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 Step (181 bhp)
• Year: 2023
• Mileage: 25,965 miles
• Fuel: Petrol
• Body: Convertible, 2 doors, 4 seats
• Engine: 2.0 litres, 181 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: Grey
• CO2: 154 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2023 BMW 4 Series M Sport is advertised with 25,965 miles, approximately 2,500 below the typical mileage for its age. The AskCar estimate for this car is £29,163. It is priced at £32,817, which is £3,654 above that estimate. The AskCar estimate draws on 1,787 BMW 4 Series adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We have tracked this advert for 10 days. The seller is Vertu BMW Exeter, based in Exeter. 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: £3,654 (12%) over the AskCar estimate of £29,163.

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 10 days.

Price history

AskCar first saw this advert on 23 October 2026 at £32,502. Its asking price is now £32,817, £315 more.

Price changes recorded:

• 23 October 2026: £32,502
• 24 October 2026: £32,817

Mileage and MOT

Advertised mileage is about 2,500 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, blue. Mileage: 24,139 miles. Price: £33,000, £183 more than this car. Dealer: Berry Heathrow in Heathrow. AskCar page: https://askcar.co.uk/car/bmw-4-series-2023-13b439dfa6d6
• 2023 BMW 4 Series M Sport, 2.0 petrol convertible, blue. Mileage: 27,903 miles. Price: £29,990, £2,827 less than this car. Dealer: Barretts BMW Ashford in Ashford. AskCar page: https://askcar.co.uk/car/bmw-4-series-2023-c60bf2f8b37d
• 2023 BMW 4 Series M Sport, 2.0 petrol convertible, blue. Mileage: 27,908 miles. Price: £29,995, £2,822 less than 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, grey, 95 miles from this car. Mileage: 23,427 miles. Price: £31,995, £822 less than this car. Dealer: Partridge BMW in Eastleigh. AskCar page: https://askcar.co.uk/car/bmw-4-series-2023-caf928c861cf