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: 27,652 miles
• Fuel: Petrol
• Body: Saloon, 4 doors, 5 seats
• Engine: 3.0 litres
• Gearbox: Automatic (DCT)
• Drive: Rear-wheel drive
• Colour: Grey
• CO2: 194 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2018 BMW M3 Competition has covered 27,652 miles, around 20,300 fewer miles than is typical for its age. The dealer is asking £39,860, which is £1,811 below the AskCar estimate of £41,671. To work out the AskCar estimate, we analyse UK dealer adverts for 756 BMW M3 cars across different ages and specifications. The asking price is now £5,120 lower than when we first recorded the advert 102 days ago. According to the government's MOT record, its advertised mileage is consistent with the latest test. You can find this car at Oakdene Collection in Alfreton. 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: £1,811 (4%) under the AskCar estimate of £41,671.

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 102 days.

Price history

AskCar first saw this advert on 23 July 2026 at £44,980. Its asking price is now £39,860, £5,120 less. The latest price cut was seen on 26 October 2026.

Price changes recorded:

• 24 July 2026: £44,980
• 5 August 2026: £44,940
• 7 August 2026: £43,980
• 14 August 2026: £43,940
• 20 August 2026: £43,480
• 24 August 2026: £43,420
• 25 August 2026: £43,380
• 26 August 2026: £43,340
• 29 August 2026: £42,980
• 4 September 2026: £42,940
• 10 September 2026: £41,980
• 12 September 2026: £41,940
• 18 September 2026: £41,880
• 23 September 2026: £41,480
• 2 October 2026: £41,780
• 8 October 2026: £40,980
• 16 October 2026: £40,940
• 20 October 2026: £39,980
• 22 October 2026: £39,940
• 26 October 2026: £39,860

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: valid until 24 May 2027.

It has had 8 MOTs. The latest, on 18 May 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 27,306 miles, which matches the advertised 27,652 miles.

Advertised mileage is about 20,300 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, red. Mileage: 27,500 miles. Price: £44,995, £5,135 more than this car. Dealer: Que Automotive in Colchester. AskCar page: https://askcar.co.uk/car/bmw-m3-2018-c6c0547eb9c9
• 2018 BMW M3 Competition, 3.0 petrol saloon, blue. Mileage: 23,084 miles. Price: £44,995, £5,135 more than this car. Dealer: Appreciating Classics in Loddon. AskCar page: https://askcar.co.uk/car/bmw-m3-2018-8897666a8893
• 2018 BMW M3 Competition, 3.0 petrol saloon, white. Mileage: 22,800 miles. Price: £39,995, £135 more than this car. Dealer: Hampton Car Sales in Milton Malsor. AskCar page: https://askcar.co.uk/car/bmw-m3-2018-ca2389ace152

• The nearest: 2018 BMW M3 Competition, 3.0 petrol saloon, grey, 26 miles from this car. Mileage: 70,000 miles. Price: £34,000, £5,860 less than this car. Dealer: Whitethor Cars in Coalville. AskCar page: https://askcar.co.uk/car/bmw-m3-2018-3c20bc5a8563