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: 23,401 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 23,401 miles, approximately 5,100 below the typical mileage for its age. Priced at £31,000, it is advertised £809 above the AskCar estimate of £30,191. The AskCar estimate draws on 1,787 BMW 4 Series adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. This car was first seen in our listings data 6 days ago. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Hedin Automotive Enfield BMW, based in Enfield. 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

Fair price: £809 (2%) over the AskCar estimate of £30,191.

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

AskCar first saw this 2023 BMW 4 Series advertised 6 days ago. About half of 2023 BMW 4 Series cars are gone from sale within a month of being advertised: 76 of the 169 first advertised between 11 July 2026 and 29 September 2026.

Price history

AskCar first saw this advert on 27 October 2026 at £31,000. 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 2 November 2026: valid until 7 September 2027.

It has had one MOT, on 29 August 2026, and passed.

There were no advisories at the latest test.

Mileage at that test: 22,053 miles, which matches the advertised 23,401 miles.

Advertised mileage is about 5,100 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, grey. Mileage: 23,427 miles. Price: £31,995, £995 more than this car. Dealer: Partridge BMW in Eastleigh. AskCar page: https://askcar.co.uk/car/bmw-4-series-2023-caf928c861cf
• 2023 BMW 4 Series M Sport, 2.0 petrol convertible, grey. Mileage: 23,000 miles. Price: £31,995, £995 more than this car. Dealer: MINI UK at Stratstone Tunbridge Wells in Royal Tunbridge Wells. AskCar page: https://askcar.co.uk/car/bmw-4-series-2023-4804e3047e64
• 2023 BMW 4 Series M Sport, 2.0 petrol convertible, blue. Mileage: 24,139 miles. Price: £33,000, £2,000 more than this car. Dealer: Berry Heathrow in Heathrow. AskCar page: https://askcar.co.uk/car/bmw-4-series-2023-13b439dfa6d6

• The nearest: 2023 BMW 4 Series M Sport, 2.0 petrol convertible, black, under a mile from this car. Mileage: 14,459 miles. Price: £32,850, £1,850 more than this car. Dealer: Hedin Automotive Enfield BMW in Enfield. AskCar page: https://askcar.co.uk/car/bmw-4-series-2023-84eebd5788e8