2023 BMW 4 Series 2.0 420i M Sport

Overview

• Make: BMW
• Model: 4 Series
• Trim: M Sport
• Version: 2.0 420i M Sport [Pro Pack] Auto RWD Euro 6 2dr Step (181 bhp)
• Year: 2023
• Mileage: 21,400 miles
• Fuel: Petrol
• Body: Coupe, 2 doors, 4 seats
• Engine: 2.0 litres, 181 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: Blue
• CO2: 144 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 21,400 miles on the clock, this 2023 BMW 4 Series M Sport has done roughly 6,600 fewer miles than a typical 2023 BMW 4 Series. Its asking price of £27,999 is £2,377 below the AskCar estimate of £30,376. To work out the AskCar estimate, we analyse UK dealer adverts for 1,833 BMW 4 Series cars across different ages and specifications. We have tracked this advert for 1 day. It is for sale at Lookers in Belfast. 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: £2,377 (7%) under the AskCar estimate of £30,376.

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

AskCar first saw this 2023 BMW 4 Series advertised 1 day ago. About 4 in 10 of 2023 BMW 4 Series cars are gone from sale within a month of being advertised: 81 of the 182 first advertised between 11 July 2026 and 2 October 2026.

Price history

AskCar first saw this advert on 4 November 2026 at £27,999. Its asking price has not changed.

Mileage and MOT

Advertised mileage is about 6,600 miles lower than the median mileage of a 2023 BMW 4 Series on AskCar.

Similar cars

22 other 2023 BMW 4 Series M Sport 2.0 petrol automatic coupes are for sale at UK dealers, from £24,980 to £34,995, as of 5 November 2026.

The 3 closest to this car in mileage:

• 2023 BMW 4 Series M Sport, 2.0 petrol coupe, blue. Mileage: 19,250 miles. Price: £27,500, £499 less than this car. Dealer: German Autocentre in Sheffield. AskCar page: https://askcar.co.uk/car/bmw-4-series-2023-1363aa9b75e0
• 2023 BMW 4 Series M Sport, 2.0 petrol coupe, black. Mileage: 23,966 miles. Price: £28,898, £899 more than this car. Dealer: Arnold Clark Kirkcaldy BMW in Kirkcaldy. AskCar page: https://askcar.co.uk/car/bmw-4-series-2023-0b290ac911d6
• 2023 BMW 4 Series M Sport, 2.0 petrol coupe, green. Mileage: 18,097 miles. Price: £30,720, £2,721 more than this car. Dealer: Vertu Mercedes Slough in Slough. AskCar page: https://askcar.co.uk/car/bmw-4-series-2023-54ce8099fd3f

• The nearest: 2023 BMW 4 Series M Sport, 2.0 petrol coupe, blue, 8 miles from this car. Mileage: 27,970 miles. Price: £26,995, £1,004 less than this car. Dealer: Sere Used Car Supermarket Lisburn in Lisburn. AskCar page: https://askcar.co.uk/car/bmw-4-series-2023-41b2d29a83bf