2021 BMW X3 3.0 M40i
Price: £29,950. Fair price: £1,824 (5%) under the AskCar estimate of £31,774, our expected asking price for this car from its model, age, mileage and specification, drawing on 3,099 priced BMW X3 adverts on AskCar as of 6 November 2026.
AskCar lists 3,164 used BMW X3 from 1,233 UK dealerships, as of 6 November 2026.
Overview
- Make: BMW
- Model: X3
- Version: 3.0 M40i Auto 4WD Euro 6 5dr (354 bhp)
- Year: 2021
- Mileage: 64,000 miles
- Fuel: Petrol
- Body: SUV, 5 doors, 5 seats
- Engine: 3.0 litres, 354 bhp
- Gearbox: Automatic
- Drive: Four-wheel drive
- Colour: Black
- CO2: 205 g/km
- Emissions standard: Euro 6, ULEZ compliant
About this car
With 64,000 miles on the clock, this 2021 BMW X3 has done roughly 16,200 more miles than a typical 2021 BMW X3. Its asking price of £29,950 is £1,824 below the AskCar estimate of £31,774. To work out the AskCar estimate, we analyse UK dealer adverts for 3,099 BMW X3 cars across different ages and specifications. It first appeared in our advert records 8 days ago. Its advertised mileage matches the government's MOT record. It is advertised by Westleigh Prestige in Basildon. How to contact the dealer and its opening hours are on this AskCar page.
Stock data as of 6 November 2026.
Price
Fair price: £1,824 (5%) under the AskCar estimate of £31,774.
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 3,099 priced BMW X3 adverts across different ages and specifications, as of 6 November 2026.
A 2021 BMW X3 with the 3.0 petrol engine is typically advertised at £32,000: the median of the 42 for sale on AskCar, as of 6 November 2026.
Time on sale
This 2021 BMW X3 has been on sale for at least 8 days.
Price history
AskCar first saw this advert on 29 October 2026 at £29,950. 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 6 November 2026: valid until 23 March 2027.
It has had 3 MOTs. The latest, on 18 March 2026, passed.
There were no advisories at the latest test.
Mileage at that test: 58,744 miles, which matches the advertised 64,000 miles.
Advertised mileage is about 16,200 miles higher than the median mileage of a 2021 BMW X3 on AskCar.
Browse all BMW X3 cars for sale · 2021 BMW X3 price guide
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Photos
27 photos of this car are on its AskCar page.
As of 6 November 2026, AskCar lists 598,752 cars and vans from 12,905 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.