2021 BMW X3 3.0 M40i
Price: £36,000. Fair price: £2,459 (7%) over the AskCar estimate of £33,541, our expected asking price for this car from its model, age, mileage and specification, drawing on 3,034 priced BMW X3 adverts on AskCar as of 4 November 2026.
AskCar lists 3,115 used BMW X3 from 1,212 UK dealerships, as of 4 November 2026.
Overview
- Make: BMW
- Model: X3
- Version: 3.0 M40i Auto 4WD Euro 6 5dr (354 bhp)
- Year: 2021
- Mileage: 55,120 miles
- Fuel: Petrol
- Body: SUV, 5 doors, 5 seats
- Engine: 3.0 litres, 354 bhp
- Gearbox: Automatic
- Drive: Four-wheel drive
- Colour: Black
- CO2: 212 g/km
- Emissions standard: Euro 6, ULEZ compliant
About this car
With 55,120 miles on the clock, this 2021 BMW X3 has done roughly 6,200 more miles than a typical 2021 BMW X3. The dealer is asking £36,000, which is £2,459 above the AskCar estimate of £33,541. To work out the AskCar estimate, we analyse UK dealer adverts for 3,034 BMW X3 cars across different ages and specifications. We first recorded this car for sale today. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Sytner Solihull BMW, based in Solihull. How to contact the dealer and its opening hours are on this AskCar page.
Stock data as of 4 November 2026.
Price
Fair price: £2,459 (7%) over the AskCar estimate of £33,541.
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 3,034 priced BMW X3 adverts across different ages and specifications, as of 4 November 2026.
A 2021 BMW X3 with the 3.0 petrol engine is typically advertised at £32,800: the median of the 41 for sale on AskCar, as of 4 November 2026.
Time on sale
AskCar first saw this 2021 BMW X3 advertised today. About half of 2021 BMW X3 cars are gone from sale within a month of being advertised: 142 of the 303 first advertised between 13 July 2026 and 1 October 2026.
Price history
AskCar first saw this advert on 4 November 2026 at £36,000. 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 4 November 2026: valid until 12 July 2027.
It has had 3 MOTs. The latest, on 9 July 2026, passed.
Advisories at the latest test: items removed from driver's view prior to test; nearside rear child seat fitted not allowing full inspection of adult belt.
Mileage at that test: 53,212 miles, which matches the advertised 55,120 miles.
Advertised mileage is about 6,200 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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As of 4 November 2026, AskCar lists 592,552 cars and vans from 12,964 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.