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: 38,000 miles
• Fuel: Petrol
• Body: Coupe, 2 doors, 4 seats
• Engine: 2.0 litres, 181 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: Grey
• CO2: 151 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 BMW 4 Series M Sport is advertised with 38,000 miles, approximately 6,100 below the typical mileage for its age. Its asking price of £22,995 is £1,582 below the AskCar estimate of £24,577. The AskCar estimate uses 1,833 UK dealer adverts for the BMW 4 Series, with adjustments for age, mileage, trim, engine and other specifications. We have tracked this advert today. Its advertised mileage matches the government's MOT record. You can find this car at S & S Car Sales in Ky62sy. 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

Fair price: £1,582 (6%) under the AskCar estimate of £24,577.

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

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: 103 of the 246 first advertised between 11 July 2026 and 2 October 2026.

Price history

AskCar first saw this advert on 5 November 2026 at £22,995. 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 5 November 2026: valid until 19 May 2027.

It has had 4 MOTs. The latest, on 20 May 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 36,442 miles, which matches the advertised 38,000 miles.

Advertised mileage is about 6,100 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: 39,000 miles. Price: £24,995, £2,000 more than this car. Dealer: Q Performance Ltd / My1stcar.org in Blackburn. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-4beb869d660f
• 2021 BMW 4 Series M Sport, 2.0 petrol coupe, red. Mileage: 37,000 miles. Price: £25,850, £2,855 more than this car. Dealer: A & S Cars in Bishop's Stortford. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-eb34f1d39444
• 2021 BMW 4 Series M Sport, 2.0 petrol coupe, black. Mileage: 36,929 miles. Price: £22,498, £497 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, blue, 22 miles from this car. Mileage: 52,743 miles. Price: £24,500, £1,505 more than this car. Dealer: John Clark MINI Tayside in Dundee. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-16d3ea65b65d