2021 BMW X3 prices

This 2021 BMW X3 is no longer listed. Here are similar cars for sale now.

There are 217 used 2021 BMW X3 cars for sale from UK dealers on AskCar, as of 4 November 2026. Typical asking price £25,000 (the median: half cost less, half cost more). The cheapest is £16,295. The middle half are priced between £23,000 and £28,500. Median mileage: about 49,000 miles.

Dealers lowered the asking price on more than half of 2021 BMW X3 cars: 116 of the 217 in the 14 days to 4 November 2026.

2021 BMW X3 prices by engine and mileage

A 2021 BMW X3 3.0 diesel car typically costs £33,000, against £24,500 for the 2.0 diesel, as of 4 November 2026.

A 2021 BMW X3 2.0 diesel car with 20,000 to 40,000 miles typically costs £27,000, against £21,000 with 60,000 miles or more.

EngineAll mileagesUnder 20,000 miles20,000 to 40,000 miles40,000 to 60,000 miles60,000 miles or more
2.0 diesel£24,500Too few for sale£27,000£24,500£21,000
3.0 diesel£33,000Too few for saleToo few for saleToo few for saleToo few for sale

2021 BMW X3 prices by trim

TrimTypical asking price, 2021 cars
M Sport£25,000
XlineToo few for sale
SEToo few for sale

Only 13 of the 2021 BMW X3 cars for sale are Xline, too few to give a typical asking price.

Only 3 of the 2021 BMW X3 cars for sale are SE, too few to give a typical asking price.

Typical asking prices are of 2021 BMW X3 cars for sale on 4 November 2026, and are given only where at least 20 cars with a price are for sale.

2021 BMW X3 against other years

A 2020 BMW X3 car has a typical asking price of £23,500 and a 2022 one £31,000, as of 4 November 2026.

AskCar lists 3,115 used BMW X3 across the UK, from 1,212 dealerships.

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.

2021 BMW X3 cars for sale now, page 1 of 5

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. 208 of the 210 cars listed here meet these rules. Pages 2 to 5 list every other 2021 BMW X3 car, cheapest first, including the 2 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 3,034 priced BMW X3 adverts on AskCar as of 4 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 7 cars whose advertised mileage is lower than the mileage recorded at their last MOT test.

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

These 10 are priced 10% to 17% under their AskCar estimate. Their asking prices run from £16,999 to £26,750.

Cheapest 2021 BMW X3: the lowest asking prices

These 10 are priced £16,295 to £18,450. They have covered 60,415 to 114,230 miles.

Lowest-mileage 2021 BMW X3

These 10 have covered 14,924 to 24,111 miles. Their asking prices run from £23,681 to £37,490.

Recently reduced 2021 BMW X3: the biggest price reductions in the 14 days to 4 November 2026

The dealer lowered the asking price on each of these 10 in the 14 days to 4 November 2026. Their reductions since AskCar first saw them run from £3,119 to £5,730.

Newly advertised 2021 BMW X3: first seen by AskCar in the 7 days to 4 November 2026

These 10 are the most recently advertised. Cars first seen on the same day are listed cheapest first.

BMW X3 by gearbox, fuel and body

BMW X3 prices by year

BMW X3 by trim

2021 BMW X3 by price

2021 BMW X3 by trim

BMW X3 by price

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