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: 51,644 miles
• Fuel: Petrol
• Body: Coupe, 2 doors, 4 seats
• Engine: 2.0 litres, 181 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: Blue
• CO2: 151 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 51,644 miles on the clock, this 2021 BMW 4 Series M Sport has done roughly 7,600 more miles than a typical 2021 BMW 4 Series. Its asking price of £23,450 is £667 above the AskCar estimate of £22,783. The AskCar estimate draws on 1,833 BMW 4 Series adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. It first appeared in our advert records 33 days ago. According to the government's MOT record, its advertised mileage is consistent with the latest test. You can find this car at Lloyd Newcastle BMW in Newcastle Upon Tyne. 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: £667 (2%) over the AskCar estimate of £22,783.

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

This 2021 BMW 4 Series has been on sale for at least 33 days.

Price history

AskCar first saw this advert on 3 October 2026 at £23,450. 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 20 May 2027.

It has had 5 MOTs. The latest, on 21 May 2026, passed.

Advisories at the latest test: nearside front tyre slightly damaged/cracking or perishing; nearside rear tyre slightly damaged/cracking or perishing; offside front tyre slightly damaged/cracking or perishing.

Mileage at that test: 48,049 miles, which matches the advertised 51,644 miles.

Advertised mileage is about 7,600 miles higher 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: 51,644 miles. Price: £23,450, the same price as this car. Dealer: Lloyd Newcastle BMW in Newcastle upon Tyne. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-ee872d20180b
• 2021 BMW 4 Series M Sport, 2.0 petrol coupe, blue. Mileage: 52,743 miles. Price: £24,500, £1,050 more than this car. Dealer: John Clark MINI Tayside in Dundee. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-16d3ea65b65d
• 2021 BMW 4 Series M Sport, 2.0 petrol coupe, black. Mileage: 52,834 miles. Price: £22,995, £455 less than this car. Dealer: Eaglesham Garage in Glasgow. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-a8f823dfb3a3