2023 BMW 3 Series 3.0 M340i MHT
Price: £39,750. Fair price: £1,113 (2%) under the AskCar estimate of £40,863, our expected asking price for this car from its model, age, mileage and specification, drawing on 6,902 priced BMW 3 Series adverts on AskCar as of 6 November 2026.
AskCar lists 7,204 used BMW 3 Series from 2,726 UK dealerships, as of 6 November 2026.
Overview
- Make: BMW
- Model: 3 Series
- Version: 3.0 M340i MHT Auto 4WD Euro 6 (s/s) 4dr (369 bhp)
- Year: 2023
- Mileage: 25,769 miles
- Fuel: Petrol, mild hybrid
- Body: Saloon, 4 doors, 5 seats
- Engine: 3.0 litres, 369 bhp
- Gearbox: Automatic
- Drive: Four-wheel drive
- Colour: Black
- CO2: 182 g/km
- Emissions standard: Euro 6, ULEZ compliant
About this car
At 25,769 miles, this 2023 BMW 3 Series has covered about 8,900 fewer miles than other 2023 BMW 3 Series cars. The AskCar estimate for this car is £40,863. It is priced at £39,750, which is £1,113 below that estimate. The AskCar estimate draws on 6,902 BMW 3 Series adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. Since we first spotted the advert 68 days ago, the asking price has dropped by £1,250. The seller is Sytner Swansea MINI, based in Swansea. How to contact the dealer and its opening hours are on this AskCar page.
Stock data as of 6 November 2026.
Price
Fair price: £1,113 (2%) under the AskCar estimate of £40,863.
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 6,902 priced BMW 3 Series adverts across different ages and specifications, as of 6 November 2026.
A 2023 BMW 3 Series with the 3.0 petrol engine is typically advertised at £39,300: the median of the 70 for sale on AskCar, as of 6 November 2026.
Time on sale
This 2023 BMW 3 Series has been on sale for at least 68 days.
Price history
AskCar first saw this advert on 30 August 2026 at £41,000. Its asking price is now £39,750, £1,250 less. The latest price cut was seen on 5 November 2026.
Price changes recorded:
- 30 August 2026: £41,000
- 9 October 2026: £40,750
- 29 October 2026: £40,000
- 5 November 2026: £39,750
Mileage and MOT
Advertised mileage is about 8,900 miles lower than the median mileage of a 2023 BMW 3 Series on AskCar.
Browse all BMW 3 Series cars for sale · 2023 BMW 3 Series price guide
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Photos
25 photos of this car are on its AskCar page.
As of 6 November 2026, AskCar lists 598,752 cars and vans from 12,905 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.