2018 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: 2018
• Mileage: 49,000 miles
• Fuel: Diesel
• Body: Convertible, 2 doors, 4 seats
• Engine: 2.0 litres, 187 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: Grey
• CO2: 124 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2018 BMW 4 Series M Sport has covered 49,000 miles, around 14,300 fewer miles than is typical for its age. Priced at £15,996, it is advertised £229 above the AskCar estimate of £15,767. 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 78 days ago, the asking price has dropped by £754. The government's MOT record matches its advertised mileage. It is for sale at Dave Fox Cars in Stone. 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: £229 (1%) over the AskCar estimate of £15,767.

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 2018 BMW 4 Series with the 2.0 diesel engine is typically advertised at £14,800: the median of the 112 for sale on AskCar, as of 2 November 2026.

Time on sale

This 2018 BMW 4 Series has been on sale for at least 78 days.

Price history

AskCar first saw this advert on 16 August 2026 at £16,750. Its asking price is now £15,996, £754 less. The latest price cut was seen on 22 August 2026.

Price changes recorded:

• 16 August 2026: £16,750
• 22 August 2026: £15,996

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: valid until 27 December 2026.

It has had 8 MOTs. The latest, on 22 December 2025, passed.

Advisories at the latest test: front brake pad(s) wearing thin; rear brake pad(s) wearing thin; vehicle undertrays fitted.

Mileage at that test: 47,560 miles, which matches the advertised 49,000 miles.

Advertised mileage is about 14,300 miles lower than the median mileage of a 2018 BMW 4 Series on AskCar.

Similar cars

12 other 2018 BMW 4 Series M Sport 2.0 diesel automatic convertibles are for sale at UK dealers, from £13,490 to £18,489, as of 2 November 2026.

The 3 closest to this car in mileage:

• 2018 BMW 4 Series M Sport, 2.0 diesel convertible, red. Mileage: 49,648 miles. Price: £16,495, £499 more than this car. Dealer: Motoring WAY in Abertillery. AskCar page: https://askcar.co.uk/car/bmw-4-series-2018-53bb1b8dd3c3
• 2018 BMW 4 Series M Sport, 2.0 diesel convertible, black. Mileage: 44,939 miles. Price: £15,750, £246 less than this car. Dealer: Beechwood Prestige in Doncaster. AskCar page: https://askcar.co.uk/car/bmw-4-series-2018-39ba4ddf551d
• 2018 BMW 4 Series M Sport, 2.0 diesel convertible, grey. Mileage: 41,805 miles. Price: £15,000, £996 less than this car. Dealer: Cotswold Group Select in Tewkesbury. AskCar page: https://askcar.co.uk/car/bmw-4-series-2018-46fddfc27546

• The nearest: 2018 BMW 4 Series M Sport, 2.0 diesel convertible, blue, 30 miles from this car. Mileage: 24,000 miles. Price: £18,489, £2,493 more than this car. Dealer: AffordableCar in Tamworth. AskCar page: https://askcar.co.uk/car/bmw-4-series-2018-d163e4faae19