Used 2020 Audi S4 Price in the US
A used 2020 Audi S4 in the US typically lists for $29,154–$33,994, with a median asking price of $30,995 across 21 active US dealer listings (as of 2026-10-17). The cheapest one listed right now is $19,995, a 2020 Quattro Premium Plus in Leitchfield, KY — below 95% of the market, so expect high mileage, a base trim or a branded title — check the vehicle history.
Browse by model year
typical price per yearCheapest 10 listed right now
ranked by price-
$19,9952020 Audi S4 Quattro Premium Plus137,000 mi · Leitchfield, KY · Bluegrass Auto GroupView listing →
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$28,4962020 Audi S4 Quattro Premium Plus78,781 mi · West Bridgewater, MA · DriveMaxView listing →
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$28,5912020 Audi S4 Quattro Premium Plus96,079 mi · Savannah, GA · Southern Motors AcuraView listing →
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$28,9902020 Audi S4 Quattro Premium Plus87,575 mi · Willow Grove, PA · Selden MotorsView listing →
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$29,1542020 Audi S4 Quattro Premium Plus64,473 mi · Sarasota, FL · Mercedes-Benz of SarasotaView listing → -
$29,2752020 Audi S4 Quattro Premium Plus70,214 mi · Brookfield, WI · Toyota of BrookfieldView listing → -
$29,6242020 Audi S4 Quattro Premium Plus78,583 mi · Charlotte, NC · Hendrick Lexus NorthlakeView listing → -
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$29,9952020 Audi S4 Quattro Premium Plus83,713 mi · Coventry, CT · Coventry MotorcarView listing →
These are the bottom of the market, not the going rate — every one is priced below 95% of active listings. A typical used 2020 Audi S4 asks $29,154–$33,994. 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 2020 Audi S4 cost?
A used 2020 Audi S4 in the US typically lists for $29,154 to $33,994, with a median asking price of $30,995 across 21 active US dealer listings. Nine in ten are priced between $26,995 and $35,569 (as of 2026-10-17, source: UnderMarket Cars).
Is $31,000 a good price for a used 2020 Audi S4?
That sits at about the market median ($30,995) for a used 2020 Audi S4. Under $29,154 puts you in the cheapest quarter of active US listings and under $26,995 in the cheapest 5%; above $35,569 is the priciest 5% (as of 2026-10-17).
What is the cheapest used 2020 Audi S4 for sale right now?
$19,995 — a 2020 Audi S4 Quattro Premium Plus in Leitchfield, KY, $11,000 under the median (as of 2026-10-17).
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 2020 Audi S4 page is regenerated from it when it is requested. The figures on this page are from 2026-10-17.
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Prices updated 2026-10-17. Data covers active dealer listings across the USA.