2018 BMW M3 3.0 BiTurbo Competition

Overview

• Make: BMW
• Model: M3
• Trim: Competition
• Version: 3.0 BiTurbo Competition DCT RWD Euro 6 (s/s) 4dr
• Year: 2018
• Mileage: 36,000 miles
• Fuel: Petrol
• Body: Saloon, 4 doors, 5 seats
• Engine: 3.0 litres
• Gearbox: Automatic (DCT)
• Drive: Rear-wheel drive
• Colour: Black
• CO2: 194 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 36,000 miles on the clock, this 2018 BMW M3 Competition has done roughly 12,000 fewer miles than a typical 2018 BMW M3. The dealer is asking £42,995, which is £3,255 above the AskCar estimate of £39,740. To work out the AskCar estimate, we analyse UK dealer adverts for 756 BMW M3 cars across different ages and specifications. It first appeared in our advert records 158 days ago. The seller is A C G Motors, based in Manchester. 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

Above the going rate: £3,255 (8%) over the AskCar estimate of £39,740.

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 756 priced BMW M3 adverts across different ages and specifications, as of 2 November 2026.

A 2018 BMW M3 with the 3.0 petrol engine is typically advertised at £37,500: the median of the 26 for sale on AskCar, as of 2 November 2026.

Time on sale

This 2018 BMW M3 has been on sale for at least 158 days.

Price history

AskCar first saw this advert on 28 May 2026 at £42,995. Its asking price has not changed.

Mileage and MOT

Advertised mileage is about 12,000 miles lower than the median mileage of a 2018 BMW M3 on AskCar.

Similar cars

18 other 2018 BMW M3 Competition 3.0 petrol automatic saloons are for sale at UK dealers, from £32,495 to £49,500, as of 2 November 2026.

The 3 closest to this car in mileage:

• 2018 BMW M3 Competition, 3.0 petrol saloon, blue. Mileage: 36,178 miles. Price: £36,995, £6,000 less than this car. Dealer: EAG Specialist Cars in St Neots. AskCar page: https://askcar.co.uk/car/bmw-m3-2018-d48118d22abb
• 2018 BMW M3 Competition, 3.0 petrol saloon, white. Mileage: 34,159 miles. Price: £42,500, £495 less than this car. Dealer: Sytner Chigwell BMW in Chigwell. AskCar page: https://askcar.co.uk/car/bmw-m3-2018-e17fe0dd1d2f
• 2018 BMW M3 Competition, 3.0 petrol saloon, grey. Mileage: 27,652 miles. Price: £39,860, £3,135 less than this car. Dealer: Oakdene Collection in Alfreton. AskCar page: https://askcar.co.uk/car/bmw-m3-2018-a4e09a054557

• The nearest: 2018 BMW M3 Competition, 3.0 petrol saloon, black, 16 miles from this car. Mileage: 64,600 miles. Price: £33,995, £9,000 less than this car. Dealer: CSH Performance in Elland. AskCar page: https://askcar.co.uk/car/bmw-m3-2018-55d0484af922