2023 BMW X3

3.0 M40i MHT Auto 4WD Euro 6 (s/s) 5dr (355 bhp)

£45,970

Fair price: within 8% of the typical £45,805 for this model, age and mileage, drawing on 2,996 adverts of this make and model.

Overview

Make: BMW
Model: X3
Version: 3.0 M40i MHT Auto 4WD Euro 6 (s/s) 5dr (355 bhp)
Mileage: 23,123 miles
Year: 2023
Fuel type: Petrol Hybrid
Body type: SUV
Engine: 3.0 L
Gearbox: Automatic
Power: 355 bhp
Seats: 5
CO2: 207 g/km
Colour: Grey
Doors: 5
Driven wheels: Four Wheel Drive
Engine badge: M40i; MHT
Hybrid type: Mild hybrid
Emissions standard: Euro 6

About this car

This 2023 BMW X3 has covered 23,123 miles, around 5,400 fewer than typical for its age. Its asking price of £45,970 is £165 above our estimate of £45,805. To estimate its market asking price, we analyse UK dealer adverts for 2,996 BMW X3 cars across different ages and specifications. Since we first spotted the advert 21 days ago, the asking price has dropped by £1,000. It is for sale at Sytner Harold Wood BMW in Romford.

Stock data from 20 October 2026.

How we estimate prices and check cars

Price history

First seen on 30 September 2026, 21 days ago. Advert duration calculated on 21 October 2026. Net asking-price reduction: £1,000 from the first recorded £46,970. 1 price reduction recorded, the latest observed on 20 October 2026.

Recorded asking prices
Date observed	Asking price
30 September 2026	£46,970
20 October 2026	£45,970

Price and mileage comparison

Estimated market asking price: £45,805. The asking price is £165 above this estimate.

The estimate uses UK dealer asking prices, accounting for make, model, trim, version, age, mileage, fuel, gearbox, body type, driven wheels, engine size and power. It estimates an advertised price, not a confirmed sale price.

The pricing calculation includes 2,996 adverts of this make and model across different ages and specifications.

Advertised mileage is approximately 5,400 miles lower than typical for a 2023 BMW X3.

MOT

MOT no details held by dvla.

18 other cars with the same year, trim, gearbox and fuel are for sale from £39,495 to £51,250.

Other matching cars (up to five, cheapest first)
Asking price	Mileage
£39,495	41,420 miles
£39,995	29,000 miles
£42,495	32,999 miles
£42,890	38,472 miles
£42,980	42,213 miles

These cars have covered 6,963–42,213 miles, compared with 23,123 miles for this car.

Matching year, trim, gearbox and fuel does not mean matching mileage or every specification. Our estimate adjusts for these differences using the wider market data.

Browse all BMW X3 cars for sale · 2023 BMW X3 price guide

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Dealer

Sytner Harold Wood BMW, Romford. Across the dealer network: 140 branches, 10,337 cars for sale.

Dealer postcode: RM3 0GX.

Dealer opening hours

Monday: 08:30-18:00
Tuesday: 08:30-18:00
Wednesday: 08:30-18:00
Thursday: 08:30-18:00
Friday: 08:30-18:00
Saturday: 09:00-17:00
Sunday: 10:00-16:00