2020 BMW X3 M 3.0 Competition

Overview

• Make: BMW
• Model: X3 M
• Trim: Competition
• Version: 3.0 i Competition Auto 4WD Euro 6 (s/s) 5dr (503 bhp)
• Year: 2020
• Mileage: 31,112 miles
• Fuel: Petrol
• Body: SUV, 5 doors, 5 seats
• Engine: 3.0 litres, 503 bhp
• Gearbox: Automatic
• Drive: Four-wheel drive
• Colour: Black
• CO2: 239 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 31,112 miles, this 2020 BMW X3 M Competition has covered about 14,000 fewer miles than other 2020 BMW X3 M cars. Priced at £43,990, it is advertised £1,339 below the AskCar estimate of £45,329. The AskCar estimate uses 125 UK dealer adverts for the BMW X3 M, with adjustments for age, mileage, trim, engine and other specifications. We first recorded this advert 1 day ago, and its asking price has since fallen by £500. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Stratstone Bmw Chesterfield, based in Chesterfield. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 12 November 2026.

How we estimate prices and check cars

Price

Fair price: £1,339 (2%) under the AskCar estimate of £45,329.

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 125 priced BMW X3 M adverts across different ages and specifications, as of 12 November 2026.

A 2020 BMW X3 M with the 3.0 petrol engine is typically advertised at £40,000: the median of the 17 for sale on AskCar, as of 12 November 2026.

Time on sale

AskCar first saw this 2020 BMW X3 M advertised 1 day ago.

Price history

AskCar first saw this advert on 11 November 2026 at £44,490. Its asking price is now £43,990, £500 less. The latest price cut was seen on 12 November 2026.

Price changes recorded:

• 11 November 2026: £44,490
• 12 November 2026: £43,990

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 12 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 31,112 miles.

Advertised mileage is about 14,000 miles lower than the median mileage of a 2020 BMW X3 M on AskCar.

Similar cars

15 other 2020 BMW X3 M Competition 3.0 petrol automatic SUVs are for sale at UK dealers, from £34,999 to £44,990, as of 12 November 2026.

The 3 closest to this car in mileage:

• 2020 BMW X3 M Competition, 3.0 petrol SUV, grey. Mileage: 31,024 miles. Price: £41,500, £2,490 less than this car. Dealer: Cotswold Group Select in Tewkesbury. AskCar page: https://askcar.co.uk/car/bmw-x3-m-2020-d9f1f69b5442
• 2020 BMW X3 M Competition, 3.0 petrol SUV, black. Mileage: 33,717 miles. Price: £42,999, £991 less than this car. Dealer: Sandles Cars in King's Lynn. AskCar page: https://askcar.co.uk/car/bmw-x3-m-2020-4e4ea5f14505
• 2020 BMW X3 M Competition, 3.0 petrol SUV, grey. Mileage: 33,755 miles. Price: £44,990, £1,000 more than this car. Dealer: Saltmarine Cars in Dungannon. AskCar page: https://askcar.co.uk/car/bmw-x3-m-2020-e759a98cab26

• The nearest: 2020 BMW X3 M Competition, 3.0 petrol SUV, white, 22 miles from this car. Mileage: 63,000 miles. Price: £39,995, £3,995 less than this car. Dealer: Empire Autos in Nottingham. AskCar page: https://askcar.co.uk/car/bmw-x3-m-2020-612656bebaf8