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: 21,975 miles
• Fuel: Petrol
• Body: Convertible, 2 doors, 4 seats
• Engine: 2.0 litres, 181 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: White
• CO2: 160 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2023 BMW 4 Series M Sport has covered 21,975 miles, around 6,400 fewer miles than is typical for its age. Priced at £30,000, it is advertised £514 below the AskCar estimate of £30,514. The AskCar estimate uses 1,814 UK dealer adverts for the BMW 4 Series, with adjustments for age, mileage, trim, engine and other specifications. We first saw this car advertised 61 days ago. Its asking price has since fallen by £1,950. The seller is Sandal BMW Wakefield, based in Wakefield. 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: £514 (1%) under the AskCar estimate of £30,514.

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 2023 BMW 4 Series with the 2.0 petrol engine is typically advertised at £29,900: the median of the 90 for sale on AskCar, as of 4 November 2026.

Time on sale

This 2023 BMW 4 Series has been on sale for at least 61 days.

Price history

AskCar first saw this advert on 4 September 2026 at £31,950. Its asking price is now £30,000, £1,950 less. The latest price cut was seen on 23 October 2026.

Price changes recorded:

• 4 September 2026: £31,950
• 18 September 2026: £31,500
• 1 October 2026: £31,150
• 23 October 2026: £30,000

Mileage and MOT

Advertised mileage is about 6,400 miles lower than the median mileage of a 2023 BMW 4 Series on AskCar.

Similar cars

34 other 2023 BMW 4 Series M Sport 2.0 petrol automatic convertibles are for sale at UK dealers, from £26,101 to £33,990, as of 4 November 2026.

The 3 closest to this car in mileage:

• 2023 BMW 4 Series M Sport, 2.0 petrol convertible, white. Mileage: 21,567 miles. Price: £30,995, £995 more than this car. Dealer: Lloyd Blackpool BMW in Blackpool. AskCar page: https://askcar.co.uk/car/bmw-4-series-2023-98b93f7a1843
• 2023 BMW 4 Series M Sport, 2.0 petrol convertible, white. Mileage: 21,567 miles. Price: £30,995, £995 more than this car. Dealer: Lloyd Blackpool BMW in Blackpool. AskCar page: https://askcar.co.uk/car/bmw-4-series-2023-bb727efe6367
• 2023 BMW 4 Series M Sport, 2.0 petrol convertible, grey. Mileage: 23,000 miles. Price: £31,995, £1,995 more than this car. Dealer: Stratstone BMW Tunbridge Wells in Royal Tunbridge Wells. AskCar page: https://askcar.co.uk/car/bmw-4-series-2023-ef18502d2d40

• The nearest: 2023 BMW 4 Series M Sport, 2.0 petrol convertible, white, 8 miles from this car. Mileage: 8,567 miles. Price: £32,899, £2,899 more than this car. Dealer: Motorpoint Leeds in Leeds. AskCar page: https://askcar.co.uk/car/bmw-4-series-2023-a5a4d97bf22b