2018 BMW M4 3.0 BiTurbo Competition

Price: £31,995. Fair price: £1,183 (3%) under the AskCar estimate of £33,178, our expected asking price for this car from its model, age, mileage and specification, drawing on 724 priced BMW M4 adverts on AskCar as of 14 November 2026.

AskCar lists 741 used BMW M4 from 473 UK dealerships, as of 14 November 2026.

Overview

  • Make: BMW
  • Model: M4
  • Trim: Competition
  • Version: 3.0 BiTurbo Competition DCT RWD Euro 6 (s/s) 2dr (444 bhp)
  • Year: 2018
  • Mileage: 30,750 miles
  • Fuel: Petrol
  • Body: Convertible, 2 doors, 4 seats
  • Engine: 3.0 litres, 444 bhp
  • Gearbox: Automatic (DCT)
  • Drive: Rear-wheel drive
  • Colour: Grey
  • CO2: 203 g/km
  • Emissions standard: Euro 6, ULEZ compliant

About this car

This 2018 BMW M4 Competition has covered 30,750 miles, around 20,100 fewer miles than is typical for its age. The AskCar estimate for this car is £33,178. It is priced at £31,995, which is £1,183 below that estimate. The AskCar estimate uses 724 UK dealer adverts for the BMW M4, with adjustments for age, mileage, trim, engine and other specifications. It first appeared in our advert records 1 day ago. The seller is Position One Motor Company, based in Leatherhead. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 14 November 2026.

How we estimate prices and check cars

Position One Motor Company is rated 4.7 out of 5 on Google.

Price

Fair price: £1,183 (3%) under the AskCar estimate of £33,178.

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 724 priced BMW M4 adverts across different ages and specifications, as of 14 November 2026.

A 2018 BMW M4 with the 3.0 petrol engine is typically advertised at £29,200: the median of the 68 for sale on AskCar, as of 14 November 2026.

Time on sale

AskCar first saw this 2018 BMW M4 advertised 1 day ago. About half of 2018 BMW M4 cars are gone from sale within a month of being advertised: 48 of the 95 first advertised between 14 July 2026 and 11 October 2026.

Price history

AskCar first saw this advert on 13 November 2026 at £31,995. Its asking price has not changed.

Mileage and MOT

Advertised mileage is about 20,100 miles lower than the median mileage of a 2018 BMW M4 on AskCar.

Similar cars

6 other 2018 BMW M4 Competition 3.0 petrol automatic convertibles are for sale at UK dealers, from £22,500 to £33,995, as of 14 November 2026.

The 3 closest to this car in mileage:

  • 2018 BMW M4 Competition, 3.0 petrol convertible, blue. Mileage: 29,000 miles. Price: £33,995, £2,000 more than this car. Dealer: V G Performance Cars in Andover. AskCar page: https://askcar.co.uk/car/bmw-m4-2018-5e8d80e9bae5
  • 2018 BMW M4 Competition, 3.0 petrol convertible, white. Mileage: 56,483 miles. Price: £26,985, £5,010 less than this car. Dealer: IM Car Supermarket in Dunstable. AskCar page: https://askcar.co.uk/car/bmw-m4-2018-68911ea98092
  • 2018 BMW M4 Competition, 3.0 petrol convertible, blue. Mileage: 58,000 miles. Price: £28,450, £3,545 less than this car. Dealer: Motorexe in Redbridge. AskCar page: https://askcar.co.uk/car/bmw-m4-2018-aa5ff0d10d71

Browse all BMW M4 cars for sale · 2018 BMW M4 price guide

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Photos

55 photos of this car are on its AskCar page.

As of 14 November 2026, AskCar lists 600,711 cars and vans from 12,770 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.