2020 BMW 4 Series 3.0 430d M Sport

Overview

• Make: BMW
• Model: 4 Series
• Trim: M Sport
• Version: 3.0 430d M Sport Auto RWD Euro 6 2dr (Professional Media) (254 bhp)
• Year: 2020
• Mileage: 22,766 miles
• Fuel: Diesel
• Body: Convertible, 2 doors, 4 seats
• Engine: 3.0 litres, 254 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: Blue
• CO2: 180 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2020 BMW 4 Series M Sport has covered 22,766 miles, around 19,100 fewer miles than is typical for its age. Priced at £21,495, it is advertised £691 below the AskCar estimate of £22,186. The AskCar estimate uses 1,814 UK dealer adverts for the BMW 4 Series, with adjustments for age, mileage, trim, engine and other specifications. We first saw this car advertised 52 days ago. Its asking price has since fallen by £500. According to the government's MOT record, its advertised mileage is consistent with the latest test. It is advertised by Mark Kessell Cars in Newquay. 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: £691 (3%) under the AskCar estimate of £22,186.

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

This 2020 BMW 4 Series has been on sale for at least 52 days.

Price history

AskCar first saw this advert on 13 September 2026 at £21,995. Its asking price is now £21,495, £500 less. The latest price cut was seen on 31 October 2026.

Price changes recorded:

• 13 September 2026: £21,995
• 31 October 2026: £21,495

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 4 November 2026: valid until 6 July 2027.

It failed its MOT on 17 June 2026 (engine MIL inoperative or indicates a malfunction; nearside front tyre has a lump, caused by separation or partial failure of its structure) and passed 20 days later, on 7 July 2026.

There were no advisories at the latest test.

Mileage at that test: 22,565 miles, which matches the advertised 22,766 miles.

Advertised mileage is about 19,100 miles lower 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, black. Mileage: 26,507 miles. Price: £23,771, £2,276 more than this car. Dealer: Vindis Group Three10 Automotive in St Ives. AskCar page: https://askcar.co.uk/car/bmw-4-series-2020-8181065911a2
• 2020 BMW 4 Series M Sport, 3.0 diesel convertible, black. Mileage: 43,100 miles. Price: £22,499, £1,004 more than this car. Dealer: Approved Cars & Finance Approved Cars in East Peckham. AskCar page: https://askcar.co.uk/car/bmw-4-series-2020-dd29089a2be0
• 2020 BMW 4 Series M Sport, 3.0 diesel convertible, red. Mileage: 49,120 miles. Price: £18,395, £3,100 less than this car. Dealer: V12 Sports & Classics Ltd -Worksop in Worksop. AskCar page: https://askcar.co.uk/car/bmw-4-series-2020-1f49ad30acfd

• The nearest: 2020 BMW 4 Series M Sport, 3.0 diesel convertible, black, 159 miles from this car. Mileage: 68,400 miles. Price: £16,990, £4,505 less than this car. Dealer: Nexa Motor Group in Southampton. AskCar page: https://askcar.co.uk/car/bmw-4-series-2020-8cb43caac410