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 2dr (181 bhp)
• Year: 2023
• Mileage: 13,000 miles
• Fuel: Petrol
• Body: Convertible, 2 doors, 4 seats
• Engine: 2.0 litres, 181 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: Green
• CO2: 160 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2023 BMW 4 Series M Sport is advertised with 13,000 miles, approximately 15,100 below the typical mileage for its age. Priced at £33,990, it is advertised £2,868 above the AskCar estimate of £31,122. To work out the AskCar estimate, we analyse UK dealer adverts for 1,826 BMW 4 Series cars across different ages and specifications. It first appeared in our advert records 30 days ago. The government's MOT record matches its advertised mileage. You can find this car at James Paul in Horsham. 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

Above the going rate: £2,868 (9%) over the AskCar estimate of £31,122.

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 30 days.

Price history

AskCar first saw this advert on 7 October 2026 at £33,990. 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 6 November 2026: valid until 24 August 2027.

It has had 2 MOTs. The latest, on 25 August 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 12,314 miles, which matches the advertised 13,000 miles.

Advertised mileage is about 15,100 miles lower than the median mileage of a 2023 BMW 4 Series on AskCar.

Similar cars

31 other 2023 BMW 4 Series M Sport 2.0 petrol automatic convertibles are for sale at UK dealers, from £25,999 to £33,499, as of 6 November 2026.

The 3 closest to this car in mileage:

• 2023 BMW 4 Series M Sport, 2.0 petrol convertible, white. Mileage: 12,515 miles. Price: £32,699, £1,291 less than this car. Dealer: Williams Bolton Bmw in Bolton. AskCar page: https://askcar.co.uk/car/bmw-4-series-2023-9ff859311334
• 2023 BMW 4 Series M Sport, 2.0 petrol convertible, black. Mileage: 14,459 miles. Price: £32,497, £1,493 less than this car. Dealer: Hedin Automotive Enfield BMW in Enfield. AskCar page: https://askcar.co.uk/car/bmw-4-series-2023-84eebd5788e8
• 2023 BMW 4 Series M Sport, 2.0 petrol convertible, blue. Mileage: 10,460 miles. Price: £32,399, £1,591 less than this car. Dealer: Fords Of Winsford Car Supermarket in Winsford. AskCar page: https://askcar.co.uk/car/bmw-4-series-2023-2374fa29cfc5

• The nearest: 2023 BMW 4 Series M Sport, 2.0 petrol convertible, blue, 12 miles from this car. Mileage: 28,500 miles. Price: £29,994, £3,996 less than this car. Dealer: Wimbledon Carriage Company in East Horsley. AskCar page: https://askcar.co.uk/car/bmw-4-series-2023-fd28059334ac