2023 BMW 3 Series 3.0 M340d MHT
Price: £38,000. Fair price: £203 (under 1%) under the AskCar estimate of £38,203, our expected asking price for this car from its model, age, mileage and specification, drawing on 6,822 priced BMW 3 Series adverts on AskCar as of 8 November 2026.
AskCar lists 7,130 used BMW 3 Series from 2,708 UK dealerships, as of 8 November 2026.
Overview
- Make: BMW
- Model: 3 Series
- Version: 3.0 M340d MHT Touring Auto 4WD Euro 6 (s/s) 5dr (335 bhp)
- Year: 2023
- Mileage: 51,984 miles
- Fuel: Diesel, mild hybrid
- Body: Estate, 5 doors, 5 seats
- Engine: 3.0 litres, 335 bhp
- Gearbox: Automatic
- Drive: Four-wheel drive
- Colour: Grey
- CO2: 164 g/km
- Emissions standard: Euro 6, ULEZ compliant
About this car
At 51,984 miles, this 2023 BMW 3 Series has covered about 18,100 more miles than other 2023 BMW 3 Series cars. The dealer is asking £38,000, which is £203 below the AskCar estimate of £38,203. To work out the AskCar estimate, we analyse UK dealer adverts for 6,822 BMW 3 Series cars across different ages and specifications. We first saw this car advertised 25 days ago. Its asking price has since fallen by £2,000. 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 8 November 2026.
Price
Fair price: £203 (under 1%) under the AskCar estimate of £38,203.
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 6,822 priced BMW 3 Series adverts across different ages and specifications, as of 8 November 2026.
A 2023 BMW 3 Series with the 3.0 diesel engine is typically advertised at £39,500: the median of the 69 for sale on AskCar, as of 8 November 2026.
Time on sale
This 2023 BMW 3 Series has been on sale for at least 25 days.
Price history
AskCar first saw this advert on 14 October 2026 at £40,000. Its asking price is now £38,000, £2,000 less. The latest price cut was seen on 5 November 2026.
Price changes recorded:
- 14 October 2026: £40,000
- 5 November 2026: £38,000
Mileage and MOT
Advertised mileage is about 18,100 miles higher 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
More like this
- Used automatic BMW 3 Series for sale
- Used diesel BMW 3 Series for sale
- Used BMW 3 Series for sale near Swansea
Photos
34 photos of this car are on its AskCar page.
As of 8 November 2026, AskCar lists 595,629 cars and vans from 12,891 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.