Used 2018 Audi A6 Price in the US
A used 2018 Audi A6 in the US typically lists for $14,349–$19,990, with a median asking price of $16,823 across 142 active US dealer listings (as of 2026-08-28). The cheapest one listed right now is $6,999, a 2018 Quattro Sport Premium in Bedford, VA — below 95% of the market, so expect an older model year, a base trim or high mileage.
- Typical range
- $14,349 – $19,990
- Median
- $16,823
- Cheapest 5%
- under $10,500
- Cheapest listed now
- $6,999
Browse by model year
cheapest per year- All years
- 2026 · from $50,716
- 2025 · from $38,084
- 2024 · from $22,697
- 2023 · from $22,777
- 2022 · from $21,250
- 2021 · from $16,690
- 2020 · from $16,495
- 2019 · from $10,843
- 2018 · from $6,700
- 2017 · from $6,999
- 2016 · from $4,500
- 2015 · from $5,498
- 2014 · from $4,998
- 2013 · from $5,150
- 2012 · from $2,500
- 2011 · from $4,500
- 2010 · from $4,900
- 2009 · from $4,100
- 2008 · from $3,549
- 2007 · from $2,900
- 2006 · from $3,491
- 2005 · from $4,900
- 2004 · from $2,500
- 2003 · from $3,345
- 2002 · from $2,995
- 2001 · from $2,594
- 2000 · from $3,995
Cheapest 10 listed right now
ranked by price-
$6,9992018 Audi A6 Quattro Sport Premium137,990 mi · Bedford, VA · East Coast Auto SourceView listing → -
$8,5252018 Audi A6 Quattro Sport Premium25,238 mi · Hollywood, FL · Elite Auto AuctionsView listing →
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$8,9882018 Audi A6 Quattro Premium Plus194,619 mi · Des Plaines, IL · Jidd Motors MitsubishiView listing → -
$8,9952018 Audi A6 Quattro Sport Premium135,812 mi · East Hartford, CT · Nutmeg Auto WholesalersView listing → -
$9,7582018 Audi A6 Sport Premium140,955 mi · Indianapolis, IN · Metro Nissan of IndianapolisView listing →
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$9,9002018 Audi A6 Quattro Premium Plus165,519 mi · Lafayette, IN · Momax Auto SalesView listing → -
$9,9982018 Audi A6 Quattro Sport Premium124,956 mi · Arlington Heights, IL · Arlington ImportsView listing → -
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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 A6 asks $14,349–$19,990. 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 2018 Audi A6 cost?
A used 2018 Audi A6 in the US typically lists for $14,349 to $19,990, with a median asking price of $16,823 across 142 active US dealer listings. Nine in ten are priced between $10,500 and $23,985 (as of 2026-08-28, source: UnderMarket Cars).
Is $17,000 a good price for a used 2018 Audi A6?
That sits at about the market median ($16,823) for a used 2018 Audi A6. Under $14,349 puts you in the cheapest quarter of active US listings and under $10,500 in the cheapest 5%; above $23,985 is the priciest 5% (as of 2026-08-28).
What is the cheapest used 2018 Audi A6 for sale right now?
$6,999 — a 2018 Audi A6 Quattro Sport Premium in Bedford, VA, $9,824 under the median (as of 2026-08-28).
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 2018 Audi A6 price page at least twice a day. The data date shown on this page is 2026-08-28.
Explore more
Prices updated 2026-08-28. Data covers active dealer listings across the USA.