2021 BMW X3 2.0 20d MHT Xline
Price: £23,999. Fair price: £103 (under 1%) under the AskCar estimate of £24,102, our expected asking price for this car from its model, age, mileage and specification, drawing on 3,058 priced BMW X3 adverts on AskCar as of 14 November 2026.
AskCar lists 3,112 used BMW X3 from 1,223 UK dealerships, as of 14 November 2026.
Overview
- Make: BMW
- Model: X3
- Trim: Xline
- Version: 2.0 20d MHT Xline Auto 4WD Euro 6 (s/s) 5dr (187 bhp)
- Year: 2021
- Mileage: 36,416 miles
- Fuel: Diesel, mild hybrid
- Body: SUV, 5 doors, 5 seats
- Engine: 2.0 litres, 187 bhp
- Gearbox: Automatic
- Drive: Four-wheel drive
- Colour: White
- CO2: 158 g/km
- Emissions standard: Euro 6, ULEZ compliant
About this car
This 2021 BMW X3 Xline has covered 36,416 miles, around 12,700 fewer miles than is typical for its age. Priced at £23,999, it is advertised £103 below the AskCar estimate of £24,102. To work out the AskCar estimate, we analyse UK dealer adverts for 3,058 BMW X3 cars across different ages and specifications. This car was first seen in our listings data 2 days ago. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Halliwell Jones Wilmslow BMW, based in Wilmslow. How to contact the dealer and its opening hours are on this AskCar page.
Stock data as of 14 November 2026.
Halliwell Jones Wilmslow BMW is rated 3.9 out of 5 on Google.
Price
Fair price: £103 (under 1%) under the AskCar estimate of £24,102.
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 3,058 priced BMW X3 adverts across different ages and specifications, as of 14 November 2026.
A 2021 BMW X3 with the 2.0 diesel engine is typically advertised at £24,200: the median of the 175 for sale on AskCar, as of 14 November 2026.
Time on sale
AskCar first saw this 2021 BMW X3 advertised 2 days ago. About half of 2021 BMW X3 cars are gone from sale within a month of being advertised: 156 of the 337 first advertised between 14 July 2026 and 11 October 2026.
Price history
AskCar first saw this advert on 12 November 2026 at £23,999. Its asking price has not changed.
Mileage and MOT
MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 14 November 2026: valid until 25 May 2027.
It has had 3 MOTs. The latest, on 14 May 2026, passed.
There were no advisories at the latest test.
Mileage at that test: 32,872 miles, which matches the advertised 36,416 miles.
Advertised mileage is about 12,700 miles lower than the median mileage of a 2021 BMW X3 on AskCar.
Similar cars
4 other 2021 BMW X3 Xline 2.0 diesel automatic SUVs are for sale at UK dealers, from £20,380 to £23,500, as of 14 November 2026.
The 3 closest to this car in mileage:
- 2021 BMW X3 Xline, 2.0 diesel SUV, grey. Mileage: 35,000 miles. Price: £21,999, £2,000 less than this car. Dealer: Anycolourcar.com in Barnsley. AskCar page: https://askcar.co.uk/car/bmw-x3-2021-0e527b29dea3
- 2021 BMW X3 Xline, 2.0 diesel SUV, grey. Mileage: 41,007 miles. Price: £23,495, £504 less than this car. Dealer: Central Garage in Galashiels. AskCar page: https://askcar.co.uk/car/bmw-x3-2021-fcc42d558090
- 2021 BMW X3 Xline, 2.0 diesel SUV, blue. Mileage: 58,057 miles. Price: £20,380, £3,619 less than this car. Dealer: Cars2 Omoda Jaecoo Chery Bradford in Bradford. AskCar page: https://askcar.co.uk/car/bmw-x3-2021-0de2ee9b207f
Browse all BMW X3 cars for sale · 2021 BMW X3 price guide
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Photos
45 photos of this car are on its AskCar page.
As of 14 November 2026, AskCar lists 600,711 cars and vans from 12,770 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.