2021 BMW 4 Series 2.0 420i M Sport PRO Edition

Overview

• Make: BMW
• Model: 4 Series
• Trim: M Sport PRO Edition
• Version: 2.0 420i M Sport Pro Edition Auto RWD Euro 6 2dr Step (181 bhp)
• Year: 2021
• Mileage: 44,479 miles
• Fuel: Petrol
• Body: Convertible, 2 doors, 4 seats
• Engine: 2.0 litres, 181 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: Grey
• CO2: 159 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

The advertised mileage for this 2021 BMW 4 Series M Sport Pro Edition is 44,479 miles. Its asking price of £25,807 is £197 above the AskCar estimate of £25,610. To work out the AskCar estimate, we analyse UK dealer adverts for 1,810 BMW 4 Series cars across different ages and specifications. Since we first spotted the advert 86 days ago, the asking price has dropped by £3,688. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Vertu BMW Yeovil, based in Yeovil. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 10 November 2026.

How we estimate prices and check cars

Price

Fair price: £197 (under 1%) over the AskCar estimate of £25,610.

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 1,810 priced BMW 4 Series adverts across different ages and specifications, as of 10 November 2026.

A 2021 BMW 4 Series with the 2.0 petrol engine is typically advertised at £24,000: the median of the 143 for sale on AskCar, as of 10 November 2026.

Time on sale

This 2021 BMW 4 Series has been on sale for at least 86 days.

Price history

AskCar first saw this advert on 16 August 2026 at £29,495. Its asking price is now £25,807, £3,688 less. The latest price cut was seen on 23 October 2026.

Price changes recorded:

• 16 August 2026: £29,495
• 19 August 2026: £28,882
• 21 August 2026: £28,584
• 26 August 2026: £28,222
• 27 August 2026: £28,084
• 30 August 2026: £27,880
• 4 September 2026: £27,711
• 8 September 2026: £27,390
• 14 October 2026: £26,348
• 15 October 2026: £25,995
• 23 October 2026: £25,495
• 9 November 2026: £25,807

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 10 November 2026: valid until 11 May 2027.

It has had 3 MOTs. The latest, on 22 April 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 42,480 miles, which matches the advertised 44,479 miles.

Advertised mileage is about 400 miles higher than the median mileage of a 2021 BMW 4 Series on AskCar.

Similar cars

1 other 2021 BMW 4 Series M Sport PRO Edition 2.0 petrol automatic convertible is for sale at UK dealers, as of 10 November 2026.

The closest to this car in mileage:

• 2021 BMW 4 Series M Sport PRO Edition, 2.0 petrol convertible, blue. Mileage: 23,667 miles. Price: £28,150, £2,343 more than this car. Dealer: Car Planet Watford in Watford. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-8884ca83827e