2018 Audi S4 prices in the U.S.
The median pre-owned asking price for a 2018 Audi S4 in the U.S. is $23,880 based on 76 pre-owned listings (of 77 total).
As of July 25, 2026, the median asking price for a used 2018 Audi S4 in the U.S. is $23,880, based on 76 active dealer listings tracked by VinAssessment.
◷ Updated July 25, 2026 ▤ 77 active dealer listings, refreshed daily Methodology →
Typical: $20,206–$27,590 — the middle half of 77 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 S4
The $20,206–$27,590 typical range isn't randomness — two factors explain most of it:
Asking prices run about $31,959 at 30K–45K miles and fall to $19,857 over 105K miles — roughly $1,600 for every 10,000 miles.
The same car typically asks $21,499 in Minnesota but $27,092 in Pennsylvania.
Find your mileage and trim in the configurator below.
Configure the exact car
Modelled from 77 real asking prices, adjusted for mileage and location. Not a formal appraisal.
2018 Audi S4: a fair price for your mileage
A 2018 Audi S4 sheds roughly $1,600 for every 10,000 miles. Find your mileage below.
| Mileage ⓘ | Based on ⓘ | Fair price ⓘ | Typical range ⓘ |
|---|---|---|---|
| 30K–45K miles | 5 listings | $31,959 | $31K–$32K |
| 45K–60K miles | 8 listings | $29,218 | $28K–$30K |
| 60K–75K miles | 15 listings | $26,799 | $26K–$28K |
| 75K–90K miles | 9 listings | $25,349 | $24K–$26K |
| 90K–105K miles | 17 listings | $22,145 | $20K–$23K |
| Over 105K miles | 22 listings | $19,857 | $18K–$21K |
Same trim and condition assumed — mileage is the biggest lever after configuration.
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 S4 is $24,542 (July 2026) — down 9.1% from $26,998 in August 2025.
Monthly price table
| Month | Median price | Typical range | Vehicles listed |
|---|---|---|---|
| July 2026 | $24,542 | $21K–$28K | 92 |
| June 2026 | $24,795 | $22K–$28K | 95 |
| May 2026 | $24,576 | $22K–$28K | 107 |
| April 2026 | $24,995 | $22K–$28K | 91 |
| March 2026 | $24,098 | $22K–$28K | 114 |
| February 2026 | $24,640 | $21K–$27K | 124 |
| January 2026 | $24,792 | $21K–$27K | 100 |
| December 2025 | $24,693 | $21K–$27K | 78 |
| November 2025 | $24,698 | $22K–$27K | 54 |
| October 2025 | $24,995 | $23K–$27K | 60 |
| September 2025 | $26,699 | $24K–$30K | 56 |
| August 2025 | $26,998 | $25K–$29K | 56 |
2018 Audi S4 prices by state
| State | Typical price | Listed this year | Active now |
|---|---|---|---|
| Texas | $24,590 | 37 | 5 Shop 2017–2019 nearby → |
| Illinois | $25,637 | 34 | 5 Shop 2017–2019 nearby → |
| California | $26,998 | 33 | 4 Shop 2017–2019 nearby → |
| New Jersey | $24,495 | 29 | 3 Shop 2017–2019 nearby → |
| Florida | $22,667 | 26 | 3 Shop 2017–2019 nearby → |
| Virginia | $24,748 | 26 | 5 Shop 2017–2019 nearby → |
| Pennsylvania | $27,092 | 22 | 8 Shop 2017–2019 nearby → |
| Colorado | $24,295 | 22 | 4 Shop 2017–2019 nearby → |
| Ohio | $23,999 | 21 | 3 Shop 2017–2019 nearby → |
| Washington | $24,711 | 19 | 4 Shop 2017–2019 nearby → |
| Georgia | $23,192 | 18 | 3 Shop 2017–2019 nearby → |
| Massachusetts | $25,446 | 16 | 5 Shop 2017–2019 nearby → |
| Connecticut | $25,336 | 14 | 4 Shop 2017–2019 nearby → |
| Minnesota | $21,499 | 13 | 1 Shop 2017–2019 nearby → |
| New York | $25,196 | 12 | 1 Shop 2017–2019 nearby → |
| Utah | $24,500 | 11 | 2 Shop 2017–2019 nearby → |
| Maryland | $25,425 | 10 | 1 Shop 2017–2019 nearby → |
| Oregon | $24,792 | 10 | 1 Shop 2017–2019 nearby → |
| Indiana | $22,234 | 9 | 4 Shop 2017–2019 nearby → |
| Wisconsin | $25,999 | 7 | 1 Shop 2017–2019 nearby → |
| North Carolina | $23,690 | 7 | 0 |
| Nevada | $24,952 | 6 | 0 |
| Missouri | $26,230 | 6 | 1 Shop 2017–2019 nearby → |
| Arizona | $25,842 | 5 | 1 Shop 2017–2019 nearby → |
Listed this year counts every 2018 Audi S4 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 S4 prices
2018 Audi S4 · $24,052 typical · 77 listingsOther Audi S4 years
Live 2018 Audi S4 listings, priced by VIN
Every VIN links to a full market report: decode, active listings and the local price band. Shop 2017–2019 Audi S4 listings on VehiSales →.
More 2018 Audi prices
Frequently asked questions
Why do 2018 Audi S4 prices range from $14,982 to $32,476?
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 $20,206 and $27,590 — see the mileage and trim breakdowns above for where a specific vehicle lands.
How much should mileage change the price of a 2018 Audi S4?
Expect roughly $1,600 less for every 10,000 miles on the odometer. A 60K-mile example should cost about $4,800 less than a 30K-mile one of the same trim — check the fair-price-by-mileage table above for your band.
How many 2018 Audi S4 are for sale right now?
77 in total, nearly all pre-owned. Counts refresh daily from live dealer inventory.
How we calculate these prices
We track 77 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.
Want the original factory equipment and MSRP behind a specific car? Look up the original Monroney sticker for a 2018 Audi →
Shopping for this car?
Check individual VINs before you buy — decode the exact trim and mileage, see every active listing, and how each price compares to the local market.