2020 BMW X3 M

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

£37,995

Above the going rate: £4,330 over the typical £33,665 for this model, age and mileage, drawing on 130 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: 83,230 miles
Year: 2020
Fuel type: Petrol
Body type: SUV
Engine: 3.0 L
Gearbox: Automatic
Power: 503 bhp
Seats: 5
CO2: 239 g/km
Colour: Black
Doors: 5
Driven wheels: Four Wheel Drive
Engine badge: Competition
Emissions standard: Euro 6

About this car

With 83,230 miles on the clock, this 2020 BMW X3 M Competition has done roughly 35,200 more miles than a typical 2020 BMW X3 M. Its asking price of £37,995 is £4,330 above our estimate of £33,665. We use UK dealer asking prices, including 130 BMW X3 M listings, and account for the car’s age, mileage and specification. This car was first seen in our listings data 32 days ago. MOT records show an expiry date of 20 January 2027, and the latest recorded mileage is consistent with the advert. It is advertised by Macphersons & Sons in Buckinghamshire.

Stock data from 20 October 2026.

How we estimate prices and check cars

Price history

First seen on 19 September 2026, 32 days ago. Advert duration calculated on 21 October 2026.

Recorded asking prices
Date observed	Asking price
19 September 2026	£37,995
20 October 2026	£37,995

Price and mileage comparison

Estimated market asking price: £33,665. The asking price is £4,330 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 130 adverts of this make and model across different ages and specifications.

Advertised mileage is approximately 35,200 miles higher than typical for a 2020 BMW X3 M.

The advertised mileage is consistent with the last MOT reading.

MOT

MOT valid until 20 January 2027. 79,613 miles at the last test.

17 other cars with the same year, trim, gearbox and fuel are for sale from £32,995 to £47,581.

Other matching cars (up to five, cheapest first)
Asking price	Mileage
£32,995	86,000 miles
£34,999	79,000 miles
£36,990	67,900 miles
£36,995	61,200 miles
£37,995	63,000 miles

These cars have covered 21,618–86,000 miles, compared with 83,230 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 · 2020 BMW X3 M price guide

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Dealer

Macphersons & Sons, Buckinghamshire. Across the dealer network: 20 cars for sale.

Dealer postcode: SL3 6HD.