2023 BMW M3 3.0 Competition

Overview

• Make: BMW
• Model: M3
• Trim: Competition
• Version: 3.0 Competition Auto 6dr M
• Year: 2023
• Mileage: 12,400 miles
• Fuel: Petrol
• Body: Estate, 6 doors
• Engine: 3.0 litres
• Gearbox: Automatic
• Colour: Grey
• CO2: 234 g/km

About this car

At 12,400 miles, this 2023 BMW M3 Competition has covered about 8,600 fewer miles than other 2023 BMW M3 cars. Its asking price of £66,750 is £8,520 above the AskCar estimate of £58,230. 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 33 days ago. Its asking price has since fallen by £3,135. The seller is Hedin Automotive Bromley BMW, based in Bromley. 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: £8,520 (14%) over the AskCar estimate of £58,230.

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 2023 BMW M3 with the 3.0 petrol engine is typically advertised at £64,300: the median of the 115 for sale on AskCar, as of 2 November 2026.

Time on sale

This 2023 BMW M3 has been on sale for at least 33 days.

Price history

AskCar first saw this advert on 30 September 2026 at £69,885. Its asking price is now £66,750, £3,135 less. The latest price cut was seen on 25 October 2026.

Price changes recorded:

• 30 September 2026: £69,885
• 13 October 2026: £68,850
• 20 October 2026: £68,000
• 25 October 2026: £66,750

Mileage and MOT

Advertised mileage is about 8,600 miles lower than the median mileage of a 2023 BMW M3 on AskCar.

Similar cars

34 other 2023 BMW M3 Competition 3.0 petrol automatic estates are for sale at UK dealers, from £56,949 to £77,995, as of 2 November 2026.

The 3 closest to this car in mileage:

• 2023 BMW M3 Competition, 3.0 petrol estate, yellow. Mileage: 12,622 miles. Price: £66,995, £245 more than this car. Dealer: SD Automotive in Sutton in Ashfield. AskCar page: https://askcar.co.uk/car/bmw-m3-2023-6f6cd95a76a2
• 2023 BMW M3 Competition, 3.0 petrol estate, blue. Mileage: 12,900 miles. Price: £65,000, £1,750 less than this car. Dealer: Broadoak Performance Cars in Canterbury. AskCar page: https://askcar.co.uk/car/bmw-m3-2023-8052b1f2755f
• 2023 BMW M3 Competition, 3.0 petrol estate, yellow. Mileage: 11,143 miles. Price: £64,900, £1,850 less than this car. Dealer: John Holland Sales in Sheffield. AskCar page: https://askcar.co.uk/car/bmw-m3-2023-a5d383b7c244

• The nearest: 2023 BMW M3 Competition, 3.0 petrol estate, green, 6 miles from this car. Mileage: 24,700 miles. Price: £65,500, £1,250 less than this car. Dealer: Prestige Cars Kent in Bromley. AskCar page: https://askcar.co.uk/car/bmw-m3-2023-dd7df47716b5