Live US dealer listings Median-priced benchmark Updated 2026-10-15
Market price · Used 2021 Audi A4 119 listings tracked

Used 2021 Audi A4 Price in the US

A used 2021 Audi A4 in the US typically lists for $19,499–$22,928, with a median asking price of $21,303 across 119 active US dealer listings (as of 2026-10-15). The cheapest one listed right now is $13,900, a 2021 Quattro Premium in Mt Pleasant, PA — below 95% of the market, so expect high mileage, a base trim or a branded title — check the vehicle history.

Used 2021 Audi A4 · asking prices119 listings
$15k$26k
Typical range
$19,499 – $22,928
Median
$21,303
Cheapest 5%
under $15,998
Cheapest listed now
$13,900

Browse by model year

typical price per year
More years (18)

Cheapest 10 listed right now

ranked by price
  1. 2021 Audi A4
    $13,900
    2021 Audi A4 Quattro Premium
    39,000 mi · Mt Pleasant, PA · Huffman's Auto Sales Inc.
    View listing →
  2. 2021 Audi A4
    $13,998
    2021 Audi A4 Quattro Premium
    105,538 mi · Lansdale, PA · Lansdale Speed Motor
    View listing →
  3. 2021 Audi A4
    $14,990
    2021 Audi A4 Quattro Prestige
    115,690 mi · Goldsboro, NC · MT Car Sales Inc
    View listing →
  4. 2021 Audi A4
    $15,082
    2021 Audi A4 Quattro Premium
    101,766 mi · Houston, TX · ANF Auto Finance
    View listing →
  5. 2021 Audi A4
    $15,795
    2021 Audi A4 Quattro Premium
    104,933 mi · Little Ferry, NJ · Magic Auto Sales
    View listing →
  6. $15,995
    2021 Audi A4 Quattro Premium Plus
    117,249 mi · Milford, OH · Premier Automotive
    View listing →
  7. $15,998
    2021 Audi A4 Quattro Premium
    99,359 mi · West Bountiful, UT · Utah Auto Pros
    View listing →
  8. 2021 Audi A4
    $16,249
    2021 Audi A4 Quattro Premium
    102,824 mi · Cleveland, OH · North Coast Mitsubishi West Cleveland
    View listing →
  9. 2021 Audi A4
    $17,214
    2021 Audi A4 Quattro Premium
    98,153 mi · Bend, OR · Auto Kings
    View listing →
  10. 2021 Audi A4
    $17,385
    2021 Audi A4 Quattro Premium
    60,371 mi · Tampa, FL · Autolinx
    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 A4 asks $19,499–$22,928. 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 A4 cost?

A used 2021 Audi A4 in the US typically lists for $19,499 to $22,928, with a median asking price of $21,303 across 119 active US dealer listings. Nine in ten are priced between $15,998 and $25,423 (as of 2026-10-15, source: UnderMarket Cars).

Is $21,000 a good price for a used 2021 Audi A4?

That sits at about the market median ($21,303) for a used 2021 Audi A4. Under $19,499 puts you in the cheapest quarter of active US listings and under $15,998 in the cheapest 5%; above $25,423 is the priciest 5% (as of 2026-10-15).

What is the cheapest used 2021 Audi A4 for sale right now?

$13,900 — a 2021 Audi A4 Quattro Premium in Mt Pleasant, PA, $7,403 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 A4 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.