Live US dealer listings Median-priced benchmark Updated 2026-10-19
Market price · Used 2018 Audi A8 16 listings tracked

Used 2018 Audi A8 Price in the US

A used 2018 Audi A8 in the US typically lists for $16,873–$24,221, with a median asking price of $19,248 across 16 active US dealer listings (as of 2026-10-19). The cheapest one listed right now is $12,999, a 2018 Quattro L in Las Vegas, NV — below 95% of the market, so expect high mileage, a base trim or a branded title — check the vehicle history.

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More years (16)

Cheapest 10 listed right now

ranked by price
  1. 2018 Audi A8
    $12,999
    2018 Audi A8 Quattro L
    144,350 mi · Las Vegas, NV · Charlie Cheap Car
    View listing →
  2. $14,916
    2018 Audi A8 Quattro L
    122,626 mi · Houston, TX · ANF Auto Finance
    View listing →
  3. 2018 Audi A8
    $15,900
    2018 Audi A8 Quattro L
    115,931 mi · North Augusta, SC · Zion Best Motors
    View listing →
  4. 2018 Audi A8
    $16,498
    2018 Audi A8 Quattro L
    72,479 mi · Brentwood, NH · Aspire Motoring LLC
    View listing →
  5. 2018 Audi A8
    $16,998
    2018 Audi A8 Quattro L
    104,801 mi · Temecula, CA · CarMix Cali
    View listing →
  6. 2018 Audi A8
    $17,169
    2018 Audi A8 Quattro L
    108,547 mi · Grand Island, NY · Certified AutoBrokers Inc
    View listing →
  7. $18,988
    2018 Audi A8 Quattro Sport L
    99,581 mi · Hollywood, FL · Car Factory Outlet Hollywood
    View listing →
  8. 2018 Audi A8
    $18,996
    2018 Audi A8 Quattro L
    98,039 mi · Addison, TX · Carz City
    View listing →
  9. 2018 Audi A8
    $19,500
    2018 Audi A8 Quattro L
    82,109 mi · Manchester, NH · Private Seller Exchange
    View listing →
  10. 2018 Audi A8
    $20,399
    2018 Audi A8 Quattro L
    79,421 mi · Hoover, AL · Lot 31
    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 2018 Audi A8 asks $16,873–$24,221. Cars this far under: expect high mileage, a base trim or a branded title — check the vehicle history.

FAQ

How much does a used 2018 Audi A8 cost?

A used 2018 Audi A8 in the US typically lists for $16,873 to $24,221, with a median asking price of $19,248 across 16 active US dealer listings. Nine in ten are priced between $14,437 and $27,123 (as of 2026-10-19, source: UnderMarket Cars).

Is $19,000 a good price for a used 2018 Audi A8?

That sits at about the market median ($19,248) for a used 2018 Audi A8. Under $16,873 puts you in the cheapest quarter of active US listings and under $14,437 in the cheapest 5%; above $27,123 is the priciest 5% (as of 2026-10-19).

What is the cheapest used 2018 Audi A8 for sale right now?

$12,999 — a 2018 Audi A8 Quattro L in Las Vegas, NV, $6,249 under the median (as of 2026-10-19).

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 2018 Audi A8 page is regenerated from it when it is requested. The figures on this page are from 2026-10-19.

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Prices updated 2026-10-19. Data covers active dealer listings across the USA.