2020 BMW X3 M

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

£43,499

Fair price: within 8% of the typical £45,690 for this model, age and mileage, drawing on 131 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
33,717 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

This 2020 BMW X3 M Competition has covered 33,717 miles, around 14,300 fewer than typical for its age. Its asking price of £43,499 is £2,191 below our estimate of £45,690. To estimate its market asking price, we analyse UK dealer adverts for 131 BMW X3 M cars across different ages and specifications. We first recorded this advert 76 days ago, and its asking price has since fallen by £1,300. The recorded MOT expired on 4 September 2026, so ask the dealer whether it has been renewed. Our comparison with the latest MOT reading has not flagged a mileage discrepancy. It is advertised by Sandles Cars in Kings Lynn.

Stock data from 18 October 2026.

How we estimate prices and check cars

Price history

First seen on 5 August 2026, 76 days ago. Advert duration calculated on 20 October 2026. Net asking-price reduction: £1,300 from the first recorded £44,799. 3 price reductions recorded, the latest observed on 14 October 2026.

Recorded asking prices
Date observedAsking price
6 August 2026£44,799
9 September 2026£44,499
23 September 2026£43,999
14 October 2026£43,499
18 October 2026£43,499

Price and mileage comparison

Estimated market asking price: £45,690. The asking price is £2,191 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 131 adverts of this make and model across different ages and specifications.

Advertised mileage is approximately 14,300 miles lower than typical for a 2020 BMW X3 M.

The advertised mileage is consistent with the last MOT reading.

The recorded MOT has expired; ask the dealer for an up-to-date MOT.

MOT

MOT valid until 4 September 2026. 28,804 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 priceMileage
£32,99586,000 miles
£34,99979,000 miles
£36,99067,900 miles
£36,99561,200 miles
£37,99563,000 miles

These cars have covered 21,618–86,000 miles, compared with 33,717 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

Sandles Cars, Kings Lynn. Across the dealer network: 213 cars for sale.

Dealer postcode: PE32 1DD.

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
10:00-17:00

Vehicle photos