2018 BMW M4 3.0 BiTurbo

Overview

• Make: BMW
• Model: M4
• Version: 3.0 BiTurbo DCT RWD Euro 6 (s/s) 2dr (425 bhp)
• Year: 2018
• Mileage: 89,200 miles
• Fuel: Petrol
• Body: Convertible, 2 doors, 4 seats
• Engine: 3.0 litres, 425 bhp
• Gearbox: Automatic (DCT)
• Drive: Rear-wheel drive
• Colour: White
• CO2: 203 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 89,200 miles on the clock, this 2018 BMW M4 has done roughly 36,100 more miles than a typical 2018 BMW M4. The dealer is asking £20,495, which is £1,947 below the AskCar estimate of £22,442. To work out the AskCar estimate, we analyse UK dealer adverts for 738 BMW M4 cars across different ages and specifications. We first recorded this car for sale 6 days ago. Its advertised mileage matches the government's MOT record. It is advertised by BM Automotive (Sw) in Saltash. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 2 November 2026.

How we estimate prices and check cars

Price

Good value: £1,947 (8%) under the AskCar estimate of £22,442.

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 738 priced BMW M4 adverts across different ages and specifications, as of 2 November 2026.

A 2018 BMW M4 with the 3.0 petrol engine is typically advertised at £29,000: the median of the 68 for sale on AskCar, as of 2 November 2026.

Time on sale

AskCar first saw this 2018 BMW M4 advertised 6 days ago. About half of 2018 BMW M4 cars are gone from sale within a month of being advertised: 44 of the 85 first advertised between 14 July 2026 and 29 September 2026.

Price history

AskCar first saw this advert on 27 October 2026 at £20,495. 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 2 November 2026: valid until 22 February 2027.

It has had 7 MOTs. The latest, on 12 February 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 85,592 miles, which matches the advertised 89,200 miles.

Advertised mileage is about 36,100 miles higher than the median mileage of a 2018 BMW M4 on AskCar.