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: 63,918 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 2018 BMW 4 Series M Sport has covered 63,918 miles. The AskCar estimate for this car is £14,367. It is priced at £13,490, which is £877 below that estimate. The AskCar estimate uses 1,833 UK dealer adverts for the BMW 4 Series, with adjustments for age, mileage, trim, engine and other specifications. It first appeared in our advert records 11 days ago. According to the government's MOT record, its advertised mileage is consistent with the latest test. It is for sale at Driven Car Sales in Thornaby. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 5 November 2026.

How we estimate prices and check cars

Price

Fair price: £877 (6%) under the AskCar estimate of £14,367.

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 1,833 priced BMW 4 Series adverts across different ages and specifications, as of 5 November 2026.

A 2018 BMW 4 Series with the 2.0 diesel engine is typically advertised at £14,500: the median of the 117 for sale on AskCar, as of 5 November 2026.

Time on sale

This 2018 BMW 4 Series has been on sale for at least 11 days.

Price history

AskCar first saw this advert on 25 October 2026 at £13,490. 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 5 November 2026: valid until 12 December 2026.

It has had 7 MOTs. The latest, on 13 December 2025, passed.

There were no advisories at the latest test.

Mileage at that test: 56,774 miles, which matches the advertised 63,918 miles.

Advertised mileage is about 1,500 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 £14,750 to £17,995, as of 5 November 2026.

The 3 closest to this car in mileage:

• 2018 BMW 4 Series M Sport, 2.0 diesel convertible, black. Mileage: 60,154 miles. Price: £14,999, £1,509 more than 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, £2,505 more than this car. Dealer: Echelon Motors in Bournemouth. AskCar page: https://askcar.co.uk/car/bmw-4-series-2018-b00571e4b59b
• 2018 BMW 4 Series M Sport, 2.0 diesel convertible, red. Mileage: 49,648 miles. Price: £16,495, £3,005 more than this car. Dealer: Motoring WAY in Abertillery. AskCar page: https://askcar.co.uk/car/bmw-4-series-2018-53bb1b8dd3c3

• The nearest: 2018 BMW 4 Series M Sport, 2.0 diesel convertible, white, 30 miles from this car. Mileage: 29,068 miles. Price: £16,996, £3,506 more than this car. Dealer: Lookers Car Hub South Shields in South Shields. AskCar page: https://askcar.co.uk/car/bmw-4-series-2018-0858ccb93e95