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: 35,941 miles
• Fuel: Diesel
• Body: Convertible, 2 doors, 4 seats
• Engine: 2.0 litres, 187 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: White
• CO2: 124 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 35,941 miles, this 2020 BMW 4 Series M Sport has covered about 9,300 fewer miles than other 2020 BMW 4 Series cars. The AskCar estimate for this car is £18,874. It is priced at £19,604, which is £730 above that estimate. To work out the AskCar estimate, we analyse UK dealer adverts for 1,822 BMW 4 Series cars across different ages and specifications. We first recorded this advert 29 days ago, and its asking price has since fallen by £137. Its advertised mileage matches the government's MOT record. The seller is Vines of Redhill BMW, based in Salfords. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 12 November 2026.

How we estimate prices and check cars

Price

Fair price: £730 (3%) over the AskCar estimate of £18,874.

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 1,822 priced BMW 4 Series adverts across different ages and specifications, as of 12 November 2026.

A 2020 BMW 4 Series with the 2.0 diesel engine is typically advertised at £19,400: the median of the 40 for sale on AskCar, as of 12 November 2026.

Time on sale

This 2020 BMW 4 Series has been on sale for at least 29 days.

Price history

AskCar first saw this advert on 14 October 2026 at £19,741. Its asking price is now £19,604, £137 less. The latest price cut was seen on 3 November 2026.

Price changes recorded:

• 14 October 2026: £19,741
• 21 October 2026: £19,991
• 28 October 2026: £19,822
• 3 November 2026: £19,488
• 9 November 2026: £19,604

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 12 November 2026: valid until 8 July 2027.

It has had 6 MOTs. The latest, on 23 June 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 34,558 miles, which matches the advertised 35,941 miles.

Advertised mileage is about 9,300 miles lower than the median mileage of a 2020 BMW 4 Series on AskCar.

Similar cars

2 other 2020 BMW 4 Series M Sport 2.0 diesel automatic convertibles are for sale at UK dealers, from £17,720 to £19,990, as of 12 November 2026.

The 2 closest to this car in mileage:

• 2020 BMW 4 Series M Sport, 2.0 diesel convertible, black. Mileage: 30,335 miles. Price: £17,720, £1,884 less than this car. Dealer: Essex Car Company in Rainham. AskCar page: https://askcar.co.uk/car/bmw-4-series-2020-f12d37589276
• 2020 BMW 4 Series M Sport, 2.0 diesel convertible, white. Mileage: 27,700 miles. Price: £19,990, £386 more than this car. Dealer: Flc in Yiewsley. AskCar page: https://askcar.co.uk/car/bmw-4-series-2020-ad465198ff36