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2,244 sales tracked since 28 May 2026 · 552 for sale now
Every 2021 3 Series that's come off Autotrader since 28 May 2026, with its final asking price and how long it took to sell.
What each 2021 3 Series variant sold for (filled dots) and what the 552 for sale are asking (rings), with monthly medians drawn through them. Click a dot to open the car.
Solid lines: median sold price per month (3+ sales). Dashed lines: median asking price of cars currently for sale, by the month they were listed. 14 cars listed before the chart starts are not shown.
By month sold, all variants
How long sold cars were listed
How many cars were listed each day since tracking began
Asking price range, with the median marked
Listings added and sold each month
552 live listings from Autotrader · from £8,500 · median £19,999
Sold and asking prices against mileage. Each dot is a car; click one to open it.
Showing an even sample of up to 1,200 cars per series so the chart stays quick.
What 2021 BMW 3 Series cars sell for and how many are on Autotrader UK right now. Updated 19 Oct 2026.
The median asking price for a used 2021 BMW 3 Series on Autotrader UK is £19,999, across 552 cars for sale as of 19 Oct 2026. The 2,244 2021 BMW 3 Series cars recorded as sold since 28 May 2026 went for a median of £20,495.
The median 2021 BMW 3 Series sells within 28 days of being listed on Autotrader, based on 2,244 recorded sales.
There are 552 used 2021 BMW 3 Series cars for sale on Autotrader UK as of 19 Oct 2026. Autotrender has recorded 2,244 sales of 2021 BMW 3 Series cars so far.
Autotrender records every BMW 3 Series listing on Autotrader UK twice a day and groups them by registration year. A car counts as sold when its advert is removed, and its sold price is the final asking price before it came off; days to sell run from the advert's listing date to its removal. Medians are used throughout, and figures are only stated once at least 5 sales have been recorded.
Recomputed after every Autotrader scan. Month-by-month trends across all years: BMW 3 Series market report · About Autotrender