2018 BMW M4 3.0 BiTurbo Competition
Price: £24,999. Fair price: £1,322 (5%) under the AskCar estimate of £26,321, our expected asking price for this car from its model, age, mileage and specification, drawing on 738 priced BMW M4 adverts on AskCar as of 2 November 2026.
AskCar lists 761 used BMW M4 from 481 UK dealerships, as of 2 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: 72,000 miles
- Fuel: Petrol
- Body: Convertible, 2 doors, 4 seats
- Engine: 3.0 litres, 444 bhp
- Gearbox: Automatic (DCT)
- Drive: Rear-wheel drive
- Colour: White
- CO2: 203 g/km
- Emissions standard: Euro 6, ULEZ compliant
About this car
At 72,000 miles, this 2018 BMW M4 Competition has covered about 18,900 more miles than other 2018 BMW M4 cars. The dealer is asking £24,999, which is £1,322 below the AskCar estimate of £26,321. 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. It is for sale at Waterways Prestige in Leighton Buzzard. How to contact the dealer and its opening hours are on this AskCar page.
Stock data as of 2 November 2026.
Price
Fair price: £1,322 (5%) under the AskCar estimate of £26,321.
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 £24,999. Its asking price has not changed.
Mileage and MOT
Advertised mileage is about 18,900 miles higher than the median mileage of a 2018 BMW M4 on AskCar.
Similar cars
7 other 2018 BMW M4 Competition 3.0 petrol automatic convertibles are for sale at UK dealers, from £22,500 to £30,990, as of 2 November 2026.
The 3 closest to this car in mileage:
- 2018 BMW M4 Competition, 3.0 petrol convertible, white. Mileage: 70,000 miles. Price: £24,995, the same price as this car. Dealer: R & S Car Sales in Perth. AskCar page: https://askcar.co.uk/car/bmw-m4-2018-f202cf510f66
- 2018 BMW M4 Competition, 3.0 petrol convertible, white. Mileage: 68,807 miles. Price: £26,495, £1,496 more than this car. Dealer: Roadside Motors Lurgan in Lurgan. AskCar page: https://askcar.co.uk/car/bmw-m4-2018-bf6214d532fe
- 2018 BMW M4 Competition, 3.0 petrol convertible, blue. Mileage: 58,000 miles. Price: £28,450, £3,451 more than this car. Dealer: Motorexe in Redbridge. AskCar page: https://askcar.co.uk/car/bmw-m4-2018-aa5ff0d10d71
- The nearest: 2018 BMW M4 Competition, 3.0 petrol convertible, white, 6 miles from this car. Mileage: 56,483 miles. Price: £27,485, £2,486 more than this car. Dealer: IM Car Supermarket in Dunstable. AskCar page: https://askcar.co.uk/car/bmw-m4-2018-68911ea98092
Browse all BMW M4 cars for sale · 2018 BMW M4 price guide
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As of 2 November 2026, AskCar lists 586,270 cars and vans from 12,920 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.