2020 BMW 4 Series 2.0 420d M Sport

Overview

• Make: BMW
• Model: 4 Series
• Trim: M Sport
• Version: 2.0 420d M Sport Auto RWD Euro 6 (s/s) 2dr (187 bhp)
• Year: 2020
• Mileage: 57,500 miles
• Fuel: Diesel
• Body: Coupe, 2 doors, 4 seats
• Engine: 2.0 litres, 187 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: Blue
• CO2: 124 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2020 BMW 4 Series M Sport has covered 57,500 miles, around 14,400 more miles than is typical for its age. Its asking price of £17,490 is £1,101 above the AskCar estimate of £16,389. To work out the AskCar estimate, we analyse UK dealer adverts for 1,833 BMW 4 Series cars across different ages and specifications. The dealer may accept less: this car has been on sale for at least 161 days, and its asking price has been cut by £1,500. We checked its advertised mileage against the government's MOT record, and they match. It is for sale at Spa Motors Mid Wales in Brecon. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 5 November 2026.

How we estimate prices and check cars

Price

Fair price: £1,101 (6%) over the AskCar estimate of £16,389.

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 1,833 priced BMW 4 Series adverts across different ages and specifications, as of 5 November 2026.

A 2020 BMW 4 Series with the 2.0 diesel engine is typically advertised at £19,400: the median of the 38 for sale on AskCar, as of 5 November 2026.

Time on sale

The dealer may accept less. This 2020 BMW 4 Series has been on sale for at least 161 days, and its asking price has been cut by £1,500. About 6 in 10 of 2020 BMW 4 Series cars are gone from sale within a month of being advertised: 43 of the 78 first advertised between 10 July 2026 and 2 October 2026.

Price history

AskCar first saw this advert on 28 May 2026 at £18,990. Its asking price is now £17,490, £1,500 less. The latest price cut was seen on 8 October 2026.

Price changes recorded:

• 29 May 2026: £18,990
• 2 July 2026: £17,990
• 8 October 2026: £17,490

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 5 November 2026: valid until 10 December 2026.

It has had 4 MOTs. The latest, on 3 December 2025, passed.

Advisories at the latest test: windscreen damaged but not adversely affecting driver's view; nearside rear tyre has a cut but not deep enough to reach the ply or cords.

Mileage at that test: 53,221 miles, which matches the advertised 57,500 miles.

Advertised mileage is about 14,400 miles higher than the median mileage of a 2020 BMW 4 Series on AskCar.

Similar cars

8 other 2020 BMW 4 Series M Sport 2.0 diesel automatic coupes are for sale at UK dealers, from £13,899 to £21,995, as of 5 November 2026.

The 3 closest to this car in mileage:

• 2020 BMW 4 Series M Sport, 2.0 diesel coupe, blue. Mileage: 56,500 miles. Price: £21,995, £4,505 more than this car. Dealer: Grayswood Cars in Haslemere. AskCar page: https://askcar.co.uk/car/bmw-4-series-2020-7a160effa96a
• 2020 BMW 4 Series M Sport, 2.0 diesel coupe, grey. Mileage: 52,196 miles. Price: £14,100, £3,390 less than this car. Dealer: Car Planet Watford in Watford. AskCar page: https://askcar.co.uk/car/bmw-4-series-2020-e6cde8d9d59e
• 2020 BMW 4 Series M Sport, 2.0 diesel coupe, black. Mileage: 67,000 miles. Price: £20,990, £3,500 more than this car. Dealer: Dawn Motors in Canterbury. AskCar page: https://askcar.co.uk/car/bmw-4-series-2020-89992eb22603

• The nearest: 2020 BMW 4 Series M Sport, 2.0 diesel coupe, black, 110 miles from this car. Mileage: 47,070 miles. Price: £16,499, £991 less than this car. Dealer: cinch Bellevue in Hook. AskCar page: https://askcar.co.uk/car/bmw-4-series-2020-8d62982a9969