high to the most economical. Based on WLTP combined fuel economy for versions of this car made since September 2017 only, and typical current fuel or electricity costs.

Fuel economy

Petrol engines 37.7 - 47.9 mpg
  • Convertible range is an all-petrol line-up
  • Cooper is the cheapest to run
  • Performance models aren’t too costly

How much is it going to cost to run?

The good news is that all three engines available in the Convertible are fairly fuel efficient.

In terms of fuel economy and emissions, it’s the Cooper that shines here. That's because it uses a three-cylinder 1.5-litre engine, whereas the Cooper S and John Cooper Works use larger four-cylinder 2.0-litre engines.

There's surprisingly little in it on paper. But with real-life experience we found the gap between the Cooper and Cooper S to be a bit larger than the numbers suggest in official testing.

MPG and CO2


  • 1.5-litre Cooper: 45.6-47.9mpg, 134-140g/km CO2
  • 2.0-litre Cooper S: 42.2-45.6mpg, 141-153g/km CO2
  • 2.0-litre John Cooper Works: 38.2-40.9mpg, 156-167g/km CO2

How reliable is it?

  • One recall for the MINI Convertible
  • Feels a solid and well-built small car
  • Should be very few concerns

All of the MINI Convertible’s mechanical and electrical components are shared with various models in the BMW Group, and overall the car feels very solid and well built, especially the premium interior.

There has only been one recall - to do with a steering gear tie rod fault.

Most issues will have all been sorted out as part of the recall. But if you're buying used it's worth checking.

Ongoing running costs

Road tax (12 months) £0 - £210
See tax rates for all versions
Insurance group 16 - 33
How much is it to insure?