2020 BMW 4 Series 3.0 435d M Sport

Overview

• Make: BMW
• Model: 4 Series
• Trim: M Sport
• Version: 3.0 435d M Sport Auto 4WD Euro 6 (s/s) 2dr (309 bhp)
• Year: 2020
• Mileage: 50,000 miles
• Fuel: Diesel
• Body: Convertible, 2 doors, 4 seats
• Engine: 3.0 litres, 309 bhp
• Gearbox: Automatic
• Drive: Four-wheel drive
• Colour: Black
• CO2: 169 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 50,000 miles, this 2020 BMW 4 Series M Sport has covered about 8,200 more miles than other 2020 BMW 4 Series cars. Priced at £21,999, it is advertised £361 above the AskCar estimate of £21,638. To work out the AskCar estimate, we analyse UK dealer adverts for 1,814 BMW 4 Series cars across different ages and specifications. The dealer may accept less: this car has been on sale for at least 70 days, and its asking price has been cut by £1,351. Its advertised mileage matches the government's MOT record. You can find this car at A & S Cars in Bishop's Stortford. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 4 November 2026.

How we estimate prices and check cars

Price

Fair price: £361 (1%) over the AskCar estimate of £21,638.

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 1,814 priced BMW 4 Series adverts across different ages and specifications, as of 4 November 2026.

A 2020 BMW 4 Series with the 3.0 diesel engine is typically advertised at £21,800: the median of the 19 for sale on AskCar, as of 4 November 2026.

Time on sale

The dealer may accept less. This 2020 BMW 4 Series has been on sale for at least 70 days, and its asking price has been cut by £1,351. About half of 2020 BMW 4 Series cars are gone from sale within a month of being advertised: 41 of the 76 first advertised between 10 July 2026 and 1 October 2026.

Price history

AskCar first saw this advert on 26 August 2026 at £23,350. Its asking price is now £21,999, £1,351 less. The latest price cut was seen on 10 October 2026.

Price changes recorded:

• 26 August 2026: £23,350
• 28 August 2026: £23,786
• 6 September 2026: £23,586
• 14 September 2026: £23,518
• 16 September 2026: £23,508
• 19 September 2026: £22,999
• 24 September 2026: £22,786
• 30 September 2026: £22,500
• 4 October 2026: £22,698
• 8 October 2026: £22,499
• 10 October 2026: £21,999

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 4 November 2026: valid until 30 January 2027.

It failed its MOT on 15 January 2026 (nearside front window excessively tinted but not adversely affecting driver's view; offside front window excessively tinted but not adversely affecting driver's view; nearside front outer tyre has ply or cords damaged; and 1 more) and passed 5 days later, on 20 January 2026.

Advisories at the latest test: nearside front window excessively tinted but not adversely affecting driver's view; offside front window excessively tinted but not adversely affecting driver's view; front headlamp has a product on the lens but not seriously reducing light output.

Mileage at that test: 50,092 miles, which matches the advertised 50,000 miles.

Advertised mileage is about 8,200 miles higher than the median mileage of a 2020 BMW 4 Series on AskCar.

Similar cars

8 other 2020 BMW 4 Series M Sport 3.0 diesel automatic convertibles are for sale at UK dealers, from £16,990 to £23,771, as of 4 November 2026.

The 3 closest to this car in mileage:

• 2020 BMW 4 Series M Sport, 3.0 diesel convertible, red. Mileage: 49,120 miles. Price: £18,395, £3,604 less than this car. Dealer: V12 Sports & Classics Ltd -Worksop in Worksop. AskCar page: https://askcar.co.uk/car/bmw-4-series-2020-1f49ad30acfd
• 2020 BMW 4 Series M Sport, 3.0 diesel convertible, black. Mileage: 52,000 miles. Price: £21,780, £219 less than this car. Dealer: MINI UK at Stratstone Milton Keynes in Milton Keynes. AskCar page: https://askcar.co.uk/car/bmw-4-series-2020-72852cef1e21
• 2020 BMW 4 Series M Sport, 3.0 diesel convertible, black. Mileage: 55,825 miles. Price: £20,990, £1,009 less than this car. Dealer: Desmond Eastwood Motors in Lisburn. AskCar page: https://askcar.co.uk/car/bmw-4-series-2020-c7135de71067

• The nearest: 2020 BMW 4 Series M Sport, 3.0 diesel convertible, white, 14 miles from this car. Mileage: 58,975 miles. Price: £20,489, £1,510 less than this car. Dealer: The Hertford Car Company in Hertford. AskCar page: https://askcar.co.uk/car/bmw-4-series-2020-4ead0610929e