2018 BMW M4 3.0 BiTurbo Competition

Overview

• Make: BMW
• Model: M4
• Trim: Competition
• Version: 3.0 BiTurbo Competition DCT RWD Euro 6 (s/s) 2dr (444 bhp)
• Year: 2018
• Mileage: 56,483 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 56,483 miles, this 2018 BMW M4 Competition has covered about 3,400 more miles than other 2018 BMW M4 cars. Its asking price of £27,485 is £1,659 below the AskCar estimate of £29,144. The AskCar estimate uses 738 UK dealer adverts for the BMW M4, with adjustments for age, mileage, trim, engine and other specifications. Since we first spotted the advert 50 days ago, the asking price has dropped by £2,500. Its advertised mileage matches the government's MOT record. It is for sale at IM Car Supermarket in Luton. 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

Fair price: £1,659 (5%) under the AskCar estimate of £29,144.

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

This 2018 BMW M4 has been on sale for at least 50 days.

Price history

AskCar first saw this advert on 13 September 2026 at £29,985. Its asking price is now £27,485, £2,500 less. The latest price cut was seen on 16 October 2026.

Price changes recorded:

• 13 September 2026: £29,985
• 19 September 2026: £28,485
• 3 October 2026: £27,985
• 16 October 2026: £27,485

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: valid until 8 September 2027.

It failed its MOT on 22 August 2026 (nearside rear coil spring fractured or broken) and passed 3 days later, on 25 August 2026.

There were no advisories at the latest test.

Mileage at that test: 56,482 miles, which matches the advertised 56,483 miles.

Advertised mileage is about 3,400 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, blue. Mileage: 58,000 miles. Price: £28,450, £965 more than this car. Dealer: Motorexe in Redbridge. AskCar page: https://askcar.co.uk/car/bmw-m4-2018-aa5ff0d10d71
• 2018 BMW M4 Competition, 3.0 petrol convertible, white. Mileage: 68,807 miles. Price: £26,495, £990 less 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, white. Mileage: 70,000 miles. Price: £24,995, £2,490 less than this car. Dealer: R & S Car Sales in Perth. AskCar page: https://askcar.co.uk/car/bmw-m4-2018-f202cf510f66

• The nearest: 2018 BMW M4 Competition, 3.0 petrol convertible, white, 6 miles from this car. Mileage: 72,000 miles. Price: £24,999, £2,486 less than this car. Dealer: Waterways Prestige in Leighton Buzzard. AskCar page: https://askcar.co.uk/car/bmw-m4-2018-11c92b55e920