Used 2021 Audi S4 Price in the US
A used 2021 Audi S4 in the US typically lists for $29,386–$36,836, with a median asking price of $34,495 across 18 active US dealer listings (as of 2026-08-27). The cheapest one listed right now is $25,800, a 2021 Quattro Prestige in Franktown, CO — below 95% of the market, so expect an older model year, a base trim or high mileage.
Browse by model year
cheapest per year- All years
- 2024 · from $41,962
- 2023 · from $33,900
- 2022 · from $31,385
- 2021 · from $25,800
- 2020 · from $24,980
- 2019 · from $12,999
- 2018 · from $14,999
- 2016 · from $14,998
- 2015 · from $3,995
- 2014 · from $8,861
- 2013 · from $7,450
- 2012 · from $7,995
- 2011 · from $8,499
- 2010 · from $8,500
- 2009 · from $10,990
- 2008 · from $7,990
- 2007 · from $3,500
- 2006 · from $4,495
- 2005 · from $3,999
- 2004 · from $4,900
- 2001 · from $12,477
- 2000 · from $12,000
Cheapest 10 listed right now
ranked by price-
$25,9992021 Audi S4 Quattro Premium Plus84,205 mi · Sacramento, CA · Abe's MotorsportsView listing → -
-
$26,4852021 Audi S4 Quattro Prestige91,063 mi · Fort Washington, PA · Audi Fort WashingtonView listing → -
$28,4562021 Audi S4 Quattro Premium Plus87,371 mi · West Bridgewater, MA · S & D Auto Sales - West BridgewaterView listing →
-
-
$32,9002021 Audi S4 Quattro Premium Plus60,315 mi · Las Vegas, NV · PK Motors GroupView listing → -
$33,1392021 Audi S4 Quattro Prestige68,927 mi · Flemington, NJ · Fred Beans Nissan of FlemingtonView listing → -
$34,4092021 Audi S4 Quattro Prestige57,848 mi · Belleville, IL · Auffenberg Ford SouthView listing →
-
$34,5822021 Audi S4 Quattro Premium54,127 mi · Eden Prairie, MN · iDeal Auto ImportsView 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 S4 asks $29,386–$36,836. Cars this far under usually carry an older model year, a base trim or high mileage.
Deals on the map
10 pinnedFAQ
How much does a used 2021 Audi S4 cost?
A used 2021 Audi S4 in the US typically lists for $29,386 to $36,836, with a median asking price of $34,495 across 18 active US dealer listings. Nine in ten are priced between $25,969 and $41,330 (as of 2026-08-27, source: UnderMarket Cars).
Is $34,000 a good price for a used 2021 Audi S4?
That sits at about the market median ($34,495) for a used 2021 Audi S4. Under $29,386 puts you in the cheapest quarter of active US listings and under $25,969 in the cheapest 5%; above $41,330 is the priciest 5% (as of 2026-08-27).
What is the cheapest used 2021 Audi S4 for sale right now?
$25,800 — a 2021 Audi S4 Quattro Prestige in Franktown, CO, $8,695 under the median (as of 2026-08-27).
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 Audi S4 price page at least twice a day. The data date shown on this page is 2026-08-27.
Explore more
Prices updated 2026-08-27. Data covers active dealer listings across the USA.