2021 BMW X3

2.0 xDrive20i M Sport Auto 4WD Euro 6 5dr (181 bhp)

£21,450

Fair price: within 8% of the typical £21,313 for this model, age and mileage, drawing on 2,996 adverts of this make and model.

Overview

Make: BMW
Model: X3
Trim: M SPORT
Version: 2.0 xDrive20i M Sport Auto 4WD Euro 6 5dr (181 bhp)
Mileage: 77,430 miles
Year: 2021
Fuel type: Petrol
Body type: SUV
Engine: 2.0 L
Gearbox: Automatic
Power: 181 bhp
Seats: 5
CO2: 178 g/km
Colour: White
Doors: 5
Driven wheels: Four Wheel Drive
Engine badge: 20i
Emissions standard: Euro 6

About this car

This 2021 BMW X3 M Sport has covered 77,430 miles, around 28,900 more than typical for its age. Its asking price of £21,450 is £137 above our estimate of £21,313. The estimate uses 2,996 UK dealer adverts for the BMW X3, with adjustments for age, mileage, trim, engine and other specifications. We first saw this car advertised 39 days ago. Its asking price has since fallen by £545. MOT records show an expiry date of 26 January 2027, and the latest recorded mileage is consistent with the advert. The seller is Cotswold Bmw Cheltenham, based in Cheltenham.

Stock data from 20 October 2026.

How we estimate prices and check cars

Price history

First seen on 12 September 2026, 39 days ago. Advert duration calculated on 21 October 2026. Net asking-price reduction: £545 from the first recorded £21,995. 1 price reduction recorded, the latest observed on 17 October 2026.

Recorded asking prices
Date observed	Asking price
12 September 2026	£21,995
17 October 2026	£21,450
20 October 2026	£21,450

Price and mileage comparison

Estimated market asking price: £21,313. The asking price is £137 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 28,900 miles higher than typical for a 2021 BMW X3.

The advertised mileage is consistent with the last MOT reading.

MOT

MOT valid until 26 January 2027. 71,928 miles at the last test.

19 other cars with the same year, trim, gearbox and fuel are for sale from £17,995 to £31,990.

Other matching cars (up to five, cheapest first)
Asking price	Mileage
£17,995	105,470 miles
£21,599	69,500 miles
£21,950	76,553 miles
£22,995	64,000 miles
£23,995	73,500 miles

These cars have covered 17,120–105,470 miles, compared with 77,430 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

Cotswold Bmw Cheltenham, Cheltenham. Across the dealer network: 105 cars for sale.

Dealer postcode: GL51 6UP.