2021 BMW X3 M

3.0 i Competition Auto 4WD Euro 6 (s/s) 5dr (503 bhp)

£45,995

Good value: £4,856 under the typical £50,851 for this model, age and mileage, drawing on 132 adverts of this make and model.

Overview

Make
BMW
Model
X3 M
Trim
COMPETITION
Version
3.0 i Competition Auto 4WD Euro 6 (s/s) 5dr (503 bhp)
Mileage
23,000 miles
Year
2021
Fuel type
Petrol
Body type
SUV
Engine
3.0 L
Gearbox
Automatic
Power
503 bhp
Seats
5
CO2
262 g/km
Colour
Grey
Doors
5
Driven wheels
Four Wheel Drive
Engine badge
Competition
Emissions standard
Euro 6

About this car

This 2021 BMW X3 M Competition is advertised with 23,000 miles, approximately 15,200 below the typical mileage for its age. Our estimated market asking price is £50,851. This car is advertised at £45,995, which is £4,856 below that figure. To estimate its market asking price, we analyse UK dealer adverts for 132 BMW X3 M cars across different ages and specifications. We first recorded this advert 148 days ago, and its asking price has since fallen by £2,893. The time on sale and price change could be useful context when negotiating. Its MOT is recorded as valid until 15 April 2027. The advertised mileage is consistent with the latest MOT reading. You can find this car at Caledonia Vehicle Solutions in AYR.

Stock data from 21 October 2026.

How we estimate prices and check cars

Price history

First seen on 28 May 2026, 148 days ago. Advert duration calculated on 23 October 2026. Net asking-price reduction: £2,893 from the first recorded £48,888. 3 price reductions recorded, the latest observed on 4 October 2026.

Recorded asking prices
Date observedAsking price
29 May 2026£48,888
7 July 2026£48,888
23 August 2026£47,888
10 September 2026£46,995
4 October 2026£45,995
21 October 2026£45,995

Price and mileage comparison

Estimated market asking price: £50,851. The asking price is £4,856 below 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 132 adverts of this make and model across different ages and specifications.

Advertised mileage is approximately 15,200 miles lower than typical for a 2021 BMW X3 M.

The advertised mileage is consistent with the last MOT reading.

MOT

MOT valid until 15 April 2027. 22,881 miles at the last test.

25 other cars with the same year, trim, gearbox and fuel are for sale from £36,000 to £57,995.

Other matching cars (up to five, cheapest first)
Asking priceMileage
£36,00085,546 miles
£39,99560,994 miles
£39,99562,137 miles
£40,99547,300 miles
£41,99557,000 miles

These cars have covered 21,328–85,546 miles, compared with 23,000 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 M cars for sale · 2021 BMW X3 M price guide

How to contact the dealer, its opening hours and the cheaper cars like this one are on this AskCar page.

Vehicle photos