2021 BMW 4 Series 2.0 420d MHT M Sport

Overview

• Make: BMW
• Model: 4 Series
• Trim: M Sport
• Version: 2.0 420d MHT M Sport Auto RWD Euro 6 (s/s) 2dr (187 bhp)
• Year: 2021
• Mileage: 44,000 miles
• Fuel: Diesel, mild hybrid
• Body: Coupe, 2 doors, 4 seats
• Engine: 2.0 litres, 187 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: Blue
• CO2: 127 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

The advertised mileage for this 2021 BMW 4 Series M Sport is 44,000 miles. Its asking price of £23,490 is £854 below the AskCar estimate of £24,344. The AskCar estimate uses UK dealer asking prices, including 1,833 BMW 4 Series adverts, and accounts for the car’s age, mileage and specification. We first saw this car advertised 153 days ago. Its asking price has since fallen by £1,000. Our latest MOT record expired on 13 October 2026. Check the current position with the dealer. We checked its advertised mileage against the government's MOT record, and they match. It is for sale at Stratus in Hook. 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: £854 (3%) under the AskCar estimate of £24,344.

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 diesel 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 153 days.

Price history

AskCar first saw this advert on 5 June 2026 at £24,490. Its asking price is now £23,490, £1,000 less. The latest price cut was seen on 9 October 2026.

Price changes recorded:

• 6 June 2026: £24,490
• 18 September 2026: £23,990
• 9 October 2026: £23,490

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 5 November 2026: the latest record we hold ran out on 13 October 2026; ask the dealer for the current MOT.

It has had 2 MOTs. The latest, on 14 October 2025, passed.

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

Mileage at that test: 40,372 miles, which matches the advertised 44,000 miles.

Advertised mileage is about 100 miles lower than the median mileage of a 2021 BMW 4 Series on AskCar.

Similar cars

35 other 2021 BMW 4 Series M Sport 2.0 diesel automatic coupes are for sale at UK dealers, from £17,490 to £26,500, as of 5 November 2026.

The 3 closest to this car in mileage:

• 2021 BMW 4 Series M Sport, 2.0 diesel coupe, white. Mileage: 44,115 miles. Price: £22,490, £1,000 less than this car. Dealer: Lloyd Select Blackpool in Blackpool. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-45734addecd2
• 2021 BMW 4 Series M Sport, 2.0 diesel coupe, green. Mileage: 46,000 miles. Price: £26,500, £3,010 more than this car. Dealer: Q Performance Ltd / My1stcar.org in Blackburn. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-4151f00452e9
• 2021 BMW 4 Series M Sport, 2.0 diesel coupe, blue. Mileage: 46,557 miles. Price: £23,498, the same price as this car. Dealer: Arnold Clark Livingston Vauxhall in Livingston. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-6b9d6c6f4ec2

• The nearest: 2021 BMW 4 Series M Sport, 2.0 diesel coupe, black, 19 miles from this car. Mileage: 34,848 miles. Price: £23,995, £505 more than this car. Dealer: A1 Auto Solutions in Maidenhead. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-5e810c1fe515