2021 BMW X4 M

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

£40,990

Fair price: within 8% of the typical £40,699 for this model, age and mileage, drawing on 83 adverts of this make and model.

Overview

Make: BMW
Model: X4 M
Trim: COMPETITION
Version: 3.0 i Competition Auto 4WD Euro 6 (s/s) 5dr (503 bhp)
Mileage: 47,999 miles
Year: 2021
Fuel type: Petrol
Body type: SUV
Engine: 3.0 L
Gearbox: Automatic
Power: 503 bhp
Seats: 5
CO2: 259 g/km
Colour: Grey
Doors: 5
Driven wheels: Four Wheel Drive
Engine badge: Competition
Emissions standard: Euro 6

About this car

This 2021 BMW X4 M Competition has covered 47,999 miles. Its asking price of £40,990 is £291 above our estimate of £40,699. To estimate its market asking price, we analyse UK dealer adverts for 83 BMW X4 M cars across different ages and specifications. This car was first seen in our listings data 68 days ago. Ask the dealer why the advert shows fewer miles than the 52,417 recorded at the latest MOT. MOT records show an expiry date of 1 September 2027. It is for sale at Best4U Motors in Brentwood.

Stock data from 20 October 2026.

How we estimate prices and check cars

Price history

First seen on 14 August 2026, 68 days ago. Advert duration calculated on 21 October 2026.

Recorded asking prices
Date observed	Asking price
9 October 2026	£40,990
20 October 2026	£40,990

Price and mileage comparison

Estimated market asking price: £40,699. The asking price is £291 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 83 adverts of this make and model across different ages and specifications.

Advertised mileage is approximately 2,000 miles lower than typical for a 2021 BMW X4 M.

Mileage concern: the advertised mileage is below the last MOT reading; ask the dealer to explain.

MOT

MOT valid until 1 September 2027. 52,417 miles at the last test.

12 other cars with the same year, trim, gearbox and fuel are for sale from £32,890 to £44,995.

Other matching cars (up to five, cheapest first)
Asking price	Mileage
£32,890	61,000 miles
£34,995	60,000 miles
£36,498	70,992 miles
£36,795	53,790 miles
£37,700	47,380 miles

These cars have covered 33,449–70,992 miles, compared with 47,999 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 X4 M cars for sale · 2021 BMW X4 M price guide

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Dealer

Best4U Motors, Brentwood. Across the dealer network: 44 cars for sale.

Dealer postcode: CM13 3HD.