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: 44,827 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 is advertised with 44,827 miles on the clock. The dealer is asking £23,000, which is £618 below the AskCar estimate of £23,618. To work out the AskCar estimate, we analyse UK dealer adverts for 1,826 BMW 4 Series cars across different ages and specifications. We first recorded this advert 112 days ago, and its asking price has since fallen by £500. The government's MOT record matches its advertised mileage. It is for sale at Colin Ludwell Cars in Bristol. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 6 November 2026.

How we estimate prices and check cars

Price

Fair price: £618 (2%) under the AskCar estimate of £23,618.

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 1,826 priced BMW 4 Series adverts across different ages and specifications, as of 6 November 2026.

A 2021 BMW 4 Series with the 2.0 petrol engine is typically advertised at £23,800: the median of the 148 for sale on AskCar, as of 6 November 2026.

Time on sale

This 2021 BMW 4 Series has been on sale for at least 112 days.

Price history

AskCar first saw this advert on 17 July 2026 at £23,500. Its asking price is now £23,000, £500 less. The latest price cut was seen on 4 November 2026.

Price changes recorded:

• 17 July 2026: £23,500
• 21 October 2026: £23,250
• 4 November 2026: £23,000

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 6 November 2026: valid until 30 April 2027.

It failed its MOT on 1 May 2026 (front registration plate does not conform to the specified requirements; rear registration plate does not conform to the specified requirements) and passed later the same day.

There were no advisories at the latest test.

Mileage at that test: 43,997 miles, which matches the advertised 44,827 miles.

Advertised mileage is about 800 miles higher than the median mileage of a 2021 BMW 4 Series on AskCar.

Similar cars

47 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 6 November 2026.

The 3 closest to this car in mileage:

• 2021 BMW 4 Series M Sport, 2.0 petrol coupe, white. Mileage: 45,100 miles. Price: £22,490, £510 less than this car. Dealer: S James Prestige in Essendine. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-9b2f000e5574
• 2021 BMW 4 Series M Sport, 2.0 petrol coupe, white. Mileage: 46,500 miles. Price: £24,500, £1,500 more than this car. Dealer: Sytner Tamworth BMW in Tamworth. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-d3d2726f8727
• 2021 BMW 4 Series M Sport, 2.0 petrol coupe, blue. Mileage: 42,300 miles. Price: £23,490, £490 more than this car. Dealer: S James Prestige in Essendine. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-2049ec2a15d6

• The nearest: 2021 BMW 4 Series M Sport, 2.0 petrol coupe, blue, 20 miles from this car. Mileage: 42,000 miles. Price: £26,990, £3,990 more than this car. Dealer: Your Car Group in Newport. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-485db81a5b87