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 2dr Step (181 bhp)
• Year: 2021
• Mileage: 29,199 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

With 29,199 miles on the clock, this 2021 BMW 4 Series M Sport has done roughly 14,900 fewer miles than a typical 2021 BMW 4 Series. The dealer is asking £23,099, which is £2,492 below the AskCar estimate of £25,591. To work out the AskCar estimate, we analyse UK dealer adverts for 1,833 BMW 4 Series cars across different ages and specifications. We first saw this car advertised 161 days ago. Its asking price has since fallen by £2,250. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Motorpoint Chingford, based in Chingford. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 5 November 2026.

How we estimate prices and check cars

Price

Good value: £2,492 (9%) under the AskCar estimate of £25,591.

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 1,833 priced BMW 4 Series adverts across different ages and specifications, as of 5 November 2026.

A 2021 BMW 4 Series with the 2.0 petrol engine is typically advertised at £24,000: the median of the 149 for sale on AskCar, as of 5 November 2026.

Time on sale

This 2021 BMW 4 Series has been on sale for at least 161 days.

Price history

AskCar first saw this advert on 28 May 2026 at £25,349. Its asking price is now £23,099, £2,250 less. The latest price cut was seen on 3 November 2026.

Price changes recorded:

• 28 May 2026: £25,349
• 4 June 2026: £24,799
• 6 June 2026: £25,049
• 16 June 2026: £24,099
• 22 June 2026: £23,649
• 25 June 2026: £23,849
• 7 July 2026: £23,699
• 30 October 2026: £23,249
• 3 November 2026: £23,099

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 5 November 2026: valid until 3 March 2027.

It has had 3 MOTs. The latest, on 4 March 2026, passed.

Advisories at the latest test: offside rear tyre worn close to legal limit/worn on edge wearing on inner edge.

Mileage at that test: 27,639 miles, which matches the advertised 29,199 miles.

Advertised mileage is about 14,900 miles lower than the median mileage of a 2021 BMW 4 Series on AskCar.

Similar cars

48 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 5 November 2026.

The 3 closest to this car in mileage:

• 2021 BMW 4 Series M Sport, 2.0 petrol coupe, blue. Mileage: 28,622 miles. Price: £23,985, £886 more than this car. Dealer: Williams Bmw Manchester in Manchester. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-60506fe19a03
• 2021 BMW 4 Series M Sport, 2.0 petrol coupe, blue. Mileage: 28,502 miles. Price: £24,799, £1,700 more than this car. Dealer: Fords of Winsford Manchester in Manchester. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-029b5d1c5ee2
• 2021 BMW 4 Series M Sport, 2.0 petrol coupe, white. Mileage: 29,969 miles. Price: £25,498, £2,399 more than this car. Dealer: Arnold Clark Inverness Volvo in Inverness. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-44e51c9d4c4e

• The nearest: 2021 BMW 4 Series M Sport, 2.0 petrol coupe, blue, 6 miles from this car. Mileage: 40,178 miles. Price: £22,100, £999 less than this car. Dealer: Car Planet Barnet in Barnet. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-c04d0adf89d9