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: 25,766 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

This 2023 BMW 4 Series M Sport is advertised with 25,766 miles, approximately 2,200 below the typical mileage for its age. The dealer is asking £27,998, which is £1,581 below the AskCar estimate of £29,579. To work out the AskCar estimate, we analyse UK dealer adverts for 1,833 BMW 4 Series cars across different ages and specifications. The asking price is now £1,000 lower than when we first recorded the advert 62 days ago. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Arnold Clark Irvine BMW, based in Irvine. 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: £1,581 (5%) under the AskCar estimate of £29,579.

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 62 days.

Price history

AskCar first saw this advert on 4 September 2026 at £28,998. Its asking price is now £27,998, £1,000 less. The latest price cut was seen on 4 November 2026.

Price changes recorded:

• 4 September 2026: £28,998
• 24 September 2026: £28,498
• 4 November 2026: £27,998

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 5 November 2026: valid until 18 August 2027.

It has had 2 MOTs. The latest, on 19 August 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 25,712 miles, which matches the advertised 25,766 miles.

Advertised mileage is about 2,200 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, green. Mileage: 26,402 miles. Price: £30,799, £2,801 more than this car. Dealer: Williams Bolton Bmw in Bolton. AskCar page: https://askcar.co.uk/car/bmw-4-series-2023-f27063debffd
• 2023 BMW 4 Series M Sport, 2.0 petrol coupe, black. Mileage: 26,700 miles. Price: £29,990, £1,992 more than this car. Dealer: Prestige Cars Of Essex in Harlow. AskCar page: https://askcar.co.uk/car/bmw-4-series-2023-76e75ca88839
• 2023 BMW 4 Series M Sport, 2.0 petrol coupe, black. Mileage: 23,966 miles. Price: £28,898, £900 more than this car. Dealer: Arnold Clark Kirkcaldy BMW in Kirkcaldy. AskCar page: https://askcar.co.uk/car/bmw-4-series-2023-0b290ac911d6

• The nearest: 2023 BMW 4 Series M Sport, 2.0 petrol coupe, grey, 24 miles from this car. Mileage: 15,156 miles. Price: £30,995, £2,997 more than this car. Dealer: Park's Motor Group Douglas Park BMW Glasgow in Glasgow. AskCar page: https://askcar.co.uk/car/bmw-4-series-2023-b854bdd1cf5c