2021 BMW 3 Series SE PRO prices

There are 29 used 2021 BMW 3 Series SE PRO cars for sale from UK dealers on AskCar, as of 11 November 2026. Typical asking price £15,000 (the median: half cost less, half cost more). The cheapest is £10,000. The middle half are priced between £12,500 and £16,400. Median mileage: about 73,000 miles.

Dealers lowered the asking price on more than a third of 2021 BMW 3 Series SE PRO cars: 10 of the 29 in the 14 days to 11 November 2026.

2021 BMW 3 Series SE PRO prices by engine and mileage

EngineAll mileagesUnder 20,000 miles20,000 to 40,000 miles40,000 to 60,000 miles60,000 miles or more
2.0 plug-in hybrid£15,000Too few for saleToo few for saleToo few for saleToo few for sale

Typical asking prices are of 2021 BMW 3 Series SE PRO cars for sale on 11 November 2026, and are given only where at least 20 cars with a price are for sale.

2021 BMW 3 Series SE PRO against other years

A 2022 BMW 3 Series SE PRO car has a typical asking price of £15,600, as of 11 November 2026.

AskCar lists 7,158 used BMW 3 Series across the UK, from 2,706 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 3 Series SE PRO 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. All 28 cars listed here meet these rules. Page 2 lists every other 2021 BMW 3 Series SE PRO car, cheapest first.

The AskCar estimate is our expected asking price for that one car, from its model, age, mileage and specification, using the 6,905 priced BMW 3 Series adverts on AskCar as of 11 November 2026. The figures on this page describe the cars advertised, not a valuation of every 2021 BMW 3 Series SE PRO.

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.

Best value 2021 BMW 3 Series SE PRO: priced furthest below the AskCar estimate

These 10 are priced 3% to 15% under their AskCar estimate. Their asking prices run from £11,626 to £16,999.

Cheapest 2021 BMW 3 Series SE PRO: the lowest asking prices

These 10 are priced £10,000 to £13,399. They have covered 76,704 to 129,000 miles.

Lowest-mileage 2021 BMW 3 Series SE PRO

These 10 have covered 33,850 to 52,634 miles. Their asking prices run from £15,895 to £17,998.

Recently reduced 2021 BMW 3 Series SE PRO: the biggest price reductions in the 14 days to 11 November 2026

The dealer lowered the asking price on each of these 10 in the 14 days to 11 November 2026. Their reductions since AskCar first saw them run from £200 to £2,099.

Newly advertised 2021 BMW 3 Series SE PRO: first seen by AskCar in the 7 days to 11 November 2026

These 2 are the most recently advertised. Cars first seen on the same day are listed cheapest first.

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