2023 BMW M3

3.0 Competition Auto 5dr M

£66,970

Above the going rate: £6,138 over the typical £60,832 for this model, age and mileage, drawing on 775 adverts of this make and model.

Overview

Make: BMW
Model: M3
Trim: COMPETITION
Version: 3.0 Competition Auto 5dr M
Mileage: 30,456 miles
Year: 2023
Fuel type: Petrol
Engine: 3.0 L
Gearbox: Automatic
CO2: 232 g/km
Colour: Blue
Doors: 5
Engine badge: Competition

About this car

At 30,456 miles, this 2023 BMW M3 Competition has covered about 8,400 more miles than other 2023 BMW M3 cars. Its asking price of £66,970 is £6,138 above our estimate of £60,832. We use UK dealer asking prices, including 775 BMW M3 listings, and account for the car’s age, mileage and specification. This car was first seen in our listings data 17 days ago. It is for sale at Sytner Harold Wood BMW in Romford.

Stock data from 19 October 2026.

How we estimate prices and check cars

Price history

First seen on 3 October 2026, 17 days ago. Advert duration calculated on 20 October 2026.

Recorded asking prices
Date observed	Asking price
3 October 2026	£66,970
19 October 2026	£66,970

Price and mileage comparison

Estimated market asking price: £60,832. The asking price is £6,138 above this estimate.

The estimate uses UK dealer asking prices, accounting for make, model, trim, version, age, mileage, fuel, gearbox, body type, driven wheels, engine size and power. It estimates an advertised price, not a confirmed sale price.

The pricing calculation includes 775 adverts of this make and model across different ages and specifications.

Advertised mileage is approximately 8,400 miles higher than typical for a 2023 BMW M3.

MOT

MOT no details held by dvla.

105 other cars with the same year, trim, gearbox and fuel are for sale from £49,995 to £77,995.

Other matching cars (up to five, cheapest first)
Asking price	Mileage
£49,995	37,000 miles
£50,495	44,843 miles
£54,995	54,000 miles
£54,995	36,430 miles
£54,995	47,461 miles

These cars have covered 4,742–54,000 miles, compared with 30,456 miles for this car.

Matching year, trim, gearbox and fuel does not mean matching mileage or every specification. Our estimate adjusts for these differences using the wider market data.

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

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Dealer

Sytner Harold Wood BMW, Romford. Across the dealer network: 140 branches, 10,310 cars for sale.

Dealer postcode: RM3 0GX.

Dealer opening hours

Monday: 08:30-18:00
Tuesday: 08:30-18:00
Wednesday: 08:30-18:00
Thursday: 08:30-18:00
Friday: 08:30-18:00
Saturday: 09:00-17:00
Sunday: 10:00-16:00