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: 27,700 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

This 2020 BMW 4 Series M Sport has covered 27,700 miles, around 15,400 fewer miles than is typical for its age. The AskCar estimate for this car is £19,293. It is priced at £19,990, which is £697 above that estimate. The AskCar estimate draws on 1,826 BMW 4 Series adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We first saw this car advertised 22 days ago. Its asking price has since fallen by £460. According to the government's MOT record, its advertised mileage is consistent with the latest test. You can find this car at Flc in Yiewsley. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 6 November 2026.

How we estimate prices and check cars

Price

Fair price: £697 (3%) over the AskCar estimate of £19,293.

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 1,826 priced BMW 4 Series adverts across different ages and specifications, as of 6 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 6 November 2026.

Time on sale

This 2020 BMW 4 Series has been on sale for at least 22 days.

Price history

AskCar first saw this advert on 15 October 2026 at £20,450. Its asking price is now £19,990, £460 less. The latest price cut was seen on 2 November 2026.

Price changes recorded:

• 15 October 2026: £20,450
• 1 November 2026: £20,250
• 2 November 2026: £19,990

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 6 November 2026: valid until 22 September 2027.

It has had 6 MOTs. The latest, on 14 September 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 27,631 miles, which matches the advertised 27,700 miles.

Advertised mileage is about 15,400 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 £19,488, as of 6 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, £2,270 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: 35,941 miles. Price: £19,488, £502 less than this car. Dealer: Vines of Redhill BMW in Redhill. AskCar page: https://askcar.co.uk/car/bmw-4-series-2020-87b2c413beb9