2023 BMW X3 3.0 M40i MHT
Price: £42,799. Fair price: £1,091 (2%) under the AskCar estimate of £43,890, our expected asking price for this car from its model, age, mileage and specification, drawing on 3,052 priced BMW X3 adverts on AskCar as of 7 November 2026.
AskCar lists 3,156 used BMW X3 from 1,227 UK dealerships, as of 7 November 2026.
Overview
- Make: BMW
- Model: X3
- Version: 3.0 M40i MHT Auto 4WD Euro 6 (s/s) 5dr (355 bhp)
- Year: 2023
- Mileage: 31,924 miles
- Fuel: Petrol, mild hybrid
- Body: SUV, 5 doors, 5 seats
- Engine: 3.0 litres, 355 bhp
- Gearbox: Automatic
- Drive: Four-wheel drive
- Colour: Black
- CO2: 207 g/km
- Emissions standard: Euro 6, ULEZ compliant
About this car
This 2023 BMW X3 is advertised with 31,924 miles, approximately 2,100 above the typical mileage for its age. The dealer is asking £42,799, which is £1,091 below the AskCar estimate of £43,890. To work out the AskCar estimate, we analyse UK dealer adverts for 3,052 BMW X3 cars across different ages and specifications. We first saw this car advertised 36 days ago. Its asking price has since fallen by £1,200. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Halliwell Jones Wilmslow BMW, based in Wilmslow. How to contact the dealer and its opening hours are on this AskCar page.
Stock data as of 7 November 2026.
Price
Fair price: £1,091 (2%) under the AskCar estimate of £43,890.
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 3,052 priced BMW X3 adverts across different ages and specifications, as of 7 November 2026.
A 2023 BMW X3 with the 3.0 petrol engine is typically advertised at £40,700: the median of the 76 for sale on AskCar, as of 7 November 2026.
Time on sale
This 2023 BMW X3 has been on sale for at least 36 days.
Price history
AskCar first saw this advert on 2 October 2026 at £43,999. Its asking price is now £42,799, £1,200 less. The latest price cut was seen on 7 November 2026.
Price changes recorded:
- 2 October 2026: £43,999
- 16 October 2026: £43,699
- 27 October 2026: £42,999
- 7 November 2026: £42,799
Mileage and MOT
MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 7 November 2026: valid until 8 January 2027.
It has had one MOT, on 5 January 2026, and passed.
There were no advisories at the latest test.
Mileage at that test: 24,826 miles, which matches the advertised 31,924 miles.
Advertised mileage is about 2,100 miles higher than the median mileage of a 2023 BMW X3 on AskCar.
Browse all BMW X3 cars for sale · 2023 BMW X3 price guide
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Photos
45 photos of this car are on its AskCar page.
As of 7 November 2026, AskCar lists 601,018 cars and vans from 12,892 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.