2021 BMW 4 Series 2.0 420i M Sport

Overview

• Make: BMW
• Model: 4 Series
• Trim: M Sport
• Version: 2.0 420i M Sport [Pro Pack] Auto RWD Euro 6 2dr Step (181 bhp)
• Year: 2021
• Mileage: 36,484 miles
• Fuel: Petrol
• Body: Coupe, 2 doors, 4 seats
• Engine: 2.0 litres, 181 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: White
• CO2: 144 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 BMW 4 Series M Sport is advertised with 36,484 miles, approximately 6,800 below the typical mileage for its age. Priced at £23,199, it is advertised £1,568 below the AskCar estimate of £24,767. The AskCar estimate uses 1,787 UK dealer adverts for the BMW 4 Series, with adjustments for age, mileage, trim, engine and other specifications. We first saw this car advertised 13 days ago. Its asking price has since fallen by £1,700. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Motorpoint Glasgow, based in Glasgow. 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

Fair price: £1,568 (6%) under the AskCar estimate of £24,767.

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 2021 BMW 4 Series with the 2.0 petrol engine is typically advertised at £23,900: the median of the 141 for sale on AskCar, as of 2 November 2026.

Time on sale

This 2021 BMW 4 Series has been on sale for at least 13 days.

Price history

AskCar first saw this advert on 20 October 2026 at £24,899. Its asking price is now £23,199, £1,700 less. The latest price cut was seen on 24 October 2026.

Price changes recorded:

• 20 October 2026: £24,899
• 24 October 2026: £23,149
• 28 October 2026: £23,199

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: valid until 9 October 2027.

It has had 3 MOTs. The latest, on 8 October 2026, passed.

Advisories at the latest test: front brake pad(s) wearing thin; offside front shock absorbers has a slightly worn bush.

Mileage at that test: 36,292 miles, which matches the advertised 36,484 miles.

Advertised mileage is about 6,800 miles lower than the median mileage of a 2021 BMW 4 Series on AskCar.

Similar cars

45 other 2021 BMW 4 Series M Sport 2.0 petrol automatic coupes are for sale at UK dealers, from £17,490 to £27,975, as of 2 November 2026.

The 3 closest to this car in mileage:

• 2021 BMW 4 Series M Sport, 2.0 petrol coupe, white. Mileage: 36,301 miles. Price: £24,340, £1,141 more than this car. Dealer: Hippo Approved in Blackburn. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-18ed4f3a8ce0
• 2021 BMW 4 Series M Sport, 2.0 petrol coupe, grey. Mileage: 36,119 miles. Price: £23,438, £239 more than this car. Dealer: Carsa Durham in Durham. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-cc559415000b
• 2021 BMW 4 Series M Sport, 2.0 petrol coupe, black. Mileage: 36,929 miles. Price: £22,498, £701 less than this car. Dealer: Arnold Clark Wallsend Silverlink Citroen / Peugeot / Jeep / OMODA / JAECOO in Wallsend. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-50d97e73a146

• The nearest: 2021 BMW 4 Series M Sport, 2.0 petrol coupe, black, 8 miles from this car. Mileage: 52,834 miles. Price: £22,995, £204 less than this car. Dealer: Eaglesham Garage in Glasgow. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-a8f823dfb3a3