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: 58,975 miles
• Fuel: Diesel
• Body: Convertible, 2 doors, 4 seats
• Engine: 3.0 litres, 309 bhp
• Gearbox: Automatic
• Drive: Four-wheel drive
• Colour: White
• CO2: 169 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 58,975 miles, this 2020 BMW 4 Series M Sport has covered about 15,900 more miles than other 2020 BMW 4 Series cars. Priced at £19,989, it is advertised £586 below the AskCar estimate of £20,575. To work out the AskCar estimate, we analyse UK dealer adverts for 1,826 BMW 4 Series cars across different ages and specifications. The dealer may accept less: this car has been on sale for at least 107 days, and its asking price has been cut by £3,000. According to the government's MOT record, its advertised mileage is consistent with the latest test. It is for sale at The Hertford Car Company in Bayford. 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: £586 (2%) under the AskCar estimate of £20,575.

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 3.0 diesel engine is typically advertised at £21,900: the median of the 20 for sale on AskCar, as of 6 November 2026.

Time on sale

The dealer may accept less. This 2020 BMW 4 Series has been on sale for at least 107 days, and its asking price has been cut by £3,000. About 6 in 10 of 2020 BMW 4 Series cars are gone from sale within a month of being advertised: 44 of the 79 first advertised between 10 July 2026 and 3 October 2026.

Price history

AskCar first saw this advert on 22 July 2026 at £22,989. Its asking price is now £19,989, £3,000 less. The latest price cut was seen on 5 November 2026.

Price changes recorded:

• 22 July 2026: £22,989
• 5 September 2026: £22,489
• 17 September 2026: £21,989
• 6 October 2026: £21,489
• 8 October 2026: £20,989
• 20 October 2026: £20,489
• 5 November 2026: £19,989

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 6 November 2026: valid until 16 April 2027.

It has had 4 MOTs. The latest, on 17 April 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 57,758 miles, which matches the advertised 58,975 miles.

Advertised mileage is about 15,900 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 £16,890 to £23,771, as of 6 November 2026.

The 3 closest to this car in mileage:

• 2020 BMW 4 Series M Sport, 3.0 diesel convertible, black. Mileage: 55,825 miles. Price: £20,990, £1,001 more than this car. Dealer: Desmond Eastwood Motors in Lisburn. AskCar page: https://askcar.co.uk/car/bmw-4-series-2020-c7135de71067
• 2020 BMW 4 Series M Sport, 3.0 diesel convertible, black. Mileage: 52,000 miles. Price: £21,780, £1,791 more 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: 50,000 miles. Price: £21,999, £2,010 more than this car. Dealer: A & S Cars in Bishop's Stortford. AskCar page: https://askcar.co.uk/car/bmw-4-series-2020-e985c2a56913