2026 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: 2026
• Mileage: 5,030 miles
• Fuel: Petrol
• Body: Convertible, 2 doors, 4 seats
• Engine: 2.0 litres, 181 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: Grey
• CO2: 169 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2026 BMW 4 Series M Sport is advertised with 5,030 miles on the clock. The dealer is asking £42,400, which is £722 above the AskCar estimate of £41,678. To work out the AskCar estimate, we analyse UK dealer adverts for 1,825 BMW 4 Series cars across different ages and specifications. We first recorded this advert 37 days ago, and its asking price has since fallen by £1,891. The seller is Marshall BMW Bournemouth, based in Bournemouth. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 7 November 2026.

How we estimate prices and check cars

Price

Fair price: £722 (1%) over the AskCar estimate of £41,678.

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 1,825 priced BMW 4 Series adverts across different ages and specifications, as of 7 November 2026.

A 2026 BMW 4 Series with the 2.0 petrol engine is typically advertised at £41,000: the median of the 68 for sale on AskCar, as of 7 November 2026.

Time on sale

This 2026 BMW 4 Series has been on sale for at least 37 days.

Price history

AskCar first saw this advert on 1 October 2026 at £44,291. Its asking price is now £42,400, £1,891 less. The latest price cut was seen on 7 November 2026.

Price changes recorded:

• 1 October 2026: £44,291
• 3 October 2026: £44,500
• 9 October 2026: £44,800
• 10 October 2026: £44,500
• 17 October 2026: £44,100
• 24 October 2026: £43,300
• 28 October 2026: £42,900
• 7 November 2026: £42,400

Mileage and MOT

MOT: first test not yet due.

Advertised mileage is about 800 miles higher than the median mileage of a 2026 BMW 4 Series on AskCar.

Similar cars

16 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 7 November 2026.

The 3 closest to this car in mileage:

• 2026 BMW 4 Series M Sport, 2.0 petrol convertible, black. Mileage: 4,957 miles. Price: £46,500, £4,100 more than this car. Dealer: Sytner High Wycombe BMW in High Wycombe. AskCar page: https://askcar.co.uk/car/bmw-4-series-2026-f16b6bd08975
• 2026 BMW 4 Series M Sport, 2.0 petrol convertible, blue. Mileage: 5,229 miles. Price: £42,450, £50 more than this car. Dealer: Sytner Worcester BMW in Worcester. AskCar page: https://askcar.co.uk/car/bmw-4-series-2026-ac8f5aa3e2d0
• 2026 BMW 4 Series M Sport, 2.0 petrol convertible, blue. Mileage: 4,683 miles. Price: £46,490, £4,090 more than this car. Dealer: Lloyd Motor Group in Reading. AskCar page: https://askcar.co.uk/car/bmw-4-series-2026-66c1cfec54db

• The nearest: 2026 BMW 4 Series M Sport, 2.0 petrol convertible, grey, 28 miles from this car. Mileage: 7,136 miles. Price: £44,690, £2,290 more than this car. Dealer: Partridge BMW in Eastleigh. AskCar page: https://askcar.co.uk/car/bmw-4-series-2026-9503c00002c2