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: 31,200 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

This 2021 BMW 4 Series M Sport is advertised with 31,200 miles, approximately 12,100 below the typical mileage for its age. The AskCar estimate for this car is £25,576. It is priced at £21,995, which is £3,581 below that estimate. The AskCar estimate draws on 1,787 BMW 4 Series adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We first recorded this car for sale 48 days ago. Its advertised mileage matches the government's MOT record. You can find this car at Raymond Smith Garages in Bedford. 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

Good value: £3,581 (14%) under the AskCar estimate of £25,576.

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 48 days.

Price history

AskCar first saw this advert on 15 September 2026 at £21,995. 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 2 November 2026: valid until 17 March 2027.

It has had 2 MOTs. The latest, on 18 March 2026, passed.

Advisories at the latest test: nearside front inner brake pad(s) wearing thin; offside rear inner brake pad(s) wearing thin; nearside rear tyre worn close to legal limit/worn on edge.

Mileage at that test: 27,135 miles, which matches the advertised 31,200 miles.

Advertised mileage is about 12,100 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, blue. Mileage: 31,692 miles. Price: £25,795, £3,800 more than this car. Dealer: Partridge BMW in Eastleigh. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-ab00ad51f0d5
• 2021 BMW 4 Series M Sport, 2.0 petrol coupe, blue. Mileage: 29,199 miles. Price: £23,249, £1,254 more than this car. Dealer: Motorpoint Chingford in Chingford. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-c727067e39f2
• 2021 BMW 4 Series M Sport, 2.0 petrol coupe, blue. Mileage: 28,622 miles. Price: £24,975, £2,980 more than this car. Dealer: Williams Bmw Manchester in Manchester. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-60506fe19a03

• The nearest: 2021 BMW 4 Series M Sport, 2.0 petrol coupe, black, 7 miles from this car. Mileage: 96,000 miles. Price: £17,495, £4,500 less than this car. Dealer: Motorhouse (Beds) in Bedford. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-b61ce310b6dc