2020 BMW 4 Series 2.0 420i M Sport

Overview

• Make: BMW
• Model: 4 Series
• Trim: M Sport
• Version: 2.0 420i M Sport [Tech/Pro Pack] Auto RWD Euro 6 2dr Step (181 bhp)
• Year: 2020
• Mileage: 65,356 miles
• Fuel: Petrol
• Body: Coupe, 2 doors, 4 seats
• Engine: 2.0 litres, 181 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: Blue
• CO2: 144 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2020 BMW 4 Series M Sport is advertised with 65,356 miles, approximately 22,900 above the typical mileage for its age. Its asking price of £20,199 is £1,711 above the AskCar estimate of £18,488. The AskCar estimate uses UK dealer asking prices, including 1,787 BMW 4 Series adverts, and accounts for the car’s age, mileage and specification. We first recorded this advert 50 days ago, and its asking price has since fallen by £1,450. Its advertised mileage matches the government's MOT record. 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 2 November 2026.

How we estimate prices and check cars

Price

Above the going rate: £1,711 (9%) over the AskCar estimate of £18,488.

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 1,787 priced BMW 4 Series adverts across different ages and specifications, as of 2 November 2026.

A 2020 BMW 4 Series with the 2.0 petrol engine is typically advertised at £19,500: the median of the 37 for sale on AskCar, as of 2 November 2026.

Time on sale

This 2020 BMW 4 Series has been on sale for at least 50 days.

Price history

AskCar first saw this advert on 13 September 2026 at £21,649. Its asking price is now £20,199, £1,450 less. The latest price cut was seen on 17 October 2026.

Price changes recorded:

• 13 September 2026: £21,649
• 15 September 2026: £21,199
• 22 September 2026: £20,599
• 3 October 2026: £20,499
• 17 October 2026: £20,199

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: valid until 10 September 2027.

It failed its MOT on 24 August 2026 (nearside front tyre tread depth below requirements of 1.6mm) and passed 18 days later, on 11 September 2026.

There were no advisories at the latest test.

Mileage at that test: 65,355 miles, which matches the advertised 65,356 miles.

Advertised mileage is about 22,900 miles higher than the median mileage of a 2020 BMW 4 Series on AskCar.

Similar cars

14 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 2 November 2026.

The 3 closest to this car in mileage:

• 2020 BMW 4 Series M Sport, 2.0 petrol coupe, blue. Mileage: 63,000 miles. Price: £14,790, £5,409 less than this car. Dealer: Dawn Motors in Canterbury. AskCar page: https://askcar.co.uk/car/bmw-4-series-2020-bb099ef14ad0
• 2020 BMW 4 Series M Sport, 2.0 petrol coupe, blue. Mileage: 70,800 miles. Price: £20,495, £296 more than this car. Dealer: Motorhouse Plumtree in Nottingham. AskCar page: https://askcar.co.uk/car/bmw-4-series-2020-4fd2b48ceaf2
• 2020 BMW 4 Series M Sport, 2.0 petrol coupe, black. Mileage: 56,510 miles. Price: £15,450, £4,749 less than this car. Dealer: Perfect Car Company in Shrewsbury. AskCar page: https://askcar.co.uk/car/bmw-4-series-2020-e8532209a7e3

• The nearest: 2020 BMW 4 Series M Sport, 2.0 petrol coupe, silver, under a mile from this car. Mileage: 36,373 miles. Price: £17,999, £2,200 less than this car. Dealer: cinch Corby in Corby. AskCar page: https://askcar.co.uk/car/bmw-4-series-2020-873241c52bd2