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: 46,557 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

With 46,557 miles on the clock, this 2021 BMW 4 Series M Sport has done roughly 2,500 more miles than a typical 2021 BMW 4 Series. Its asking price of £23,498 is £503 below the AskCar estimate of £24,001. 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 for 101 days. Its advertised mileage matches the government's MOT record. The seller is Arnold Clark Livingston Vauxhall, based in Livingston. 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: £503 (2%) under the AskCar estimate of £24,001.

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 101 days.

Price history

AskCar first saw this advert on 27 July 2026 at £23,498. 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 18 March 2027.

It failed its MOT on 13 March 2026 (nearside rear tyre tread depth below requirements of 1.6mm; offside rear tyre tread depth below requirements of 1.6mm) and passed 1 day later, on 14 March 2026.

There were no advisories at the latest test.

Mileage at that test: 42,673 miles, which matches the advertised 46,557 miles.

Advertised mileage is about 2,500 miles higher 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, green. Mileage: 46,000 miles. Price: £26,500, £3,002 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, grey. Mileage: 48,000 miles. Price: £26,495, £2,997 more than this car. Dealer: Q Performance Ltd / My1stcar.org in Blackburn. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-dd807ced0fa6
• 2021 BMW 4 Series M Sport, 2.0 diesel coupe, white. Mileage: 44,115 miles. Price: £22,490, £1,008 less than this car. Dealer: Lloyd Select Blackpool in Blackpool. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-45734addecd2

• The nearest: 2021 BMW 4 Series M Sport, 2.0 diesel coupe, black, 11 miles from this car. Mileage: 52,485 miles. Price: £22,000, £1,498 less than this car. Dealer: Peoples Falkirk in Falkirk. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-6be077ca9c2a