Live US dealer listings Median-priced benchmark Updated 2026-10-15
Market price · Used 2021 Audi A6 74 listings tracked

Used 2021 Audi A6 Price in the US

A used 2021 Audi A6 in the US typically lists for $23,754–$28,989, with a median asking price of $26,329 across 74 active US dealer listings (as of 2026-10-15). The cheapest one listed right now is $17,325, a 2021 Quattro Premium Sport in Marietta, GA — below 95% of the market, so expect high mileage, a base trim or a branded title — check the vehicle history.

Used 2021 Audi A6 · asking prices74 listings
$19k$31k
Typical range
$23,754 – $28,989
Median
$26,329
Cheapest 5%
under $19,388
Cheapest listed now
$17,325

Browse by model year

typical price per year
More years (19)

Cheapest 10 listed right now

ranked by price
  1. 2021 Audi A6
    $17,325
    2021 Audi A6 Quattro Premium Sport
    116,246 mi · Marietta, GA · Mega Motors
    View listing →
  2. 2021 Audi A6
    $17,565
    2021 Audi A6 Quattro Premium Sport
    113,765 mi · Berwyn, IL · iDrive Motor Sports
    View listing →
  3. 2021 Audi A6
    $18,133
    2021 Audi A6 Quattro Premium Sport
    112,282 mi · Wausau, WI · Kocourek Hyundai
    View listing →
  4. $18,995
    2021 Audi A6 Quattro Premium
    106,809 mi · Waterbury, CT · House of Cars
    View listing →
  5. 2021 Audi A6
    $19,600
    2021 Audi A6 Quattro Premium Sport
    78,537 mi · Wilmington, NC · Blue Water Motorsports
    View listing →
  6. 2021 Audi A6
    $20,394
    2021 Audi A6 Quattro Premium Sport
    81,340 mi · Manassas, VA · Imperial Highline
    View listing →
  7. 2021 Audi A6
    $21,643
    2021 Audi A6 Quattro Premium Sport
    67,086 mi · Elgin, IL · Biggers Mitsubishi
    View listing →
  8. 2021 Audi A6
    $21,699
    2021 Audi A6 Quattro Premium Sport
    75,110 mi · Brookfield, CT · Blasius Mitsubishi
    View listing →
  9. 2021 Audi A6
    $21,799
    2021 Audi A6 Quattro Premium Sport
    58,893 mi · Maple Shade, NJ · CarVision Maple Shade
    View listing →
  10. 2021 Audi A6
    $21,997
    2021 Audi A6 Quattro Premium Plus
    106,573 mi · Beaverton, OR · Audi Beaverton
    View 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 A6 asks $23,754–$28,989. Cars this far under: expect high mileage, a base trim or a branded title — check the vehicle history.

FAQ

How much does a used 2021 Audi A6 cost?

A used 2021 Audi A6 in the US typically lists for $23,754 to $28,989, with a median asking price of $26,329 across 74 active US dealer listings. Nine in ten are priced between $19,388 and $30,998 (as of 2026-10-15, source: UnderMarket Cars).

Is $26,000 a good price for a used 2021 Audi A6?

That sits at about the market median ($26,329) for a used 2021 Audi A6. Under $23,754 puts you in the cheapest quarter of active US listings and under $19,388 in the cheapest 5%; above $30,998 is the priciest 5% (as of 2026-10-15).

What is the cheapest used 2021 Audi A6 for sale right now?

$17,325 — a 2021 Audi A6 Quattro Premium Sport in Marietta, GA, $9,004 under the median (as of 2026-10-15).

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 A6 page is regenerated from it when it is requested. The figures on this page are from 2026-10-15.

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Prices updated 2026-10-15. Data covers active dealer listings across the USA.