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: 34,200 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

At 34,200 miles, this 2023 BMW X3 has covered about 4,300 more miles than other 2023 BMW X3 cars. Its asking price of £41,790 is £1,568 below the AskCar estimate of £43,358. To work out the AskCar estimate, we analyse UK dealer adverts for 3,052 BMW X3 cars across different ages and specifications. The asking price is now £1,700 lower than when we first recorded the advert 56 days ago. We checked its advertised mileage against the government's MOT record, and they match. The seller is Stratstone BMW Milton Keynes, based in Milton Keynes. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 7 November 2026.

How we estimate prices and check cars

Price

Fair price: £1,568 (3%) under the AskCar estimate of £43,358.

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 56 days.

Price history

AskCar first saw this advert on 12 September 2026 at £43,490. Its asking price is now £41,790, £1,700 less. The latest price cut was seen on 30 October 2026.

Price changes recorded:

• 12 September 2026: £43,490
• 22 September 2026: £43,390
• 13 October 2026: £43,290
• 24 October 2026: £42,990
• 30 October 2026: £41,790

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 7 November 2026: valid until 18 June 2027.

It has had one MOT, on 4 June 2026, and passed.

There were no advisories at the latest test.

Mileage at that test: 32,351 miles, which matches the advertised 34,200 miles.

Advertised mileage is about 4,300 miles higher than the median mileage of a 2023 BMW X3 on AskCar.