2020 BMW 4 Series 2.0 420d M Sport

Overview

• Make: BMW
• Model: 4 Series
• Trim: M Sport
• Version: 2.0 420d M Sport Auto 4WD Euro 6 (s/s) 2dr (187 bhp)
• Year: 2020
• Mileage: 86,465 miles
• Fuel: Diesel
• Body: Coupe, 2 doors, 4 seats
• Engine: 2.0 litres, 187 bhp
• Gearbox: Automatic
• Drive: Four-wheel drive
• Colour: Blue
• CO2: 125 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2020 BMW 4 Series M Sport has covered 86,465 miles, around 43,400 more miles than is typical for its age. The dealer is asking £13,899, which is £685 below the AskCar estimate of £14,584. To work out the AskCar estimate, we analyse UK dealer adverts for 1,826 BMW 4 Series cars across different ages and specifications. We first saw this car advertised 9 days ago. Its asking price has since fallen by £400. The recorded MOT expired on 9 February 2026, so ask the dealer whether it has been renewed. Its advertised mileage matches the government's MOT record. The seller is Northumberland Motor Village, based in Alnwick. 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: £685 (4%) under the AskCar estimate of £14,584.

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 2.0 diesel engine is typically advertised at £19,400: the median of the 38 for sale on AskCar, as of 6 November 2026.

Time on sale

This 2020 BMW 4 Series has been on sale for at least 9 days.

Price history

AskCar first saw this advert on 28 October 2026 at £14,299. Its asking price is now £13,899, £400 less. The latest price cut was seen on 3 November 2026.

Price changes recorded:

• 28 October 2026: £14,299
• 3 November 2026: £13,899

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 6 November 2026: the latest record we hold ran out on 9 February 2026; ask the dealer for the current MOT.

It has had 4 MOTs. The latest, on 5 February 2025, passed.

Advisories at the latest test: central rear oil leak, but not excessive differential input shaft seal; nearside front tyre worn close to legal limit/worn on edge; offside front tyre worn close to legal limit/worn on edge.

Mileage at that test: 71,670 miles, which matches the advertised 86,465 miles.

Advertised mileage is about 43,400 miles higher than the median mileage of a 2020 BMW 4 Series on AskCar.

Similar cars

8 other 2020 BMW 4 Series M Sport 2.0 diesel automatic coupes are for sale at UK dealers, from £14,100 to £21,995, as of 6 November 2026.

The 3 closest to this car in mileage:

• 2020 BMW 4 Series M Sport, 2.0 diesel coupe, black. Mileage: 92,514 miles. Price: £17,999, £4,100 more than this car. Dealer: Prestige Car Supermarket in York. AskCar page: https://askcar.co.uk/car/bmw-4-series-2020-65bbd0962f3c
• 2020 BMW 4 Series M Sport, 2.0 diesel coupe, black. Mileage: 110,890 miles. Price: £17,771, £3,872 more than this car. Dealer: Mountbatten Car Sales in Bagstone. AskCar page: https://askcar.co.uk/car/bmw-4-series-2020-3d4b7ece2b45
• 2020 BMW 4 Series M Sport, 2.0 diesel coupe, blue. Mileage: 57,500 miles. Price: £17,490, £3,591 more than this car. Dealer: Spa Motors Mid Wales in Brecon. AskCar page: https://askcar.co.uk/car/bmw-4-series-2020-3dc3542f2247

• The nearest: 2020 BMW 4 Series M Sport, 2.0 diesel coupe, black, 104 miles from this car. Mileage: 24,786 miles. Price: £19,395, £5,496 more than this car. Dealer: Motor Trust Lancaster in Lancaster. AskCar page: https://askcar.co.uk/car/bmw-4-series-2020-8f4f403046e5