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: 34,384 miles
• Fuel: Petrol
• Body: Coupe, 2 doors, 4 seats
• Engine: 2.0 litres, 181 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: Black
• CO2: 151 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 BMW 4 Series M Sport has covered 34,384 miles, around 8,900 fewer miles than is typical for its age. The AskCar estimate for this car is £25,132. It is priced at £22,270, which is £2,862 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 saw this car advertised 4 days ago. Its asking price has since fallen by £980. The government's MOT record matches its advertised mileage. It is for sale at Hilton Garage in Derby. 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: £2,862 (11%) under the AskCar estimate of £25,132.

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

AskCar first saw this 2021 BMW 4 Series advertised 4 days ago. About 4 in 10 of 2021 BMW 4 Series cars are gone from sale within a month of being advertised: 98 of the 228 first advertised between 11 July 2026 and 29 September 2026.

Price history

AskCar first saw this advert on 29 October 2026 at £23,250. Its asking price is now £22,270, £980 less. The latest price cut was seen on 2 November 2026.

Price changes recorded:

• 29 October 2026: £23,250
• 30 October 2026: £23,450
• 2 November 2026: £22,270

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: valid until 24 March 2027.

It has had 4 MOTs. The latest, on 25 March 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 30,372 miles, which matches the advertised 34,384 miles.

Advertised mileage is about 8,900 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, black. Mileage: 35,835 miles. Price: £23,249, £979 more than this car. Dealer: Motorpoint Swansea in Swansea. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-04c596fd9dc3
• 2021 BMW 4 Series M Sport, 2.0 petrol coupe, grey. Mileage: 36,119 miles. Price: £23,438, £1,168 more than this car. Dealer: Carsa Durham in Durham. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-cc559415000b
• 2021 BMW 4 Series M Sport, 2.0 petrol coupe, white. Mileage: 36,301 miles. Price: £24,340, £2,070 more than this car. Dealer: Hippo Approved in Blackburn. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-18ed4f3a8ce0

• The nearest: 2021 BMW 4 Series M Sport, 2.0 petrol coupe, white, 26 miles from this car. Mileage: 70,584 miles. Price: £19,950, £2,320 less than this car. Dealer: Staffordshire Car Company in Stoke-on-Trent. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-e032643e2607