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: 17,330 miles
• Fuel: Diesel, mild hybrid
• Body: Coupe, 2 doors, 4 seats
• Engine: 2.0 litres, 187 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: White
• CO2: 127 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 BMW 4 Series M Sport has covered 17,330 miles, around 26,800 fewer miles than is typical for its age. Its asking price of £26,390 is £1,465 below the AskCar estimate of £27,855. The AskCar estimate uses 1,814 UK dealer adverts for the BMW 4 Series, with adjustments for age, mileage, trim, engine and other specifications. Since we first spotted the advert 46 days ago, the asking price has dropped by £1,560. We checked its advertised mileage against the government's MOT record, and they match. The seller is Stratstone Bmw Harrogate, based in Harrogate. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 4 November 2026.

How we estimate prices and check cars

Price

Fair price: £1,465 (5%) under the AskCar estimate of £27,855.

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 1,814 priced BMW 4 Series adverts across different ages and specifications, as of 4 November 2026.

A 2021 BMW 4 Series with the 2.0 diesel engine is typically advertised at £24,000: the median of the 144 for sale on AskCar, as of 4 November 2026.

Time on sale

This 2021 BMW 4 Series has been on sale for at least 46 days.

Price history

AskCar first saw this advert on 19 September 2026 at £27,950. Its asking price is now £26,390, £1,560 less. The latest price cut was seen on 27 October 2026.

Price changes recorded:

• 19 September 2026: £27,950
• 26 September 2026: £27,190
• 9 October 2026: £27,090
• 16 October 2026: £26,690
• 27 October 2026: £26,390

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 4 November 2026: valid until 10 March 2027.

It has had 3 MOTs. The latest, on 10 March 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 15,261 miles, which matches the advertised 17,330 miles.

Advertised mileage is about 26,800 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 4 November 2026.

The 3 closest to this car in mileage:

• 2021 BMW 4 Series M Sport, 2.0 diesel coupe, white. Mileage: 13,800 miles. Price: £25,450, £940 less than this car. Dealer: London Carz in London. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-7088d1e0752c
• 2021 BMW 4 Series M Sport, 2.0 diesel coupe, grey. Mileage: 24,428 miles. Price: £25,995, £395 less than this car. Dealer: Partridge BMW in Eastleigh. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-bcb8f2603746
• 2021 BMW 4 Series M Sport, 2.0 diesel coupe, black. Mileage: 30,035 miles. Price: £24,849, £1,541 less than this car. Dealer: Ocean Plymouth in Plymouth. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-bcaf664107a0

• The nearest: 2021 BMW 4 Series M Sport, 2.0 diesel coupe, black, 11 miles from this car. Mileage: 37,900 miles. Price: £22,995, £3,395 less than this car. Dealer: Yorkshire Vehicle Solutions in York. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-f62467d64221