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: 52,000 miles
• Fuel: Diesel
• Body: Convertible, 2 doors, 4 seats
• Engine: 3.0 litres, 309 bhp
• Gearbox: Automatic
• Drive: Four-wheel drive
• Colour: Grey
• CO2: 169 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2018 BMW 4 Series M Sport has covered 52,000 miles, around 11,000 fewer miles than is typical for its age. The dealer is asking £18,880, which is £690 below the AskCar estimate of £19,570. To work out the AskCar estimate, we analyse UK dealer adverts for 1,825 BMW 4 Series cars across different ages and specifications. We first recorded this car for sale 9 days ago. The government's MOT record matches its advertised mileage. You can find this car at Albury Motor Co in Guildford. 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: £690 (3%) under the AskCar estimate of £19,570.

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 3.0 diesel engine is typically advertised at £17,500: the median of the 83 for sale on AskCar, as of 7 November 2026.

Time on sale

This 2018 BMW 4 Series has been on sale for at least 9 days.

Price history

AskCar first saw this advert on 29 October 2026 at £18,880. 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 3 March 2027.

It failed its MOT on 4 February 2026 (horn not working; nearside rear brake cable insecure handbrake; offside rear brake cable insecure handbrake) and passed 8 days later, on 12 February 2026.

Advisories at the latest test: offside rear shock absorbers has light misting of oil.

Mileage at that test: 47,788 miles, which matches the advertised 52,000 miles.

Advertised mileage is about 11,000 miles lower 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 7 November 2026.

The 3 closest to this car in mileage:

• 2018 BMW 4 Series M Sport, 3.0 diesel convertible, grey. Mileage: 55,000 miles. Price: £16,990, £1,890 less than this car. Dealer: Murley Auto Murley Omoda Jaecoo Warwick in Stratford-upon-Avon. AskCar page: https://askcar.co.uk/car/bmw-4-series-2018-ef0f3539ff88
• 2018 BMW 4 Series M Sport, 3.0 diesel convertible, red. Mileage: 48,143 miles. Price: £17,495, £1,385 less than this car. Dealer: SG Petch Richmond in Richmond. AskCar page: https://askcar.co.uk/car/bmw-4-series-2018-180e268d04ce
• 2018 BMW 4 Series M Sport, 3.0 diesel convertible, grey. Mileage: 47,132 miles. Price: £17,570, £1,310 less than this car. Dealer: Evans Halshaw BYD Shrewsbury in Shrewsbury. AskCar page: https://askcar.co.uk/car/bmw-4-series-2018-9e89a4930126

• The nearest: 2018 BMW 4 Series M Sport, 3.0 diesel convertible, grey, 29 miles from this car. Mileage: 31,000 miles. Price: £18,999, £119 more than this car. Dealer: Cars Of London in London. AskCar page: https://askcar.co.uk/car/bmw-4-series-2018-71b3e18742c5