2020 BMW M4 3.0 BiTurbo Competition

Overview

• Make: BMW
• Model: M4
• Trim: Competition
• Version: 3.0 BiTurbo GPF Competition DCT RWD Euro 6 (s/s) 2dr (444 bhp)
• Year: 2020
• Mileage: 40,700 miles
• Fuel: Petrol
• Body: Convertible, 2 doors, 4 seats
• Engine: 3.0 litres, 444 bhp
• Gearbox: Automatic (DCT)
• Drive: Rear-wheel drive
• Colour: Blue
• CO2: 217 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 40,700 miles on the clock, this 2020 BMW M4 Competition has done roughly 4,000 more miles than a typical 2020 BMW M4. The dealer is asking £30,950, which is £3,073 below the AskCar estimate of £34,023. To work out the AskCar estimate, we analyse UK dealer adverts for 738 BMW M4 cars across different ages and specifications. We first saw this car advertised 94 days ago. Its asking price has since fallen by £1,000. The seller is BJC Car Sales, based in Wimborne. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 2 November 2026.

How we estimate prices and check cars

Price

Good value: £3,073 (9%) under the AskCar estimate of £34,023.

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 738 priced BMW M4 adverts across different ages and specifications, as of 2 November 2026.

A 2020 BMW M4 with the 3.0 petrol engine is typically advertised at £35,000: the median of the 51 for sale on AskCar, as of 2 November 2026.

Time on sale

This 2020 BMW M4 has been on sale for at least 94 days.

Price history

AskCar first saw this advert on 31 July 2026 at £31,950. Its asking price is now £30,950, £1,000 less. The latest price cut was seen on 22 October 2026.

Price changes recorded:

• 31 July 2026: £31,950
• 16 August 2026: £32,950
• 22 August 2026: £31,950
• 25 August 2026: £32,950
• 2 September 2026: £31,950
• 20 September 2026: £30,950
• 27 September 2026: £31,950
• 20 October 2026: £30,950
• 22 October 2026: £30,000
• 28 October 2026: £30,950

Mileage and MOT

Advertised mileage is about 4,000 miles higher than the median mileage of a 2020 BMW M4 on AskCar.

Similar cars

2 other 2020 BMW M4 Competition 3.0 petrol automatic convertibles are for sale at UK dealers, from £31,000 to £35,995, as of 2 November 2026.

The 2 closest to this car in mileage:

• 2020 BMW M4 Competition, 3.0 petrol convertible, blue. Mileage: 32,968 miles. Price: £31,000, £50 more than this car. Dealer: Saxtons.co.uk in Chelmsford. AskCar page: https://askcar.co.uk/car/bmw-m4-2020-04a8c9a526ed
• 2020 BMW M4 Competition, 3.0 petrol convertible, orange. Mileage: 25,000 miles. Price: £35,995, £5,045 more than this car. Dealer: Christchurch Performance Cars in Christchurch and Poole) Christchurch (Bournemouth. AskCar page: https://askcar.co.uk/car/bmw-m4-2020-7aa224347ff3