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: 33,887 miles
• Fuel: Diesel
• Body: Convertible, 2 doors, 4 seats
• Engine: 2.0 litres, 187 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: Black
• CO2: 124 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2017 BMW 4 Series M Sport has covered 33,887 miles, around 39,200 fewer miles than is typical for its age. The dealer is asking £16,800, which is £623 above the AskCar estimate of £16,177. To work out the AskCar estimate, we analyse UK dealer adverts for 1,787 BMW 4 Series cars across different ages and specifications. Since we first spotted the advert 88 days ago, the asking price has dropped by £700. The government's MOT record matches its advertised mileage. It is for sale at DP Cars in Torquay. 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: £623 (3%) over the AskCar estimate of £16,177.

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 88 days.

Price history

AskCar first saw this advert on 6 August 2026 at £17,500. Its asking price is now £16,800, £700 less. The latest price cut was seen on 23 October 2026.

Price changes recorded:

• 6 August 2026: £17,500
• 8 September 2026: £17,200
• 3 October 2026: £17,000
• 23 October 2026: £16,800

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: valid until 23 July 2027.

It failed its MOT on 30 June 2026 (nearside front tyre fouling a part of the vehicle; nearside front shock absorbers insecurely attached; nearside front inner road wheel badly distorted) and passed 7 days later, on 7 July 2026.

There were no advisories at the latest test.

Mileage at that test: 33,137 miles, which matches the advertised 33,887 miles.

Advertised mileage is about 39,200 miles lower 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 £10,850 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: 34,200 miles. Price: £17,495, £695 more than this car. Dealer: Grayswood Cars in Haslemere. AskCar page: https://askcar.co.uk/car/bmw-4-series-2017-d49198f0376d
• 2017 BMW 4 Series M Sport, 2.0 diesel convertible, blue. Mileage: 30,854 miles. Price: £17,000, £200 more than this car. Dealer: Junction 17 Cars (Rugby) in Rugby. AskCar page: https://askcar.co.uk/car/bmw-4-series-2017-27a7376e57b1
• 2017 BMW 4 Series M Sport, 2.0 diesel convertible, white. Mileage: 37,053 miles. Price: £15,850, £950 less than this car. Dealer: Drive Motor Retail drivedirect Leamington in Leamington Spa. AskCar page: https://askcar.co.uk/car/bmw-4-series-2017-c4f5897d4537

• The nearest: 2017 BMW 4 Series M Sport, 2.0 diesel convertible, grey, 108 miles from this car. Mileage: 48,977 miles. Price: £14,278, £2,522 less than this car. Dealer: Kiss Cars in Fareham. AskCar page: https://askcar.co.uk/car/bmw-4-series-2017-0d0a8b3e9006