2021 BMW 4 Series 2.0 430i M Sport

Overview

• Make: BMW
• Model: 4 Series
• Trim: M Sport
• Version: 2.0 430i M Sport Auto RWD Euro 6 (s/s) 2dr
• Year: 2021
• Mileage: 33,078 miles
• Fuel: Petrol
• Body: Convertible, 2 doors, 4 seats
• Engine: 2.0 litres
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: White
• CO2: 160 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 BMW 4 Series M Sport has covered 33,078 miles, around 11,000 fewer miles than is typical for its age. The AskCar estimate for this car is £25,767. It is priced at £27,750, which is £1,983 above that estimate. To work out the AskCar estimate, we analyse UK dealer adverts for 1,814 BMW 4 Series cars across different ages and specifications. We first saw this car advertised 76 days ago. Its asking price has since fallen by £194. We checked its advertised mileage against the government's MOT record, and they match. The seller is Vines of Guildford BMW, based in Guildford. 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: £1,983 (7%) over the AskCar estimate of £25,767.

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 petrol 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 76 days.

Price history

AskCar first saw this advert on 20 August 2026 at £27,944. Its asking price is now £27,750, £194 less. The latest price cut was seen on 29 October 2026.

Price changes recorded:

• 20 August 2026: £27,944
• 24 August 2026: £27,823
• 30 August 2026: £27,641
• 5 September 2026: £27,435
• 13 September 2026: £27,238
• 19 September 2026: £26,993
• 27 September 2026: £26,992
• 6 October 2026: £28,026
• 18 October 2026: £27,995
• 25 October 2026: £27,950
• 29 October 2026: £27,750

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 4 November 2026: valid until 27 March 2027.

It has had 3 MOTs. The latest, on 5 March 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 30,880 miles, which matches the advertised 33,078 miles.

Advertised mileage is about 11,000 miles lower than the median mileage of a 2021 BMW 4 Series on AskCar.

Similar cars

26 other 2021 BMW 4 Series M Sport 2.0 petrol automatic convertibles are for sale at UK dealers, from £18,990 to £33,950, as of 4 November 2026.

The 3 closest to this car in mileage:

• 2021 BMW 4 Series M Sport, 2.0 petrol convertible, green. Mileage: 33,000 miles. Price: £25,990, £1,760 less than this car. Dealer: Northover Cars in Whitstable. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-73ad6e80af4f
• 2021 BMW 4 Series M Sport, 2.0 petrol convertible, white. Mileage: 33,607 miles. Price: £24,850, £2,900 less than this car. Dealer: Evans Halshaw Vauxhall Newport in Newport. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-b45f7103a93e
• 2021 BMW 4 Series M Sport, 2.0 petrol convertible, white. Mileage: 35,008 miles. Price: £25,990, £1,760 less than this car. Dealer: Alpha Motors in Wigan. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-dfd9ebfe4c58

• The nearest: 2021 BMW 4 Series M Sport, 2.0 petrol convertible, blue, 7 miles from this car. Mileage: 97,313 miles. Price: £18,990, £8,760 less than this car. Dealer: CS Autos Prestige Cars in Addlestone. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-affda13ef70c