2018 BMW M3 3.0 Competition

Overview

• Make: BMW
• Model: M3
• Trim: Competition
• Version: 3.0 Competition DCT RWD Euro 6 4dr
• Year: 2018
• Mileage: 8,393 miles
• Fuel: Petrol
• Body: Saloon, 4 doors, 5 seats
• Engine: 3.0 litres
• Gearbox: Automatic (DCT)
• Drive: Rear-wheel drive
• Colour: White
• CO2: 194 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 8,393 miles, this 2018 BMW M3 Competition has covered about 39,600 fewer miles than other 2018 BMW M3 cars. Priced at £49,500, it is advertised £2,828 above the AskCar estimate of £46,672. The AskCar estimate uses 756 UK dealer adverts for the BMW M3, with adjustments for age, mileage, trim, engine and other specifications. It first appeared in our advert records 10 days ago. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Sytner Warwick BMW, based in Warwick. 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: £2,828 (6%) over the AskCar estimate of £46,672.

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 10 days.

Price history

AskCar first saw this advert on 23 October 2026 at £49,500. Its asking price has not changed.

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: valid until 29 March 2027.

It has had 7 MOTs. The latest, on 30 March 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 7,973 miles, which matches the advertised 8,393 miles.

Advertised mileage is about 39,600 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 £44,995, 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, £9,505 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, blue. Mileage: 23,084 miles. Price: £44,995, £4,505 less 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, red. Mileage: 27,500 miles. Price: £44,995, £4,505 less than this car. Dealer: Que Automotive in Colchester. AskCar page: https://askcar.co.uk/car/bmw-m3-2018-c6c0547eb9c9

• The nearest: 2018 BMW M3 Competition, 3.0 petrol saloon, white, 3 miles from this car. Mileage: 63,500 miles. Price: £32,997, £16,503 less than this car. Dealer: Country Car in Warwick. AskCar page: https://askcar.co.uk/car/bmw-m3-2018-3de291bc8674