2021 BMW X3 3.0 M40i
Version: 3.0 M40i Auto 4WD Euro 6 5dr (354 bhp)
Price: £35,500. Fair price: £726 (2%) over the AskCar estimate of £34,774, our expected asking price for this car from its model, age, mileage and specification, drawing on 2,993 priced BMW X3 adverts on AskCar as of 30 October 2026.
AskCar lists 3,047 used BMW X3 from 1,191 UK dealerships, as of 30 October 2026.
Overview
- Make
- BMW
- Model
- X3
- Version
- 3.0 M40i Auto 4WD Euro 6 5dr (354 bhp)
- Mileage
- 46,471 miles
- Year
- 2021
- Fuel type
- Petrol
- Body type
- SUV
- Engine
- 3.0 L
- Gearbox
- Automatic
- Power
- 354 bhp
- Seats
- 5
- CO2
- 212 g/km
- Colour
- Black
- Doors
- 5
- Driven wheels
- Four Wheel Drive
- Engine badge
- M40i
- Emissions standard
- Euro 6
About this car
This 2021 BMW X3 has covered 46,471 miles, around 2,400 fewer miles than is typical for its age. Its asking price of £35,500 is £726 above the AskCar estimate of £34,774. To work out the AskCar estimate, we analyse UK dealer adverts for 2,993 BMW X3 cars across different ages and specifications. Since we first spotted the advert 85 days ago, the asking price has dropped by £1,500. Our latest MOT record expired on 18 October 2026. Check the current position with the dealer. Our comparison with the latest MOT reading has not flagged a mileage discrepancy. The seller is Sytner Warwick BMW, based in Warwick.
Stock data as of 30 October 2026.
Price history
AskCar first saw this advert on 6 August 2026, 85 days ago. Price reduced by £1,500 from £37,000 since AskCar first saw it. 3 price reductions recorded, the latest seen on 30 October 2026.
| Date observed | Asking price |
|---|---|
| 7 August 2026 | £37,000 |
| 8 August 2026 | £37,000 |
| 4 September 2026 | £36,500 |
| 21 September 2026 | £35,750 |
| 30 October 2026 | £35,500 |
Price and mileage comparison
Fair price: £726 (2%) over the AskCar estimate of £34,774.
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 2,993 priced BMW X3 adverts across different ages and specifications, as of 30 October 2026.
Advertised mileage is about 2,400 miles lower than the median mileage of a 2021 BMW X3 on AskCar.
The advertised mileage is consistent with the last MOT reading.
MOT
MOT: the latest record we hold ran out on 18 October 2026; ask the dealer for the current MOT. 40,030 miles at the last test.
Other matching cars
14 other 2021 BMW X3 automatic petrol cars are for sale at UK dealers from £28,946 to £42,980, as of 30 October 2026.
The 5 cheapest:
- 2021 BMW X3. Price: £28,946. Mileage: 71,000 miles. Dealer: Oakwood Motor Company in Bury. AskCar page: https://askcar.co.uk/car/bmw-x3-2021-4186fffb9ab1
- 2021 BMW X3. Price: £29,950. Mileage: 64,000 miles. Dealer: Westleigh Prestige in Wickford. AskCar page: https://askcar.co.uk/car/bmw-x3-2021-9a5cde4db9a9
- 2021 BMW X3. Price: £29,980. Mileage: 78,707 miles. Dealer: Oakdene Collection in Alfreton. AskCar page: https://askcar.co.uk/car/bmw-x3-2021-17c2dfa055c9
- 2021 BMW X3. Price: £29,999. Mileage: 77,000 miles. Dealer: Prestige Motoring Group in Tipton. AskCar page: https://askcar.co.uk/car/bmw-x3-2021-c82267d6636d
- 2021 BMW X3. Price: £30,970. Mileage: 65,000 miles. Dealer: Performance Paddock in Rochester. AskCar page: https://askcar.co.uk/car/bmw-x3-2021-5683efcf5d58
The 14 matching cars have covered 24,019 to 78,707 miles, compared with 46,471 miles for this car.
Matching year, trim, gearbox and fuel does not mean matching mileage or every specification. The AskCar estimate adjusts for these differences.
Browse all BMW X3 cars for sale · 2021 BMW X3 price guide
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Photos
24 photos of this car are on its AskCar page.
How to contact the dealer and its opening hours are on this AskCar page.
As of 30 October 2026, AskCar lists 580,490 cars and vans from 12,695 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.