2018 Audi S6 prices in the U.S.
The median asking price for a 2018 Audi S6 in the U.S. is $30,498 based on 13 active listings.
As of July 25, 2026, the median asking price for a 2018 Audi S6 in the U.S. is $30,498, based on 13 active dealer listings tracked by VinAssessment.
◷ Updated July 25, 2026 ▤ 13 active dealer listings, refreshed daily Methodology →
Typical: $26,000–$31,995 — the middle half of 13 asking prices
Why the wide range? Price depends mostly on configuration and mileage — see below. This spread covers the middle 96% of asking prices: we exclude the cheapest and priciest 2% (payment-priced ads, typos, salvage) so outliers don't distort it.
What moves the price on a 2018 Audi S6
The $26,000–$31,995 typical range isn't randomness — one factor explains most of it:
The same car typically asks $24,339 in Georgia but $31,990 in California.
Trim-level pricing isn't reliable enough for this model yet — mileage and configuration explain most of the spread above.
Price history
Median asking price by month · shaded band is the typical range (25th–75th percentile)
The median listing price for a 2018 Audi S6 is $28,294 (July 2026) — down 5.5% from $29,955 in August 2025.
Monthly price table
| Month | Median price | Typical range | Vehicles listed |
|---|---|---|---|
| July 2026 | $28,294 | $24K–$33K | 14 |
| June 2026 | $28,066 | $24K–$32K | 20 |
| May 2026 | $27,644 | $24K–$32K | 20 |
| April 2026 | $28,940 | $25K–$31K | 24 |
| March 2026 | $27,755 | $23K–$32K | 26 |
| February 2026 | $29,280 | $27K–$31K | 31 |
| January 2026 | $29,945 | $25K–$32K | 29 |
| December 2025 | $28,995 | $25K–$35K | 25 |
| November 2025 | $28,700 | $25K–$32K | 19 |
| October 2025 | $32,118 | $29K–$34K | 18 |
| August 2025 | $29,955 | $28K–$33K | 14 |
2018 Audi S6 prices by state
| State | Typical price | Listed this year | Active now |
|---|---|---|---|
| California | $31,990 | 11 | 0 |
| Pennsylvania | $27,614 | 11 | 1 Shop 2017–2019 nearby → |
| Texas | $31,214 | 10 | 0 |
| Georgia | $24,339 | 8 | 2 Shop 2017–2019 nearby → |
| Illinois | $29,942 | 6 | 0 |
| New Jersey | $28,514 | 6 | 3 Shop 2017–2019 nearby → |
Listed this year counts every 2018 Audi S6 first listed in 2026 (sold and active), with currently active cars as a floor. Typical price is the median of each car's latest asking price — or the average of active listings where this-year data is thin.
Keep exploring S6 prices
2018 Audi S6 · $29,631 typical · 13 listingsOther Audi S6 years
More 2018 Audi prices
Frequently asked questions
Why do 2018 Audi S6 prices range from $22,938 to $37,168?
The spread comes down to configuration and mileage: higher-mileage, base-configuration examples sit near the low end, while low-mileage and premium configurations reach the top. Half of all listings fall between $26,000 and $31,995 — see the mileage and trim breakdowns above for where a specific vehicle lands.
Is $29,631 a good price for a 2018 Audi S6?
$29,631 is the market average as of July 25, 2026. Anything meaningfully below the $30,498 median is priced to move — but always compare within the same trim and mileage band, since those two factors drive most of the spread.
How many 2018 Audi S6 are for sale right now?
13 in total, nearly all pre-owned. Counts refresh daily from live dealer inventory.
How we calculate these prices
We track 13 active listings for this vehicle across dealer sites nationwide, updated every day. Average and median are computed from real asking prices on live listings. We exclude the top and bottom 2% of prices to remove data errors, salvage titles, and monthly-payment figures posted as if they were sale prices. Prices reflect dealer asking prices — not final sale prices — and exclude taxes, fees, and incentives. Trim and mileage move the price more than any other factor; see the breakdowns above.
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