2020 BMW X3 M 3.0 Competition

Overview

• Make: BMW
• Model: X3 M
• Trim: Competition
• Version: 3.0 M Competition Steptronic 4WD Euro 6 5dr (502 bhp)
• Year: 2020
• Mileage: 31,111 miles
• Fuel: Petrol
• Body: 5 doors, 5 seats
• Engine: 3.0 litres, 502 bhp
• Gearbox: Automatic (Steptronic)
• Drive: Four-wheel drive
• Colour: Black
• CO2: 261 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2020 BMW X3 M Competition has covered 31,111 miles, around 20,000 fewer miles than is typical for its age. The AskCar estimate for this car is £45,220. It is priced at £44,790, which is £430 below that estimate. The AskCar estimate uses 128 UK dealer adverts for the BMW X3 M, with adjustments for age, mileage, trim, engine and other specifications. We first saw this car advertised 15 days ago. Its asking price has since fallen by £200. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is MINI UK at Stratstone Chesterfield, based in Chesterfield. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 6 November 2026.

How we estimate prices and check cars

Price

Fair price: £430 (under 1%) under the AskCar estimate of £45,220.

The AskCar estimate is our expected asking price for this car. It uses UK dealer asking prices, accounting for make, model, trim, version, age, mileage, fuel, gearbox, body type, driven wheels, engine size and power. It is an advertised price, not a confirmed sale price.

It draws on 128 priced BMW X3 M adverts across different ages and specifications, as of 6 November 2026.

A 2020 BMW X3 M with the 3.0 petrol engine is typically advertised at £39,500: the median of the 16 for sale on AskCar, as of 6 November 2026.

Time on sale

This 2020 BMW X3 M has been on sale for at least 15 days.

Price history

AskCar first saw this advert on 22 October 2026 at £44,990. Its asking price is now £44,790, £200 less. The latest price cut was seen on 27 October 2026.

Price changes recorded:

• 22 October 2026: £44,990
• 27 October 2026: £44,790

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 6 November 2026: valid until 25 March 2027.

It failed its MOT on 27 February 2026 (engine MIL inoperative or indicates a malfunction on dash; exhaust carbon monoxide content at idle exceeds default limits; exhaust lambda reading after 2nd fast idle outside specified limits; and 1 more) and passed 27 days later, on 26 March 2026.

There were no advisories at the latest test.

Mileage at that test: 29,170 miles, which matches the advertised 31,111 miles.

Advertised mileage is about 20,000 miles lower than the median mileage of a 2020 BMW X3 M on AskCar.