2026 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: 2026
• Mileage: 8,397 miles
• Fuel: Petrol
• Body: Convertible, 2 doors, 4 seats
• Engine: 2.0 litres, 181 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: White
• CO2: 154 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2026 BMW 4 Series M Sport has covered 8,397 miles, around 4,400 more miles than is typical for its age. The dealer is asking £45,950, which is £5,443 above the AskCar estimate of £40,507. To work out the AskCar estimate, we analyse UK dealer adverts for 1,833 BMW 4 Series cars across different ages and specifications. Since we first spotted the advert 161 days ago, the asking price has dropped by £7,550. The seller is Sytner Luton BMW, based in Luton. 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

Above the going rate: £5,443 (13%) over the AskCar estimate of £40,507.

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 2026 BMW 4 Series with the 2.0 petrol engine is typically advertised at £41,100: the median of the 66 for sale on AskCar, as of 5 November 2026.

Time on sale

This 2026 BMW 4 Series has been on sale for at least 161 days.

Price history

AskCar first saw this advert on 28 May 2026 at £53,500. Its asking price is now £45,950, £7,550 less. The latest price cut was seen on 26 October 2026.

Price changes recorded:

• 28 May 2026: £53,500
• 29 June 2026: £52,000
• 31 July 2026: £50,000
• 11 September 2026: £46,950
• 26 October 2026: £45,950

Mileage and MOT

MOT: first test not yet due.

Advertised mileage is about 4,400 miles higher than the median mileage of a 2026 BMW 4 Series on AskCar.

Similar cars

17 other 2026 BMW 4 Series M Sport 2.0 petrol automatic convertibles are for sale at UK dealers, from £40,000 to £48,465, as of 5 November 2026.

The 3 closest to this car in mileage:

• 2026 BMW 4 Series M Sport, 2.0 petrol convertible, grey. Mileage: 7,912 miles. Price: £42,850, £3,100 less than this car. Dealer: Sandal BMW Wakefield in Wakefield. AskCar page: https://askcar.co.uk/car/bmw-4-series-2026-f9408dce76c7
• 2026 BMW 4 Series M Sport, 2.0 petrol convertible, grey. Mileage: 7,136 miles. Price: £44,690, £1,260 less than this car. Dealer: Partridge BMW in Eastleigh. AskCar page: https://askcar.co.uk/car/bmw-4-series-2026-9503c00002c2
• 2026 BMW 4 Series M Sport, 2.0 petrol convertible, grey. Mileage: 6,848 miles. Price: £42,995, £2,955 less than this car. Dealer: Group 1 Farnborough BMW in Farnborough. AskCar page: https://askcar.co.uk/car/bmw-4-series-2026-b745900115be

• The nearest: 2026 BMW 4 Series M Sport, 2.0 petrol convertible, white, 15 miles from this car. Mileage: 4,370 miles. Price: £44,495, £1,455 less than this car. Dealer: Stratstone BMW Milton Keynes in Milton Keynes. AskCar page: https://askcar.co.uk/car/bmw-4-series-2026-97a7fc570743