2021 BMW X3 prices under £20,000
There are 20 used 2021 BMW X3 cars for sale under £20,000 from UK dealers on AskCar, as of 11 November 2026. Typical asking price £18,400 (the median: half cost less, half cost more). The cheapest is £16,295. The middle half are priced between £17,600 and £19,800. Median mileage: about 86,000 miles.
Dealers lowered the asking price on more than half of 2021 BMW X3 cars under £20,000: 13 of the 20 in the 14 days to 11 November 2026.
AskCar lists 3,106 used BMW X3 across the UK, from 1,225 dealerships.
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.
2021 BMW X3 cars for sale now under £20,000, page 2 of 2
This page lists 2021 BMW X3 cars not picked out on page 1, cheapest first.
The AskCar estimate is our expected asking price for that one car, from its model, age, mileage and specification, using the 3,043 priced BMW X3 adverts on AskCar as of 11 November 2026. The figures on this page describe the cars advertised, not a valuation of every 2021 BMW X3.
Each car: year, make, model, engine and trim, power, gearbox, fuel, body, doors, colour; mileage; price and its changes; how the price compares with the AskCar estimate; emissions standard and ULEZ compliance where it holds; MOT; dealer and town; AskCar page. Each car's AskCar page has its full price history and cheaper cars like it.
This list leaves out 1 car whose advertised mileage is lower than the mileage recorded at its last MOT test.
- 2021 BMW X3 2.0 30e M Sport, 288 bhp, automatic, plug-in hybrid (petrol), SUV, 5 doors, black. Mileage: 102,550 miles. Price: £18,995, reduced by £1,500 from £20,495 since AskCar first saw it on 15 September 2026, 57 days ago. Fair price: £966 (5%) over the AskCar estimate of £18,029. Euro 6 emissions standard. ULEZ compliant. MOT: valid until 14 September 2027. Dealer: V12 Sports & Classics Ltd - Hinckley in Hinckley. AskCar page: https://askcar.co.uk/car/bmw-x3-2021-921cb5e32a9f
- 2021 BMW X3 2.0 30e Xline, 288 bhp, automatic, plug-in hybrid (petrol), SUV, 5 doors, grey. Mileage: 56,500 miles. Price: £19,990, unchanged since AskCar first saw it on 9 November 2026, 2 days ago. Fair price: £1,008 (4%) under the AskCar estimate of £20,998. Euro 6 emissions standard. ULEZ compliant. MOT: valid until 22 September 2027. Dealer: BSB Automotive in Dartford. AskCar page: https://askcar.co.uk/car/bmw-x3-2021-0169a9b8b5e1
BMW X3 by gearbox, fuel and body
- Manual BMW X3 (39 cars)
- Petrol BMW X3 (769 cars)
- Diesel BMW X3 (1,914 cars)
- Plug-in hybrid BMW X3 (392 cars)
- BMW X3 estate (60 cars)
BMW X3 under £20,000 by gearbox, fuel and body
BMW X3 prices by year
- 2026 (476 cars)
- 2025 (295 cars)
- 2024 (206 cars)
- 2023 (292 cars)
- 2022 (301 cars)
- 2021 (214 cars)
- 2020 (137 cars)
- 2019 (397 cars)
- 2018 (217 cars)
- 2017 (117 cars)
- 2016 (131 cars)
- 2015 (93 cars)
- 2014 (69 cars)
- 2013 (59 cars)
- 2012 (33 cars)
- 2011 (26 cars)
2021 BMW X3 by price
2021 BMW X3 by trim
BMW X3 by price
- Under £5,000 (54 cars)
- Under £8,000 (165 cars)
- Under £10,000 (263 cars)
- Under £15,000 (503 cars)
- Under £20,000 (912 cars)
- Under £30,000 (1,652 cars)
BMW X3 near you
- In England (2,638 cars)
- In Scotland (222 cars)
- In Wales (113 cars)
- In Northern Ireland (121 cars)
- Near Barnet (296 cars)
- Near Bolton (293 cars)
- Near London (290 cars)
- Near Watford (276 cars)
- Near Richmond upon Thames (266 cars)
- Near Rochdale (262 cars)
- Near Egham (262 cars)
- Near Hillingdon (257 cars)
- Near Wigan (248 cars)
- Near Sutton (227 cars)
- Near Warrington (217 cars)
- Near Tamworth (212 cars)
- Near Manchester (211 cars)
- Near Hale (207 cars)
- Near Berkhamsted (207 cars)
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