2020 BMW 4 Series 2.0 420i M Sport

Overview

• Make: BMW
• Model: 4 Series
• Trim: M Sport
• Version: 2.0 420i M Sport Auto 4WD Euro 6 2dr (Professional Media) (181 bhp)
• Year: 2020
• Mileage: 36,373 miles
• Fuel: Petrol
• Body: Coupe, 2 doors, 4 seats
• Engine: 2.0 litres, 181 bhp
• Gearbox: Automatic
• Drive: Four-wheel drive
• Colour: Silver
• CO2: 178 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2020 BMW 4 Series M Sport is advertised with 36,373 miles, approximately 5,500 below the typical mileage for its age. Its asking price of £17,999 is £1,435 below the AskCar estimate of £19,434. 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 81 days, and its asking price is down £684. According to the government's MOT record, its advertised mileage is consistent with the latest test. You can find this car at cinch Corby in North Northamptonshire. 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: £1,435 (7%) under the AskCar estimate of £19,434.

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 2.0 petrol engine is typically advertised at £19,500: the median of the 38 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 81 days, and its asking price has been cut by £684. 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 15 August 2026 at £18,683. Its asking price is now £17,999, £684 less. The latest price cut was seen on 22 October 2026.

Price changes recorded:

• 15 August 2026: £18,683
• 21 August 2026: £18,099
• 5 September 2026: £17,999
• 22 October 2026: £17,998
• 30 October 2026: £17,999

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 4 November 2026: valid until 11 August 2027.

It has had 5 MOTs. The latest, on 12 August 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 36,369 miles, which matches the advertised 36,373 miles.

Advertised mileage is about 5,500 miles lower than the median mileage of a 2020 BMW 4 Series on AskCar.

Similar cars

15 other 2020 BMW 4 Series M Sport 2.0 petrol automatic coupes are for sale at UK dealers, from £14,790 to £53,950, as of 4 November 2026.

The 3 closest to this car in mileage:

• 2020 BMW 4 Series M Sport, 2.0 petrol coupe, grey. Mileage: 36,589 miles. Price: £19,995, £1,996 more than this car. Dealer: Group 1 Farnborough BMW in Farnborough. AskCar page: https://askcar.co.uk/car/bmw-4-series-2020-61b99f000204
• 2020 BMW 4 Series M Sport, 2.0 petrol coupe, black. Mileage: 36,608 miles. Price: £18,260, £261 more than this car. Dealer: SKV Motors in Romford. AskCar page: https://askcar.co.uk/car/bmw-4-series-2020-4fd7204f8aed
• 2020 BMW 4 Series M Sport, 2.0 petrol coupe, blue. Mileage: 35,639 miles. Price: £24,495, £6,496 more than this car. Dealer: MINI UK at Barretts Canterbury in Canterbury. AskCar page: https://askcar.co.uk/car/bmw-4-series-2020-d5ad166b2bb0

• The nearest: 2020 BMW 4 Series M Sport, 2.0 petrol coupe, blue, under a mile from this car. Mileage: 65,356 miles. Price: £19,999, £2,000 more than this car. Dealer: cinch Corby in Corby. AskCar page: https://askcar.co.uk/car/bmw-4-series-2020-e21ef46b82c9