2017 BMW 4 Series 2.0 420d M Sport

Overview

• Make: BMW
• Model: 4 Series
• Trim: M Sport
• Version: 2.0 420d M Sport Auto RWD Euro 6 (s/s) 2dr (187 bhp)
• Year: 2017
• Mileage: 90,735 miles
• Fuel: Diesel
• Body: Convertible, 2 doors, 4 seats
• Engine: 2.0 litres, 187 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: Silver
• CO2: 124 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2017 BMW 4 Series M Sport is advertised with 90,735 miles, approximately 17,600 above the typical mileage for its age. Its asking price of £10,850 is £361 below the AskCar estimate of £11,211. The AskCar estimate uses 1,787 UK dealer adverts for the BMW 4 Series, with adjustments for age, mileage, trim, engine and other specifications. We first saw this car advertised 39 days ago. Its asking price has since fallen by £800. According to the government's MOT record, its advertised mileage is consistent with the latest test. It is advertised by Car Planet Barnet in New Southgate. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 2 November 2026.

How we estimate prices and check cars

Price

Fair price: £361 (3%) under the AskCar estimate of £11,211.

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 1,787 priced BMW 4 Series adverts across different ages and specifications, as of 2 November 2026.

A 2017 BMW 4 Series with the 2.0 diesel engine is typically advertised at £12,500: the median of the 117 for sale on AskCar, as of 2 November 2026.

Time on sale

This 2017 BMW 4 Series has been on sale for at least 39 days.

Price history

AskCar first saw this advert on 24 September 2026 at £11,650. Its asking price is now £10,850, £800 less. The latest price cut was seen on 1 November 2026.

Price changes recorded:

• 24 September 2026: £11,650
• 19 October 2026: £11,350
• 26 October 2026: £11,050
• 1 November 2026: £10,850

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: valid until 29 July 2027.

It failed its MOT on 6 July 2026 (windscreen damaged but not adversely affecting driver's view; offside rear tyre has ply or cords exposed) and passed 1 day later, on 7 July 2026.

Advisories at the latest test: windscreen damaged but not adversely affecting driver's view; front brake disc worn, pitted or scored, but not seriously weakened; rear brake disc worn, pitted or scored, but not seriously weakened; and 2 more.

Mileage at that test: 88,491 miles, which matches the advertised 90,735 miles.

Advertised mileage is about 17,600 miles higher than the median mileage of a 2017 BMW 4 Series on AskCar.

Similar cars

9 other 2017 BMW 4 Series M Sport 2.0 diesel automatic convertibles are for sale at UK dealers, from £11,688 to £17,495, as of 2 November 2026.

The 3 closest to this car in mileage:

• 2017 BMW 4 Series M Sport, 2.0 diesel convertible, blue. Mileage: 78,945 miles. Price: £11,688, £838 more than this car. Dealer: Junction 17 Cars Limited t/a Junction 17 Cars (Grantham) in Grantham. AskCar page: https://askcar.co.uk/car/bmw-4-series-2017-97a7be537c7a
• 2017 BMW 4 Series M Sport, 2.0 diesel convertible, grey. Mileage: 73,113 miles. Price: £11,800, £950 more than this car. Dealer: Car Planet Watford in Watford. AskCar page: https://askcar.co.uk/car/bmw-4-series-2017-598f690b5b23
• 2017 BMW 4 Series M Sport, 2.0 diesel convertible, grey. Mileage: 69,800 miles. Price: £14,500, £3,650 more than this car. Dealer: Mota in Caistor. AskCar page: https://askcar.co.uk/car/bmw-4-series-2017-787e15ee1c1e