2021 BMW 4 Series 2.0 420i M Sport

Price: £19,950. Fair price: £425 (2%) under the AskCar estimate of £20,375, our expected asking price for this car from its model, age, mileage and specification, drawing on 1,814 priced BMW 4 Series adverts on AskCar as of 4 November 2026.

AskCar lists 1,865 used BMW 4 Series from 1,070 UK dealerships, as of 4 November 2026.

Overview

  • Make: BMW
  • Model: 4 Series
  • Trim: M Sport
  • Version: 2.0 420i M Sport Auto Euro 6 2dr (181 bhp)
  • Year: 2021
  • Mileage: 70,584 miles
  • Fuel: Petrol
  • Body: Coupe, 2 doors, 4 seats
  • Engine: 2.0 litres, 181 bhp
  • Gearbox: Automatic
  • Colour: White
  • CO2: 151 g/km
  • Emissions standard: Euro 6, ULEZ compliant

About this car

With 70,584 miles on the clock, this 2021 BMW 4 Series M Sport has done roughly 26,500 more miles than a typical 2021 BMW 4 Series. The AskCar estimate for this car is £20,375. It is priced at £19,950, which is £425 below that estimate. The AskCar estimate uses UK dealer asking prices, including 1,814 BMW 4 Series adverts, and accounts for the car’s age, mileage and specification. We first saw this car advertised 127 days ago. Its asking price has since fallen by £1,000. We checked its advertised mileage against the government's MOT record, and they match. It is for sale at Staffordshire Car Company in Stoke-on-Trent. 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: £425 (2%) under the AskCar estimate of £20,375.

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 2021 BMW 4 Series with the 2.0 petrol engine is typically advertised at £24,000: the median of the 144 for sale on AskCar, as of 4 November 2026.

Time on sale

This 2021 BMW 4 Series has been on sale for at least 127 days.

Price history

AskCar first saw this advert on 30 June 2026 at £20,950. Its asking price is now £19,950, £1,000 less. The latest price cut was seen on 29 October 2026.

Price changes recorded:

  • 1 July 2026: £20,950
  • 29 October 2026: £19,950

Mileage and MOT

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

It has had 3 MOTs. The latest, on 9 June 2026, passed.

Advisories at the latest test: nearside front tyre worn close to legal limit/worn on edge; offside front tyre worn close to legal limit/worn on edge; nearside front road wheel slightly distorted; and 1 more.

Mileage at that test: 69,353 miles, which matches the advertised 70,584 miles.

Advertised mileage is about 26,500 miles higher 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 4 November 2026.

The 3 closest to this car in mileage:

  • 2021 BMW 4 Series M Sport, 2.0 petrol coupe, green. Mileage: 69,441 miles. Price: £20,650, £700 more than this car. Dealer: Car Planet Barnet in Barnet. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-c80af27cad41
  • 2021 BMW 4 Series M Sport, 2.0 petrol coupe, red. Mileage: 60,566 miles. Price: £22,149, £2,199 more than this car. Dealer: Greendale Car Sales in Hawick. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-26cecc1cf030
  • 2021 BMW 4 Series M Sport, 2.0 petrol coupe, blue. Mileage: 58,347 miles. Price: £21,995, £2,045 more than this car. Dealer: Richard Greer Car Sales in Ballyclare. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-581b1cbc102c
  • The nearest: 2021 BMW 4 Series M Sport, 2.0 petrol coupe, black, 26 miles from this car. Mileage: 34,384 miles. Price: £22,270, £2,320 more than this car. Dealer: Hilton Garage in Derby. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-3150eeefb5f4

Browse all BMW 4 Series cars for sale · 2021 BMW 4 Series price guide

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Photos

54 photos of this car are on its AskCar page.

As of 4 November 2026, AskCar lists 592,552 cars and vans from 12,964 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.