Used 2021 Audi RS 6 Avant Price in the US
A used 2021 Audi RS 6 Avant in the US typically lists for $83,580–$95,053, with a median asking price of $89,262 across 32 active US dealer listings (as of 2026-10-13). The cheapest one listed right now is $69,995, a 2021 Quattro in Milford, CT — below 95% of the market, so expect high mileage, a base trim or a branded title — check the vehicle history.
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typical price per yearCheapest 10 listed right now
ranked by price-
$69,9952021 Audi RS 6 Avant Quattro74,681 mi · Milford, CT · Stevens Ford of MilfordView listing → -
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$82,5972021 Audi RS 6 Avant Quattro54,959 mi · Kennesaw, GA · Grand Motorcars KennesawView listing → -
$82,6652021 Audi RS 6 Avant Quattro58,437 mi · Mount Kisco, NY · Land Rover Mt KiscoView listing → -
$83,2342021 Audi RS 6 Avant Quattro60,340 mi · Bloomington, IN · Foreign Auto ConnectView listing → -
$83,6952021 Audi RS 6 Avant Quattro44,258 mi · Summerville, SC · McElveen Buick GMCView 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 Audi RS 6 Avant asks $83,580–$95,053. Cars this far under: expect high mileage, a base trim or a branded title — check the vehicle history.
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10 pinnedFAQ
How much does a used 2021 Audi RS 6 Avant cost?
A used 2021 Audi RS 6 Avant in the US typically lists for $83,580 to $95,053, with a median asking price of $89,262 across 32 active US dealer listings. Nine in ten are priced between $79,054 and $103,352 (as of 2026-10-13, source: UnderMarket Cars).
Is $89,000 a good price for a used 2021 Audi RS 6 Avant?
That sits at about the market median ($89,262) for a used 2021 Audi RS 6 Avant. Under $83,580 puts you in the cheapest quarter of active US listings and under $79,054 in the cheapest 5%; above $103,352 is the priciest 5% (as of 2026-10-13).
What is the cheapest used 2021 Audi RS 6 Avant for sale right now?
$69,995 — a 2021 Audi RS 6 Avant Quattro in Milford, CT, $19,267 under the median (as of 2026-10-13).
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?
The listing data behind UnderMarket Cars is rebuilt from live US dealer inventory every few hours, and this used 2021 Audi RS 6 Avant page is regenerated from it when it is requested. The figures on this page are from 2026-10-13.
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Prices updated 2026-10-13. Data covers active dealer listings across the USA.