2018 BMW M3 3.0 Competition

Price: £44,995. Fair price: £1,908 (4%) over the AskCar estimate of £43,087, our expected asking price for this car from its model, age, mileage and specification, drawing on 756 priced BMW M3 adverts on AskCar as of 2 November 2026.

AskCar lists 811 used BMW M3 from 475 UK dealerships, as of 2 November 2026.

Overview

  • Make: BMW
  • Model: M3
  • Trim: Competition
  • Version: 3.0 Competition DCT RWD Euro 6 4dr
  • Year: 2018
  • Mileage: 23,084 miles
  • Fuel: Petrol
  • Body: Saloon, 4 doors, 5 seats
  • Engine: 3.0 litres
  • 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 23,084 miles, approximately 24,900 below the typical mileage for its age. Priced at £44,995, it is advertised £1,908 above the AskCar estimate of £43,087. The AskCar estimate uses UK dealer asking prices, including 756 BMW M3 adverts, and accounts for the car’s age, mileage and specification. We first recorded this car for sale 13 days ago. It is advertised by Appreciating Classics in Loddon. 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: £1,908 (4%) over the AskCar estimate of £43,087.

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 13 days.

Price history

AskCar first saw this advert on 20 October 2026 at £44,995. Its asking price has not changed.

Mileage and MOT

Advertised mileage is about 24,900 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, white. Mileage: 22,800 miles. Price: £39,995, £5,000 less than this car. Dealer: Hampton Car Sales in Milton Malsor. AskCar page: https://askcar.co.uk/car/bmw-m3-2018-ca2389ace152
  • 2018 BMW M3 Competition, 3.0 petrol saloon, red. Mileage: 27,500 miles. Price: £44,995, the same price as 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, grey. Mileage: 27,652 miles. Price: £39,860, £5,135 less than this car. Dealer: Oakdene Collection in Alfreton. AskCar page: https://askcar.co.uk/car/bmw-m3-2018-a4e09a054557

Browse all BMW M3 cars for sale · 2018 BMW M3 price guide

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Photos

20 photos of this car are on its AskCar page.

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.