2023 BMW 4 Series Gran Coupe 2.0 420i M Sport

Overview

• Make: BMW
• Model: 4 Series Gran Coupe
• Trim: M Sport
• Version: 2.0 420i M Sport Auto RWD Euro 6 5dr Step (181 bhp)
• Year: 2023
• Mileage: 21,196 miles
• Fuel: Petrol
• Body: Coupe, 5 doors, 5 seats
• Engine: 2.0 litres, 181 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: Grey
• CO2: 152 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2023 BMW 4 Series Gran Coupe M Sport has covered 21,196 miles, around 7,000 fewer miles than is typical for its age. Its asking price of £29,890 is £369 above the AskCar estimate of £29,521. To work out the AskCar estimate, we analyse UK dealer adverts for 1,169 BMW 4 Series Gran Coupe cars across different ages and specifications. We first recorded this car for sale 2 days ago. Its advertised mileage matches the government's MOT record. The seller is Stratstone BMW Maidstone, based in Aylesford. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 8 November 2026.

How we estimate prices and check cars

Price

Fair price: £369 (1%) over the AskCar estimate of £29,521.

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 1,169 priced BMW 4 Series Gran Coupe adverts across different ages and specifications, as of 8 November 2026.

A 2023 BMW 4 Series Gran Coupe with the 2.0 petrol engine is typically advertised at £28,900: the median of the 64 for sale on AskCar, as of 8 November 2026.

Time on sale

AskCar first saw this 2023 BMW 4 Series Gran Coupe advertised 2 days ago. About half of 2023 BMW 4 Series Gran Coupe cars are gone from sale within a month of being advertised: 73 of the 135 first advertised between 9 July 2026 and 5 October 2026.

Price history

AskCar first saw this advert on 6 November 2026 at £29,890. 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 8 November 2026: valid until 27 March 2027.

It has had one MOT, on 23 March 2026, and passed.

There were no advisories at the latest test.

Mileage at that test: 16,983 miles, which matches the advertised 21,196 miles.

Advertised mileage is about 7,000 miles lower than the median mileage of a 2023 BMW 4 Series Gran Coupe on AskCar.

Similar cars

21 other 2023 BMW 4 Series Gran Coupe M Sport 2.0 petrol automatic coupes are for sale at UK dealers, from £23,990 to £33,498, as of 8 November 2026.

The 3 closest to this car in mileage:

• 2023 BMW 4 Series Gran Coupe M Sport, 2.0 petrol coupe, grey. Mileage: 21,129 miles. Price: £30,500, £610 more than this car. Dealer: Listers BMW King's Lynn in King's Lynn. AskCar page: https://askcar.co.uk/car/bmw-4-series-gran-coupe-2023-ba0f67b34b3a
• 2023 BMW 4 Series Gran Coupe M Sport, 2.0 petrol coupe, grey. Mileage: 21,350 miles. Price: £29,500, £390 less than this car. Dealer: Sytner Select Wakefield in Wakefield. AskCar page: https://askcar.co.uk/car/bmw-4-series-gran-coupe-2023-5b053d259189
• 2023 BMW 4 Series Gran Coupe M Sport, 2.0 petrol coupe, grey. Mileage: 20,873 miles. Price: £30,498, £608 more than this car. Dealer: Arnold Clark Stirling Volvo / GWM / BYD in Stirling. AskCar page: https://askcar.co.uk/car/bmw-4-series-gran-coupe-2023-b136427b4c74