2023 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: 2023
• Mileage: 24,139 miles
• Fuel: Petrol
• Body: Convertible, 2 doors, 4 seats
• Engine: 2.0 litres, 181 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: Blue
• CO2: 160 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 24,139 miles on the clock, this 2023 BMW 4 Series M Sport has done roughly 4,400 fewer miles than a typical 2023 BMW 4 Series. The dealer is asking £33,000, which is £2,908 above the AskCar estimate of £30,092. To work out the AskCar estimate, we analyse UK dealer adverts for 1,787 BMW 4 Series cars across different ages and specifications. We first saw this car advertised 48 days ago. Its asking price has since fallen by £400. It is for sale at Berry Heathrow in West Drayton. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 2 November 2026.

How we estimate prices and check cars

Price

Above the going rate: £2,908 (9%) over the AskCar estimate of £30,092.

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 1,787 priced BMW 4 Series adverts across different ages and specifications, as of 2 November 2026.

A 2023 BMW 4 Series with the 2.0 petrol engine is typically advertised at £29,500: the median of the 82 for sale on AskCar, as of 2 November 2026.

Time on sale

This 2023 BMW 4 Series has been on sale for at least 48 days.

Price history

AskCar first saw this advert on 15 September 2026 at £33,400. Its asking price is now £33,000, £400 less. The latest price cut was seen on 15 October 2026.

Price changes recorded:

• 15 September 2026: £33,400
• 15 October 2026: £33,000

Mileage and MOT

Advertised mileage is about 4,400 miles lower than the median mileage of a 2023 BMW 4 Series on AskCar.

Similar cars

27 other 2023 BMW 4 Series M Sport 2.0 petrol automatic convertibles are for sale at UK dealers, from £26,335 to £33,990, as of 2 November 2026.

The 3 closest to this car in mileage:

• 2023 BMW 4 Series M Sport, 2.0 petrol convertible, grey. Mileage: 23,427 miles. Price: £31,995, £1,005 less than this car. Dealer: Partridge BMW in Eastleigh. AskCar page: https://askcar.co.uk/car/bmw-4-series-2023-caf928c861cf
• 2023 BMW 4 Series M Sport, 2.0 petrol convertible, green. Mileage: 23,401 miles. Price: £31,000, £2,000 less than this car. Dealer: Hedin Automotive Enfield BMW in Enfield. AskCar page: https://askcar.co.uk/car/bmw-4-series-2023-3e1237447cb9
• 2023 BMW 4 Series M Sport, 2.0 petrol convertible, grey. Mileage: 23,000 miles. Price: £31,995, £1,005 less than this car. Dealer: MINI UK at Stratstone Tunbridge Wells in Royal Tunbridge Wells. AskCar page: https://askcar.co.uk/car/bmw-4-series-2023-4804e3047e64

• The nearest: 2023 BMW 4 Series M Sport, 2.0 petrol convertible, blue, 9 miles from this car. Mileage: 29,231 miles. Price: £30,000, £3,000 less than this car. Dealer: MB Brent Park in London. AskCar page: https://askcar.co.uk/car/bmw-4-series-2023-75c34cb72b20