2021 BMW 4 Series 2.0 420i M Sport

Overview

• Make: BMW
• Model: 4 Series
• Trim: M Sport
• Version: 2.0 420i M Sport Auto RWD Euro 6 (s/s) 2dr (181 bhp)
• Year: 2021
• Mileage: 65,443 miles
• Fuel: Petrol
• Body: Coupe, 2 doors, 4 seats
• Engine: 2.0 litres, 181 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: White
• CO2: 151 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 65,443 miles, this 2021 BMW 4 Series M Sport has covered about 21,400 more miles than other 2021 BMW 4 Series cars. The dealer is asking £21,898, which is £1,043 above the AskCar estimate of £20,855. To work out the AskCar estimate, we analyse UK dealer adverts for 1,826 BMW 4 Series cars across different ages and specifications. This car was first seen in our listings data today. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Arnold Clark Kirkcaldy BMW, based in Kirkcaldy. 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: £1,043 (5%) over the AskCar estimate of £20,855.

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 2021 BMW 4 Series with the 2.0 petrol engine is typically advertised at £23,800: the median of the 148 for sale on AskCar, as of 6 November 2026.

Time on sale

AskCar first saw this 2021 BMW 4 Series advertised today. About 4 in 10 of 2021 BMW 4 Series cars are gone from sale within a month of being advertised: 108 of the 256 first advertised between 11 July 2026 and 3 October 2026.

Price history

AskCar first saw this advert on 6 November 2026 at £21,898. Its asking price has not changed.

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 6 November 2026: valid until 9 June 2027.

It has had 3 MOTs. The latest, on 25 May 2026, passed.

Advisories at the latest test: nearside front outer tyre worn close to legal limit/worn on edge; offside front outer tyre worn close to legal limit/worn on edge 225/40r19.

Mileage at that test: 58,973 miles, which matches the advertised 65,443 miles.

Advertised mileage is about 21,400 miles higher than the median mileage of a 2021 BMW 4 Series on AskCar.

Similar cars

47 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 6 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, £1,248 less 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, white. Mileage: 70,584 miles. Price: £19,950, £1,948 less than this car. Dealer: Staffordshire Car Company in Stoke-on-Trent. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-e032643e2607
• 2021 BMW 4 Series M Sport, 2.0 petrol coupe, blue. Mileage: 58,347 miles. Price: £21,995, £97 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, grey, 4 miles from this car. Mileage: 38,000 miles. Price: £22,995, £1,097 more than this car. Dealer: S & S Car Sales in Glenrothes. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-d03e2e091ffa