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: 67,456 miles
• Fuel: Diesel
• Body: Convertible, 2 doors, 4 seats
• Engine: 2.0 litres, 187 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: Blue
• CO2: 124 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 67,456 miles on the clock, this 2018 BMW 4 Series M Sport has done roughly 4,400 more miles than a typical 2018 BMW 4 Series. Its asking price of £14,995 is £1,020 above the AskCar estimate of £13,975. The AskCar estimate draws on 1,825 BMW 4 Series adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We have tracked this advert today. Its advertised mileage matches the government's MOT record. The seller is KTS Motor Company, based in Mold. 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: £1,020 (7%) over the AskCar estimate of £13,975.

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 2018 BMW 4 Series with the 2.0 diesel engine is typically advertised at £14,500: the median of the 120 for sale on AskCar, as of 7 November 2026.

Time on sale

AskCar first saw this 2018 BMW 4 Series advertised today. About 4 in 10 of 2018 BMW 4 Series cars are gone from sale within a month of being advertised: 134 of the 300 first advertised between 11 July 2026 and 4 October 2026.

Price history

AskCar first saw this advert on 7 November 2026 at £14,995. Its asking price has not changed.

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 7 November 2026: valid until 26 July 2027.

It has had 10 MOTs. The latest, on 13 July 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 67,149 miles, which matches the advertised 67,456 miles.

Advertised mileage is about 4,400 miles higher 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 £17,995, as of 7 November 2026.

The 3 closest to this car in mileage:

• 2018 BMW 4 Series M Sport, 2.0 diesel convertible, black. Mileage: 63,918 miles. Price: £13,490, £1,505 less than this car. Dealer: Driven Car Sales in Stockton-on-Tees. AskCar page: https://askcar.co.uk/car/bmw-4-series-2018-b0f30e957646
• 2018 BMW 4 Series M Sport, 2.0 diesel convertible, black. Mileage: 60,154 miles. Price: £14,999, the same price as this car. Dealer: cinch Corby in Corby. AskCar page: https://askcar.co.uk/car/bmw-4-series-2018-c4b7bd9be6b5
• 2018 BMW 4 Series M Sport, 2.0 diesel convertible, black. Mileage: 60,000 miles. Price: £15,995, £1,000 more than this car. Dealer: Echelon Motors in Bournemouth. AskCar page: https://askcar.co.uk/car/bmw-4-series-2018-b00571e4b59b

• The nearest: 2018 BMW 4 Series M Sport, 2.0 diesel convertible, grey, 44 miles from this car. Mileage: 49,000 miles. Price: £15,996, £1,001 more than this car. Dealer: Dave Fox Cars in Stone. AskCar page: https://askcar.co.uk/car/bmw-4-series-2018-3f2bb570f9dc