2018 BMW M3 3.0 Competition

Overview

• Make: BMW
• Model: M3
• Trim: Competition
• Version: 3.0 Competition DCT RWD Euro 6 4dr (443 bhp)
• Year: 2018
• Mileage: 57,000 miles
• Fuel: Petrol
• Body: Saloon, 4 doors, 5 seats
• Engine: 3.0 litres, 443 bhp
• Gearbox: Automatic (DCT)
• Drive: Rear-wheel drive
• Colour: Blue
• CO2: 194 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2018 BMW M3 Competition is advertised with 57,000 miles, approximately 9,000 above the typical mileage for its age. The dealer is asking £38,495, which is £2,116 above the AskCar estimate of £36,379. To work out the AskCar estimate, we analyse UK dealer adverts for 756 BMW M3 cars across different ages and specifications. We first saw this car advertised 106 days ago. Its asking price has since fallen by £1,405. The government's MOT record matches its advertised mileage. It is advertised by Carderi Motors in Wembley. 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: £2,116 (5%) over the AskCar estimate of £36,379.

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 106 days.

Price history

AskCar first saw this advert on 19 July 2026 at £39,900. Its asking price is now £38,495, £1,405 less. The latest price cut was seen on 23 October 2026.

Price changes recorded:

• 19 July 2026: £39,900
• 13 August 2026: £39,495
• 13 September 2026: £39,100
• 29 September 2026: £38,900
• 23 October 2026: £38,495

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: valid until 5 December 2026.

It has had 3 MOTs. The latest, on 6 December 2025, passed.

There were no advisories at the latest test.

Mileage at that test: 51,777 miles, which matches the advertised 57,000 miles.

Advertised mileage is about 9,000 miles higher 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, grey. Mileage: 58,400 miles. Price: £34,995, £3,500 less than this car. Dealer: Wimbledon Carriage Company in East Horsley. AskCar page: https://askcar.co.uk/car/bmw-m3-2018-fd6b422a43c7
• 2018 BMW M3 Competition, 3.0 petrol saloon, black. Mileage: 52,300 miles. Price: £37,999, £496 less than this car. Dealer: TDC Collection in Watford. AskCar page: https://askcar.co.uk/car/bmw-m3-2018-c757fc6150ac
• 2018 BMW M3 Competition, 3.0 petrol saloon, white. Mileage: 63,400 miles. Price: £34,995, £3,500 less than this car. Dealer: Motors For Less in Bradford. AskCar page: https://askcar.co.uk/car/bmw-m3-2018-255ff22bf136