2020 MINI Convertible 2.0 Cooper S Sidewalk Edition

Overview

• Make: MINI
• Model: Convertible
• Trim: Cooper S Sidewalk Edition
• Version: 2.0 Cooper S Sidewalk Edition Steptronic FWD Euro 6 (s/s) 2dr (189 bhp)
• Year: 2020
• Mileage: 30,000 miles
• Fuel: Petrol
• Body: Convertible, 2 doors, 4 seats
• Engine: 2.0 litres, 189 bhp
• Gearbox: Automatic (Steptronic)
• Drive: Front-wheel drive
• Colour: Blue
• CO2: 149 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2020 MINI Convertible Cooper S Sidewalk Edition has covered 30,000 miles. The dealer is asking £18,000, which is £74 above the AskCar estimate of £17,926. To work out the AskCar estimate, we analyse UK dealer adverts for 1,037 MINI Convertible cars across different ages and specifications. This car was first seen in our listings data 1 day ago. We checked its advertised mileage against the government's MOT record, and they match. The seller is Sytner Cardiff MINI, based in Cardiff. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 4 November 2026.

How we estimate prices and check cars

Price

Fair price: £74 (under 1%) over the AskCar estimate of £17,926.

The AskCar estimate is our expected asking price for this car. It uses UK dealer asking prices, accounting for make, model, trim, version, age, mileage, fuel, gearbox, body type, driven wheels, engine size and power. It is an advertised price, not a confirmed sale price.

It draws on 1,037 priced MINI Convertible adverts across different ages and specifications, as of 4 November 2026.

A 2020 MINI Convertible with the 2.0 petrol engine is typically advertised at £17,100: the median of the 32 for sale on AskCar, as of 4 November 2026.

Time on sale

AskCar first saw this 2020 MINI Convertible advertised 1 day ago. About half of 2020 MINI Convertible cars are gone from sale within a month of being advertised: 38 of the 79 first advertised between 11 July 2026 and 1 October 2026.

Price history

AskCar first saw this advert on 3 November 2026 at £18,000. Its asking price has not changed.

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 4 November 2026: valid until 11 January 2027.

It has had 5 MOTs. The latest, on 16 December 2025, passed.

There were no advisories at the latest test.

Mileage at that test: 26,634 miles, which matches the advertised 30,000 miles.

Advertised mileage is about 1,600 miles higher than the median mileage of a 2020 MINI Convertible on AskCar.

Similar cars

3 other 2020 MINI Convertible Cooper S Sidewalk Edition 2.0 petrol automatic convertibles are for sale at UK dealers, from £15,999 to £19,590, as of 4 November 2026.

The 3 closest to this car in mileage:

• 2020 MINI Convertible Cooper S Sidewalk Edition, 2.0 petrol convertible, blue. Mileage: 26,550 miles. Price: £19,590, £1,590 more than this car. Dealer: Stratstone MINI Bury St Edmunds in Bury St Edmunds. AskCar page: https://askcar.co.uk/car/mini-convertible-2020-619774ba77c4
• 2020 MINI Convertible Cooper S Sidewalk Edition, 2.0 petrol convertible, blue. Mileage: 23,000 miles. Price: £18,688, £688 more than this car. Dealer: West Kent Motor Group Online in Sevenoaks. AskCar page: https://askcar.co.uk/car/mini-convertible-2020-496b55110d6a
• 2020 MINI Convertible Cooper S Sidewalk Edition, 2.0 petrol convertible, blue. Mileage: 37,662 miles. Price: £15,999, £2,001 less than this car. Dealer: Available Car Supermarket - Castle Donington in Castle Donington. AskCar page: https://askcar.co.uk/car/mini-convertible-2020-f6221d6ab1f0