2020 BMW X3 3.0 M40i
Price: £34,449. Above the going rate: £3,357 (10%) over the AskCar estimate of £31,092, our expected asking price for this car from its model, age, mileage and specification, drawing on 3,043 priced BMW X3 adverts on AskCar as of 11 November 2026.
AskCar lists 3,106 used BMW X3 from 1,225 UK dealerships, as of 11 November 2026.
Overview
- Make: BMW
- Model: X3
- Version: 3.0 M40i Auto 4WD Euro 6 (s/s) 5dr (355 bhp)
- Year: 2020
- Mileage: 51,450 miles
- Fuel: Petrol
- Body: SUV, 5 doors, 5 seats
- Engine: 3.0 litres, 355 bhp
- Gearbox: Automatic
- Drive: Four-wheel drive
- Colour: Black
- CO2: 188 g/km
- Emissions standard: Euro 6, ULEZ compliant
About this car
This 2020 BMW X3 has covered 51,450 miles. The dealer is asking £34,449, which is £3,357 above the AskCar estimate of £31,092. To work out the AskCar estimate, we analyse UK dealer adverts for 3,043 BMW X3 cars across different ages and specifications. This car has been advertised for at least 114 days. Its asking price is down £500. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Paragon Cars London, based in Watford. How to contact the dealer and its opening hours are on this AskCar page.
Stock data as of 11 November 2026.
Paragon Cars London is rated 4.8 out of 5 on Google.
Price
Above the going rate: £3,357 (10%) over the AskCar estimate of £31,092.
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 3,043 priced BMW X3 adverts across different ages and specifications, as of 11 November 2026.
A 2020 BMW X3 with the 3.0 petrol engine is typically advertised at £30,000: the median of the 33 for sale on AskCar, as of 11 November 2026.
Time on sale
The dealer may accept less. This 2020 BMW X3 has been on sale for at least 114 days, and its asking price has been cut by £500. About 6 in 10 of 2020 BMW X3 cars are gone from sale within a month of being advertised: 141 of the 256 first advertised between 11 July 2026 and 8 October 2026.
Price history
AskCar first saw this advert on 20 July 2026 at £34,949. Its asking price is now £34,449, £500 less. The latest price cut was seen on 4 October 2026.
Price changes recorded:
- 21 July 2026: £34,949
- 25 September 2026: £34,749
- 4 October 2026: £34,449
Mileage and MOT
MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 11 November 2026: valid until 13 February 2027.
It has had 4 MOTs. The latest, on 14 February 2025, passed.
There were no advisories at the latest test.
Mileage at that test: 36,471 miles, which matches the advertised 51,450 miles.
Advertised mileage is about 400 miles lower than the median mileage of a 2020 BMW X3 on AskCar.
Browse all BMW X3 cars for sale · 2020 BMW X3 price guide
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Photos
81 photos of this car are on its AskCar page.
As of 11 November 2026, AskCar lists 593,449 cars and vans from 12,847 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.