2023 BMW X3 3.0 M40i MHT

Overview

• Make: BMW
• Model: X3
• Version: 3.0 M40i MHT Auto 4WD Euro 6 (s/s) 5dr (355 bhp)
• Year: 2023
• Mileage: 23,123 miles
• Fuel: Petrol, mild hybrid
• Body: SUV, 5 doors, 5 seats
• Engine: 3.0 litres, 355 bhp
• Gearbox: Automatic
• Drive: Four-wheel drive
• Colour: Grey
• CO2: 207 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2023 BMW X3 has covered 23,123 miles, around 6,300 fewer miles than is typical for its age. Its asking price of £45,470 is £232 below the AskCar estimate of £45,702. To work out the AskCar estimate, we analyse UK dealer adverts for 3,099 BMW X3 cars across different ages and specifications. Since we first spotted the advert 37 days ago, the asking price has dropped by £1,500. It is for sale at Sytner Harold Wood BMW in Romford. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 6 November 2026.

How we estimate prices and check cars

Price

Fair price: £232 (under 1%) under the AskCar estimate of £45,702.

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 3,099 priced BMW X3 adverts across different ages and specifications, as of 6 November 2026.

A 2023 BMW X3 with the 3.0 petrol engine is typically advertised at £41,000: the median of the 76 for sale on AskCar, as of 6 November 2026.

Time on sale

This 2023 BMW X3 has been on sale for at least 37 days.

Price history

AskCar first saw this advert on 30 September 2026 at £46,970. Its asking price is now £45,470, £1,500 less. The latest price cut was seen on 1 November 2026.

Price changes recorded:

• 30 September 2026: £46,970
• 20 October 2026: £45,970
• 1 November 2026: £45,470

Mileage and MOT

Advertised mileage is about 6,300 miles lower than the median mileage of a 2023 BMW X3 on AskCar.