2021 BMW X3 3.0 M40i
Version: 3.0 M40i Auto 4WD Euro 6 5dr (354 bhp)
Price: £36,500. Fair price: £1,124 (3%) over the AskCar estimate of £35,376, our expected asking price for this car from its model, age, mileage and specification, drawing on 2,998 priced BMW X3 adverts on AskCar as of 1 November 2026.
AskCar lists 3,053 used BMW X3 from 1,190 UK dealerships, as of 1 November 2026.
Overview
- Make
- BMW
- Model
- X3
- Version
- 3.0 M40i Auto 4WD Euro 6 5dr (354 bhp)
- Mileage
- 43,574 miles
- Year
- 2021
- Fuel type
- Petrol
- Body type
- SUV
- Engine
- 3.0 L
- Gearbox
- Automatic
- Power
- 354 bhp
- Seats
- 5
- CO2
- 213 g/km
- Colour
- Grey
- Doors
- 5
- Driven wheels
- Four Wheel Drive
- Engine badge
- M40i
- Emissions standard
- Euro 6
About this car
At 43,574 miles, this 2021 BMW X3 has covered about 5,300 fewer miles than other 2021 BMW X3 cars. Priced at £36,500, it is advertised £1,124 above the AskCar estimate of £35,376. To work out the AskCar estimate, we analyse UK dealer adverts for 2,998 BMW X3 cars across different ages and specifications. We first recorded this car for sale 1 day ago. Its recorded MOT is valid until 5 February 2027, and its advertised mileage is consistent with the latest MOT reading. The seller is Sytner Solihull BMW, based in Solihull.
Stock data as of 1 November 2026.
Price history
AskCar first saw this advert on 31 October 2026, 1 day ago.
| Date observed | Asking price |
|---|---|
| 31 October 2026 | £36,500 |
| 1 November 2026 | £36,500 |
Price and mileage comparison
Fair price: £1,124 (3%) over the AskCar estimate of £35,376.
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 2,998 priced BMW X3 adverts across different ages and specifications, as of 1 November 2026.
Advertised mileage is about 5,300 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: valid until 5 February 2027. 39,765 miles at the last test.
Other matching cars
15 other 2021 BMW X3 automatic petrol cars are for sale at UK dealers from £28,946 to £41,880, as of 1 November 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 15 matching cars have covered 24,019 to 78,707 miles, compared with 43,574 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
More like this
How to contact the dealer and its opening hours are on this AskCar page.
As of 1 November 2026, AskCar lists 578,994 cars and vans from 12,654 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.