2018 BMW 4 Series 3.0 435d M Sport

Overview

• Make: BMW
• Model: 4 Series
• Trim: M Sport
• Version: 3.0 435d M Sport Auto 4WD Euro 6 (s/s) 2dr (309 bhp)
• Year: 2018
• Mileage: 71,411 miles
• Fuel: Diesel
• Body: Convertible, 2 doors, 4 seats
• Engine: 3.0 litres, 309 bhp
• Gearbox: Automatic
• Drive: Four-wheel drive
• Colour: Black
• CO2: 169 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 71,411 miles, this 2018 BMW 4 Series M Sport has covered about 8,400 more miles than other 2018 BMW 4 Series cars. The AskCar estimate for this car is £17,204. It is priced at £17,990, which is £786 above that estimate. The AskCar estimate uses 1,826 UK dealer adverts for the BMW 4 Series, with adjustments for age, mileage, trim, engine and other specifications. We first saw this car advertised 23 days ago. Its asking price has since fallen by £500. We checked its advertised mileage against the government's MOT record, and they match. It is for sale at Brampton Motor Group in Huntingdon. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 6 November 2026.

How we estimate prices and check cars

Price

Fair price: £786 (4%) over the AskCar estimate of £17,204.

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 1,826 priced BMW 4 Series adverts across different ages and specifications, as of 6 November 2026.

A 2018 BMW 4 Series with the 3.0 diesel engine is typically advertised at £17,500: the median of the 85 for sale on AskCar, as of 6 November 2026.

Time on sale

This 2018 BMW 4 Series has been on sale for at least 23 days.

Price history

AskCar first saw this advert on 14 October 2026 at £18,490. Its asking price is now £17,990, £500 less. The latest price cut was seen on 25 October 2026.

Price changes recorded:

• 14 October 2026: £18,490
• 21 October 2026: £18,190
• 25 October 2026: £17,990

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 6 November 2026: valid until 2 February 2027.

It has had 6 MOTs. The latest, on 24 January 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 68,516 miles, which matches the advertised 71,411 miles.

Advertised mileage is about 8,400 miles higher than the median mileage of a 2018 BMW 4 Series on AskCar.

Similar cars

18 other 2018 BMW 4 Series M Sport 3.0 diesel automatic convertibles are for sale at UK dealers, from £12,795 to £20,100, as of 6 November 2026.

The 3 closest to this car in mileage:

• 2018 BMW 4 Series M Sport, 3.0 diesel convertible, blue. Mileage: 70,430 miles. Price: £19,400, £1,410 more than this car. Dealer: Brook Cars Company in Telford. AskCar page: https://askcar.co.uk/car/bmw-4-series-2018-49388ee41d84
• 2018 BMW 4 Series M Sport, 3.0 diesel convertible, blue. Mileage: 70,000 miles. Price: £14,995, £2,995 less than this car. Dealer: Moss Prestige in Huddersfield. AskCar page: https://askcar.co.uk/car/bmw-4-series-2018-cfe3b6a5c5f7
• 2018 BMW 4 Series M Sport, 3.0 diesel convertible, blue. Mileage: 65,729 miles. Price: £19,950, £1,960 more than this car. Dealer: Sytner Stevenage BMW in Stevenage. AskCar page: https://askcar.co.uk/car/bmw-4-series-2018-d5bc702743e0

• The nearest: 2018 BMW 4 Series M Sport, 3.0 diesel convertible, white, 14 miles from this car. Mileage: 43,935 miles. Price: £19,490, £1,500 more than this car. Dealer: Fox's Motor Co in Oundle. AskCar page: https://askcar.co.uk/car/bmw-4-series-2018-55c338323dfd