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: 43,100 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

This 2020 BMW 4 Series M Sport has covered 43,100 miles. Its asking price of £22,499 is £15 above the AskCar estimate of £22,484. The AskCar estimate uses UK dealer asking prices, including 1,814 BMW 4 Series adverts, and accounts for the car’s age, mileage and specification. We first recorded this car for sale 5 days ago. According to the government's MOT record, its advertised mileage is consistent with the latest test. It is advertised by Approved Cars & Finance Approved Cars in Tonbridge. 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: £15 (under 1%) over the AskCar estimate of £22,484.

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

AskCar first saw this 2020 BMW 4 Series advertised 5 days ago. 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 30 October 2026 at £22,499. Its asking price has not changed.

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 4 November 2026: valid until 22 November 2026.

It failed its MOT on 7 November 2025 (offside front outer tyre has a bulge, caused by separation or partial failure of its structure sidewall; nearside front brake disc in such a condition that it is seriously weakened) and passed 3 days later, on 10 November 2025.

There were no advisories at the latest test.

Mileage at that test: 33,218 miles, which matches the advertised 43,100 miles.

Advertised mileage is about 1,300 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, £4,104 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: 50,000 miles. Price: £21,999, £500 less than this car. Dealer: A & S Cars in Bishop's Stortford. AskCar page: https://askcar.co.uk/car/bmw-4-series-2020-e985c2a56913
• 2020 BMW 4 Series M Sport, 3.0 diesel convertible, black. Mileage: 52,000 miles. Price: £21,780, £719 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

• The nearest: 2020 BMW 4 Series M Sport, 3.0 diesel convertible, white, 43 miles from this car. Mileage: 58,975 miles. Price: £20,489, £2,010 less than this car. Dealer: The Hertford Car Company in Hertford. AskCar page: https://askcar.co.uk/car/bmw-4-series-2020-4ead0610929e