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: 28,500 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

This 2023 BMW 4 Series M Sport is advertised with 28,500 miles on the clock. Priced at £29,994, it is advertised £261 above the AskCar estimate of £29,733. The AskCar estimate draws on 1,833 BMW 4 Series adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We have tracked this advert for 22 days. The government's MOT record matches its advertised mileage. You can find this car at Wimbledon Carriage Company in Leatherhead. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 5 November 2026.

How we estimate prices and check cars

Price

Fair price: £261 (under 1%) over the AskCar estimate of £29,733.

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 1,833 priced BMW 4 Series adverts across different ages and specifications, as of 5 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 5 November 2026.

Time on sale

This 2023 BMW 4 Series has been on sale for at least 22 days.

Price history

AskCar first saw this advert on 14 October 2026 at £29,994. Its asking price has not changed.

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 5 November 2026: valid until 24 February 2027.

It has had one MOT, on 25 February 2026, and passed.

There were no advisories at the latest test.

Mileage at that test: 26,666 miles, which matches the advertised 28,500 miles.

Advertised mileage is about 500 miles higher than the median mileage of a 2023 BMW 4 Series on AskCar.

Similar cars

33 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 5 November 2026.

The 3 closest to this car in mileage:

• 2023 BMW 4 Series M Sport, 2.0 petrol convertible, white. Mileage: 28,614 miles. Price: £29,250, £744 less than this car. Dealer: Car Planet Watford in Watford. AskCar page: https://askcar.co.uk/car/bmw-4-series-2023-b77c765862fe
• 2023 BMW 4 Series M Sport, 2.0 petrol convertible, black. Mileage: 28,887 miles. Price: £31,895, £1,901 more than this car. Dealer: Berry Croydon BMW in Croydon. AskCar page: https://askcar.co.uk/car/bmw-4-series-2023-fad147ee2df2
• 2023 BMW 4 Series M Sport, 2.0 petrol convertible, blue. Mileage: 27,952 miles. Price: £29,995, the same price as this car. Dealer: Barretts BMW Ashford in Ashford. AskCar page: https://askcar.co.uk/car/bmw-4-series-2023-a71af739daae

• The nearest: 2023 BMW 4 Series M Sport, 2.0 petrol convertible, black, 6 miles from this car. Mileage: 31,628 miles. Price: £29,495, £499 less than this car. Dealer: Vines of Guildford BMW in Guildford. AskCar page: https://askcar.co.uk/car/bmw-4-series-2023-104990cd2204