2020 BMW 4 Series 2.0 420i M Sport

Overview

• Make: BMW
• Model: 4 Series
• Trim: M Sport
• Version: 2.0 420i M Sport Auto RWD Euro 6 (s/s) 2dr (181 bhp)
• Year: 2020
• Mileage: 55,358 miles
• Fuel: Petrol
• Body: Coupe, 2 doors, 4 seats
• Engine: 2.0 litres, 181 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: Black
• CO2: 151 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2020 BMW 4 Series M Sport is advertised with 55,358 miles, approximately 11,900 above the typical mileage for its age. Its asking price of £20,950 is £1,558 above the AskCar estimate of £19,392. The AskCar estimate uses UK dealer asking prices, including 1,816 BMW 4 Series adverts, and accounts for the car’s age, mileage and specification. We have tracked this advert for 1 day. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Cotswold Bmw Cheltenham, based in Cheltenham. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 8 November 2026.

How we estimate prices and check cars

Price

Above the going rate: £1,558 (8%) over the AskCar estimate of £19,392.

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 1,816 priced BMW 4 Series adverts across different ages and specifications, as of 8 November 2026.

A 2020 BMW 4 Series with the 2.0 petrol engine is typically advertised at £19,600: the median of the 39 for sale on AskCar, as of 8 November 2026.

Time on sale

AskCar first saw this 2020 BMW 4 Series advertised 1 day ago. About 6 in 10 of 2020 BMW 4 Series cars are gone from sale within a month of being advertised: 44 of the 80 first advertised between 10 July 2026 and 5 October 2026.

Price history

AskCar first saw this advert on 7 November 2026 at £20,950. 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 8 November 2026: valid until 22 March 2027.

It has had 4 MOTs. The latest, on 18 March 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 46,598 miles, which matches the advertised 55,358 miles.

Advertised mileage is about 11,900 miles higher than the median mileage of a 2020 BMW 4 Series on AskCar.

Similar cars

15 other 2020 BMW 4 Series M Sport 2.0 petrol automatic coupes are for sale at UK dealers, from £15,450 to £53,950, as of 8 November 2026.

The 3 closest to this car in mileage:

• 2020 BMW 4 Series M Sport, 2.0 petrol coupe, black. Mileage: 56,510 miles. Price: £15,450, £5,500 less than this car. Dealer: Perfect Car Company in Shrewsbury. AskCar page: https://askcar.co.uk/car/bmw-4-series-2020-e8532209a7e3
• 2020 BMW 4 Series M Sport, 2.0 petrol coupe, black. Mileage: 48,681 miles. Price: £17,750, £3,200 less than this car. Dealer: Hilton Garage in Derby. AskCar page: https://askcar.co.uk/car/bmw-4-series-2020-7d30aaaf8af3
• 2020 BMW 4 Series M Sport, 2.0 petrol coupe, blue. Mileage: 65,356 miles. Price: £19,999, £951 less than this car. Dealer: cinch Corby in Corby. AskCar page: https://askcar.co.uk/car/bmw-4-series-2020-e21ef46b82c9