Used 2021 BMW 840i Price in the US
A used 2021 BMW 840i in the US typically lists for $40,849–$46,069, with a median asking price of $42,856 across 16 active US dealer listings (as of 2026-09-03). The cheapest one listed right now is $33,966, a 2021 Xdrive GC in Arlington, VA — below 95% of the market, so expect an older model year, a base trim or high mileage.
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cheapest per yearCheapest 10 listed right now
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$40,7182021 BMW 840i Xdrive GC69,420 mi · Charleston, SC · Rick Hendrick BMW CharlestonView listing →
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$43,4902021 BMW 840i Xdrive GC31,415 mi · Lockport, IL · Bettenhausen Chrysler Dodge Jeep Ram of LockportView listing → -
These are the bottom of the market, not the going rate — every one is priced below 95% of active listings. A typical used 2021 BMW 840i asks $40,849–$46,069. Cars this far under usually carry an older model year, a base trim or high mileage.
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10 pinnedFAQ
How much does a used 2021 BMW 840i cost?
A used 2021 BMW 840i in the US typically lists for $40,849 to $46,069, with a median asking price of $42,856 across 16 active US dealer listings. Nine in ten are priced between $34,738 and $50,321 (as of 2026-09-03, source: UnderMarket Cars).
Is $43,000 a good price for a used 2021 BMW 840i?
That sits at about the market median ($42,856) for a used 2021 BMW 840i. Under $40,849 puts you in the cheapest quarter of active US listings and under $34,738 in the cheapest 5%; above $50,321 is the priciest 5% (as of 2026-09-03).
What is the cheapest used 2021 BMW 840i for sale right now?
$33,966 — a 2021 BMW 840i Xdrive GC in Arlington, VA, $8,890 under the median (as of 2026-09-03).
Are these MSRP or real asking prices?
Real asking prices from active US dealer listings, deduplicated by VIN — not manufacturer MSRP. They already reflect dealer discounts, and they exclude tax, title, registration and dealer fees.
How often are prices updated?
UnderMarket Cars refreshes US dealer listings continuously and re-generates this used 2021 BMW 840i price page at least twice a day. The data date shown on this page is 2026-09-03.
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Prices updated 2026-09-03. Data covers active dealer listings across the USA.