2021 BMW X3 M prices

There are 26 used 2021 BMW X3 M cars for sale from UK dealers on AskCar, as of 8 November 2026. Typical asking price £46,000 (the median: half cost less, half cost more). The cheapest is £39,995. The middle half are priced between £43,000 and £50,000. Median mileage: about 36,000 miles.

Dealers lowered the asking price on more than one in ten of 2021 BMW X3 M cars: 5 of the 26 in the 14 days to 8 November 2026.

2021 BMW X3 M prices by engine and mileage

EngineAll mileagesUnder 20,000 miles20,000 to 40,000 miles40,000 to 60,000 miles60,000 miles or more
3.0 petrol£46,000Too few for saleToo few for saleToo few for saleToo few for sale

2021 BMW X3 M prices by trim

TrimTypical asking price, 2021 cars
Competition£46,000

Typical asking prices are of 2021 BMW X3 M cars for sale on 8 November 2026, and are given only where at least 20 cars with a price are for sale.

AskCar lists 130 used BMW X3 M across the UK, from 112 dealerships.

As of 8 November 2026, AskCar lists 595,762 cars and vans from 12,892 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.

2021 BMW X3 M cars for sale now, page 1 of 2

This page picks out up to 10 cars in each of these groups: best value, cheapest, lowest mileage, recently reduced and newly advertised. A car in more than one group is listed in full once. The groups pick only from cars with photos and an AskCar estimate, priced at £500 or more and no more than 25% under that estimate. 25 of the 26 cars listed here meet these rules. Page 2 lists every other 2021 BMW X3 M car, cheapest first, including the one the groups do not pick from.

The AskCar estimate is our expected asking price for that one car, from its model, age, mileage and specification, using the 129 priced BMW X3 M adverts on AskCar as of 8 November 2026. The figures on this page describe the cars advertised, not a valuation of every 2021 BMW X3 M.

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.

Best value 2021 BMW X3 M: priced furthest below the AskCar estimate

These 10 are priced 4% to 12% under their AskCar estimate. Their asking prices run from £41,991 to £49,995.

Cheapest 2021 BMW X3 M: the lowest asking prices

These 10 are priced £39,995 to £44,980. They have covered 30,200 to 60,994 miles.

Lowest-mileage 2021 BMW X3 M

These 10 have covered 6,410 to 34,000 miles. Their asking prices run from £42,990 to £54,995.

Recently reduced 2021 BMW X3 M: the biggest price reductions in the 14 days to 8 November 2026

The dealer lowered the asking price on each of these 5 in the 14 days to 8 November 2026. Their reductions since AskCar first saw them run from £495 to £5,000.

Newly advertised 2021 BMW X3 M: first seen by AskCar in the 7 days to 8 November 2026

These 5 are the most recently advertised. Cars first seen on the same day are listed cheapest first.

BMW X3 M prices by year

BMW X3 M near you

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