2023 BMW M3 3.0 BiTurbo Competition

Price: £66,991. Fair price: £2,506 (3%) under the AskCar estimate of £69,497, 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 BiTurbo Competition Steptronic 4WD Euro 6 (s/s) 5dr Touring M (503 bhp)
  • Year: 2023
  • Mileage: 13,725 miles
  • Fuel: Petrol
  • Body: Estate, 5 doors, 5 seats
  • Engine: 3.0 litres, 503 bhp
  • Gearbox: Automatic (Steptronic)
  • Drive: Four-wheel drive
  • Colour: Grey
  • CO2: 232 g/km
  • Emissions standard: Euro 6, ULEZ compliant

About this car

This 2023 BMW M3 Competition has covered 13,725 miles, around 7,300 fewer miles than is typical for its age. Priced at £66,991, it is advertised £2,506 below the AskCar estimate of £69,497. To work out the AskCar estimate, we analyse UK dealer adverts for 756 BMW M3 cars across different ages and specifications. This car was first seen in our listings data 99 days ago. It is advertised by Magor Motor Company in Caldicot. 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: £2,506 (3%) under the AskCar estimate of £69,497.

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 99 days.

Price history

AskCar first saw this advert on 26 July 2026 at £66,991. Its asking price has not changed.

Mileage and MOT

Advertised mileage is about 7,300 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, blue. Mileage: 12,900 miles. Price: £65,000, £1,991 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: 12,622 miles. Price: £66,995, the same price as 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, grey. Mileage: 12,400 miles. Price: £66,750, £241 less than this car. Dealer: Hedin Automotive Bromley BMW in Bromley. AskCar page: https://askcar.co.uk/car/bmw-m3-2023-76debc49078f
  • The nearest: 2023 BMW M3 Competition, 3.0 petrol estate, grey, 26 miles from this car. Mileage: 30,000 miles. Price: £69,995, £3,004 more than this car. Dealer: Harris Automotive in Radstock. AskCar page: https://askcar.co.uk/car/bmw-m3-2023-62c77fdcc284

Browse all BMW M3 cars for sale · 2023 BMW M3 price guide

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Photos

22 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.