2021 BMW X3

3.0 M40i Auto 4WD Euro 6 5dr (354 bhp)

£35,995

Fair price: within 8% of the typical £35,586 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 Auto 4WD Euro 6 5dr (354 bhp)
Mileage
40,000 miles
Year
2021
Fuel type
Petrol
Body type
SUV
Engine
3.0 L
Gearbox
Automatic
Power
354 bhp
Seats
5
CO2
213 g/km
Colour
Grey
Doors
5
Driven wheels
Four Wheel Drive
Engine badge
M40i
Emissions standard
Euro 6

About this car

This 2021 BMW X3 is advertised with 40,000 miles, approximately 8,500 below the typical mileage for its age. Its asking price of £35,995 is £409 above our estimate of £35,586. Our estimate draws on 2,996 BMW X3 adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We first recorded this car for sale 3 days ago. MOT records show an expiry date of 31 August 2027, and the latest recorded mileage is consistent with the advert. It is for sale at High Spec Cars in Kings Langley.

Stock data from 20 October 2026.

How we estimate prices and check cars

Price history

First seen on 18 October 2026, 3 days ago. Advert duration calculated on 21 October 2026.

Recorded asking prices
Date observedAsking price
18 October 2026£35,995
20 October 2026£35,995

Price and mileage comparison

Estimated market asking price: £35,586. The asking price is £409 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 8,500 miles lower than typical for a 2021 BMW X3.

The advertised mileage is consistent with the last MOT reading.

MOT

MOT valid until 31 August 2027. 39,575 miles at the last test.

14 other cars with the same year, trim, gearbox and fuel are for sale from £28,946 to £39,104.

Other matching cars (up to five, cheapest first)
Asking priceMileage
£28,94671,000 miles
£29,65055,701 miles
£29,99977,000 miles
£30,48078,707 miles
£30,50049,250 miles

These cars have covered 24,019–78,707 miles, compared with 40,000 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 · 2021 BMW X3 price guide

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Dealer

High Spec Cars, Kings Langley. Across the dealer network: 30 cars for sale.

Dealer postcode: WD4 8JU.

Dealer opening hours

Monday
11:00-19:00
Tuesday
11:00-19:00
Wednesday
11:00-19:00
Thursday
11:00-19:00
Friday
11:00-19:00
Saturday
11:00-19:00
Sunday
Closed

Vehicle photos