Used 2018 Audi A5 Price in the US
A used 2018 Audi A5 in the US typically lists for $15,995–$21,516, with a median asking price of $18,600 across 352 active US dealer listings (as of 2026-08-30). The cheapest one listed right now is $9,495, a 2018 S Line Quattro in Decatur, IL — below 95% of the market, so expect an older model year, a base trim or high mileage.
- Typical range
- $15,995 – $21,516
- Median
- $18,600
- Cheapest 5%
- under $12,896
- Cheapest listed now
- $9,495
Browse by model year
cheapest per year- All years
- 2026 · from $47,940
- 2025 · from $26,225
- 2024 · from $23,900
- 2023 · from $21,395
- 2022 · from $16,995
- 2021 · from $14,500
- 2020 · from $12,220
- 2019 · from $11,500
- 2018 · from $9,495
- 2017 · from $9,990
- 2016 · from $5,225
- 2015 · from $6,400
- 2014 · from $5,500
- 2013 · from $3,499
- 2012 · from $6,350
- 2011 · from $2,495
- 2010 · from $3,900
- 2009 · from $3,500
- 2008 · from $6,987
Cheapest 10 listed right now
ranked by price-
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$10,8552018 Audi A5 S Line Quattro160,164 mi · Arlington Heights, IL · Autos of ChicagoView listing → -
$10,9802018 Audi A5 Quattro Premium Plus143,474 mi · Tampa, FL · Blue Ocean Auto SalesView listing → -
$10,9992018 Audi A5 Quattro Premium Plus147,350 mi · Fredericksburg, VA · Beltway Motors LLCView listing →
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$11,5002018 Audi A5 S Line Quattro143,000 mi · Birmingham, AL · Southside Automotive Group LLCView listing → -
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$11,5002018 Audi A5 Quattro Premium Plus139,511 mi · Griffith, IN · Lake Motor GroupView 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 A5 asks $15,995–$21,516. Cars this far under usually carry an older model year, a base trim or high mileage.
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10 pinnedFAQ
How much does a used 2018 Audi A5 cost?
A used 2018 Audi A5 in the US typically lists for $15,995 to $21,516, with a median asking price of $18,600 across 352 active US dealer listings. Nine in ten are priced between $12,896 and $26,218 (as of 2026-08-30, source: UnderMarket Cars).
Is $19,000 a good price for a used 2018 Audi A5?
That sits at about the market median ($18,600) for a used 2018 Audi A5. Under $15,995 puts you in the cheapest quarter of active US listings and under $12,896 in the cheapest 5%; above $26,218 is the priciest 5% (as of 2026-08-30).
What is the cheapest used 2018 Audi A5 for sale right now?
$9,495 — a 2018 Audi A5 S Line Quattro in Decatur, IL, $9,105 under the median (as of 2026-08-30).
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 A5 price page at least twice a day. The data date shown on this page is 2026-08-30.
Explore more
Prices updated 2026-08-30. Data covers active dealer listings across the USA.