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: 60,000 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

With 60,000 miles on the clock, this 2018 BMW 4 Series M Sport has done roughly 3,000 fewer miles than a typical 2018 BMW 4 Series. Priced at £15,995, it is advertised £1,219 above the AskCar estimate of £14,776. The AskCar estimate draws on 1,814 BMW 4 Series adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We first saw this car advertised 78 days ago. Its asking price has since fallen by £1,000. According to the government's MOT record, its advertised mileage is consistent with the latest test. You can find this car at Echelon Motors in Bournemouth. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 4 November 2026.

How we estimate prices and check cars

Price

Above the going rate: £1,219 (8%) over the AskCar estimate of £14,776.

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 1,814 priced BMW 4 Series adverts across different ages and specifications, as of 4 November 2026.

A 2018 BMW 4 Series with the 2.0 diesel engine is typically advertised at £14,500: the median of the 112 for sale on AskCar, as of 4 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 18 August 2026 at £16,995. Its asking price is now £15,995, £1,000 less. The latest price cut was seen on 3 November 2026.

Price changes recorded:

• 18 August 2026: £16,995
• 29 September 2026: £15,995
• 17 October 2026: £16,995
• 28 October 2026: £16,495
• 3 November 2026: £15,995

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 4 November 2026: valid until 5 December 2026.

It failed its MOT on 5 December 2025 (nearside rear tyre tread depth below requirements of 1.6mm 255/35/R19; nearside front tyre tread depth below requirements of 1.6mm 225/40/R19) and passed 1 day later, on 6 December 2025.

Advisories at the latest test: engine undertray missing; offside rear tyre worn close to legal limit/worn on edge worn on inner edge; nearside front shock absorbers has a reduced damping effect.

Mileage at that test: 48,539 miles, which matches the advertised 60,000 miles.

Advertised mileage is about 3,000 miles lower than the median mileage of a 2018 BMW 4 Series on AskCar.

Similar cars

11 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 4 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, £996 less 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: 63,918 miles. Price: £13,490, £2,505 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, red. Mileage: 49,648 miles. Price: £16,495, £500 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, grey, 55 miles from this car. Mileage: 28,699 miles. Price: £17,995, £2,000 more than this car. Dealer: The Plough Garage in Farnham. AskCar page: https://askcar.co.uk/car/bmw-4-series-2018-6ce2940f3e23