2023 BMW M4 3.0 BiTurbo Competition

Overview

• Make: BMW
• Model: M4
• Trim: Competition
• Version: 3.0 BiTurbo Competition Steptronic 4WD Euro 6 (s/s) 2dr M (503 bhp)
• Year: 2023
• Mileage: 23,500 miles
• Fuel: Petrol
• Body: Convertible, 2 doors, 4 seats
• Engine: 3.0 litres, 503 bhp
• Gearbox: Automatic (Steptronic)
• Drive: Four-wheel drive
• Colour: Grey
• CO2: 233 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 23,500 miles on the clock, this 2023 BMW M4 Competition has done roughly 4,700 more miles than a typical 2023 BMW M4. The AskCar estimate for this car is £54,264. It is priced at £54,989, which is £725 above that estimate. The AskCar estimate draws on 738 BMW M4 adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. Since we first spotted the advert 155 days ago, the asking price has dropped by £2,000. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is A6 Motors, based in Bedford. 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: £725 (1%) over the AskCar estimate of £54,264.

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 738 priced BMW M4 adverts across different ages and specifications, as of 2 November 2026.

A 2023 BMW M4 with the 3.0 petrol engine is typically advertised at £55,000: the median of the 82 for sale on AskCar, as of 2 November 2026.

Time on sale

This 2023 BMW M4 has been on sale for at least 155 days.

Price history

AskCar first saw this advert on 31 May 2026 at £56,989. Its asking price is now £54,989, £2,000 less. The latest price cut was seen on 8 October 2026.

Price changes recorded:

• 31 May 2026: £56,989
• 7 September 2026: £55,989
• 8 October 2026: £54,989

Mileage and MOT

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

It has had one MOT, on 3 June 2026, and passed.

There were no advisories at the latest test.

Mileage at that test: 23,778 miles, which matches the advertised 23,500 miles.

Advertised mileage is about 4,700 miles higher than the median mileage of a 2023 BMW M4 on AskCar.

Similar cars

28 other 2023 BMW M4 Competition 3.0 petrol automatic convertibles are for sale at UK dealers, from £47,898 to £59,994, as of 2 November 2026.

The 3 closest to this car in mileage:

• 2023 BMW M4 Competition, 3.0 petrol convertible, grey. Mileage: 22,829 miles. Price: £53,000, £1,989 less than this car. Dealer: Sytner Chigwell BMW in Chigwell. AskCar page: https://askcar.co.uk/car/bmw-m4-2023-3cb9e86f2d45
• 2023 BMW M4 Competition, 3.0 petrol convertible, blue. Mileage: 24,974 miles. Price: £49,599, £5,390 less than this car. Dealer: cinch in Hook. AskCar page: https://askcar.co.uk/car/bmw-m4-2023-bf788ac665fb
• 2023 BMW M4 Competition, 3.0 petrol convertible, grey. Mileage: 25,413 miles. Price: £55,999, £1,010 more than this car. Dealer: Sandles Cars in King's Lynn. AskCar page: https://askcar.co.uk/car/bmw-m4-2023-8186a5646f43

• The nearest: 2023 BMW M4 Competition, 3.0 petrol convertible, blue, 5 miles from this car. Mileage: 11,000 miles. Price: £56,950, £1,961 more than this car. Dealer: HCS Trading in Luton. AskCar page: https://askcar.co.uk/car/bmw-m4-2023-e21952c2bc89