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 4WD Euro 6 (s/s) 2dr (181 bhp)
• Year: 2023
• Mileage: 26,402 miles
• Fuel: Petrol
• Body: Coupe, 2 doors, 4 seats
• Engine: 2.0 litres, 181 bhp
• Gearbox: Automatic
• Drive: Four-wheel drive
• Colour: Green
• CO2: 159 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

The advertised mileage for this 2023 BMW 4 Series M Sport is 26,402 miles. Its asking price of £30,799 is £952 above the AskCar estimate of £29,847. The AskCar estimate draws on 1,826 BMW 4 Series adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. Since we first spotted the advert 23 days ago, the asking price has dropped by £200. The seller is Williams Bolton Bmw, based in Bolton. 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: £952 (3%) over the AskCar estimate of £29,847.

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 2023 BMW 4 Series with the 2.0 petrol engine is typically advertised at £29,600: the median of the 89 for sale on AskCar, as of 6 November 2026.

Time on sale

This 2023 BMW 4 Series has been on sale for at least 23 days.

Price history

AskCar first saw this advert on 14 October 2026 at £30,999. Its asking price is now £30,799, £200 less. The latest price cut was seen on 4 November 2026.

Price changes recorded:

• 14 October 2026: £30,999
• 4 November 2026: £30,799

Mileage and MOT

Advertised mileage is about 1,700 miles lower than the median mileage of a 2023 BMW 4 Series on AskCar.

Similar cars

22 other 2023 BMW 4 Series M Sport 2.0 petrol automatic coupes are for sale at UK dealers, from £24,980 to £34,995, as of 6 November 2026.

The 3 closest to this car in mileage:

• 2023 BMW 4 Series M Sport, 2.0 petrol coupe, black. Mileage: 26,700 miles. Price: £29,990, £809 less than this car. Dealer: Prestige Cars Of Essex in Harlow. AskCar page: https://askcar.co.uk/car/bmw-4-series-2023-76e75ca88839
• 2023 BMW 4 Series M Sport, 2.0 petrol coupe, blue. Mileage: 25,766 miles. Price: £27,998, £2,801 less than this car. Dealer: Arnold Clark Irvine BMW in Irvine. AskCar page: https://askcar.co.uk/car/bmw-4-series-2023-640b592dd4c7
• 2023 BMW 4 Series M Sport, 2.0 petrol coupe, blue. Mileage: 27,970 miles. Price: £26,995, £3,804 less than this car. Dealer: Sere Used Car Supermarket Lisburn in Lisburn. AskCar page: https://askcar.co.uk/car/bmw-4-series-2023-41b2d29a83bf

• The nearest: 2023 BMW 4 Series M Sport, 2.0 petrol coupe, blue, 8 miles from this car. Mileage: 11,902 miles. Price: £30,799, the same price as this car. Dealer: Fords of Winsford Manchester in Manchester. AskCar page: https://askcar.co.uk/car/bmw-4-series-2023-ba622e2824cb