2018 Audi S5 prices in the U.S.
The median pre-owned asking price for a 2018 Audi S5 in the U.S. is $24,428 based on 186 pre-owned listings (of 188 total).
As of September 9, 2026, the median asking price for a used 2018 Audi S5 in the U.S. is $24,428, based on 186 active dealer listings tracked by VinAssessment.
◷ Updated September 9, 2026 ▤ 188 active dealer listings, refreshed daily ⛭ Generation: 2018–present
Typical: $21,735–$28,253 — the middle half of 188 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 S5
The $21,735–$28,253 typical range isn't randomness — two factors explain most of it:
Asking prices run about $31,998 at 30K–45K miles and fall to $18,748 over 105K miles — roughly $1,800 for every 10,000 miles.
The same car typically asks $22,999 in Michigan but $28,595 in Oregon.
Find your mileage and trim in the configurator below.
Configure the exact car
Modelled from 188 real asking prices, adjusted for mileage and location. Not a formal appraisal.
What would a 2018 Audi S5 cost per month?
Estimate the monthly payment on a $24,471 vehicle. Move the numbers to match your own loan.
Estimate only. Excludes tax, title, registration and dealer fees, and assumes a fixed-rate loan with equal monthly payments. Your actual rate depends on your credit and lender.
2018 Audi S5: a fair price for your mileage
A 2018 Audi S5 sheds roughly $1,800 for every 10,000 miles. Find your mileage below.
| Mileage ⓘ | Based on ⓘ | Fair price ⓘ | Typical range ⓘ |
|---|---|---|---|
| 30K–45K miles | 13 listings | $31,998 | $31K–$35K |
| 45K–60K miles | 28 listings | $29,576 | $28K–$31K |
| 60K–75K miles | 34 listings | $26,997 | $26K–$28K |
| 75K–90K miles | 45 listings | $24,090 | $23K–$25K |
| 90K–105K miles | 36 listings | $21,422 | $20K–$23K |
| Over 105K miles | 28 listings | $18,748 | $17K–$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.
Live 2018 Audi S5 listings, priced by VIN
Every VIN links to a full market report: decode, active listings and the local price band. Shop 2017–2019 Audi S5 listings on VehiSales →.
Price history
Median asking price by month · shaded band is the typical range (25th–75th percentile)
The median listing price for a 2018 Audi S5 is $25,494 (September 2026) — down 10.5% from $28,490 in September 2025.
Monthly price table
| Month | Median price | Typical range | Vehicles listed |
|---|---|---|---|
| September 2026 | $25,494 | $22K–$30K | 120 |
| August 2026 | $25,599 | $22K–$29K | 239 |
| July 2026 | $25,995 | $23K–$29K | 281 |
| June 2026 | $25,068 | $22K–$29K | 249 |
| May 2026 | $25,485 | $22K–$29K | 240 |
| April 2026 | $25,992 | $23K–$29K | 194 |
| March 2026 | $25,472 | $23K–$28K | 244 |
| February 2026 | $25,491 | $22K–$28K | 227 |
| January 2026 | $24,988 | $22K–$28K | 237 |
| December 2025 | $24,999 | $22K–$28K | 221 |
| November 2025 | $26,993 | $23K–$30K | 128 |
| October 2025 | $27,800 | $24K–$31K | 95 |
| September 2025 | $28,490 | $25K–$31K | 69 |
2018 Audi S5 prices by state
Listed this year counts every 2018 Audi S5 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.
Factory configurations of the 2018 Audi S5
8 factory configurations left the plant as a 2018 Audi S5 — the most common are below, each decoded into its own build sheet from the VIN pattern.
- Quattro Prestige, Quattro Technik (Canada) 3L 6cyl AWD $26,988
- Quattro Premium Plus, Quattro Progressiv (Canada) 3L 6cyl AWD 40 built
- Quattro Prestige, Quattro Technik (Canada) 3L 6cyl AWD $25,995
- Quattro Prestige 3L 6cyl AWD $27,971
- Quattro Prestige, Quattro Technik (Canada) 3L 6cyl AWD $23,984
- Quattro Premium Plus, Quattro Progressiv (Canada) 3L 6cyl AWD $23,905
- Quattro Premium Plus 3L 6cyl AWD $23,768
- Quattro Premium Plus, Quattro Progressiv (Canada) 3L 6cyl AWD $23,999
Keep exploring S5 prices
2018 Audi S5 · $24,471 typical · 188 listingsOther Audi S5 years
More 2018 Audi prices
Own a 2018 Audi S5? See what it's worth →
Frequently asked questions
Why do 2018 Audi S5 prices range from $16,698 to $36,152?
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 $21,735 and $28,253 — see the mileage and trim breakdowns above for where a specific vehicle lands.
How much should mileage change the price of a 2018 Audi S5?
Expect roughly $1,800 less for every 10,000 miles on the odometer. A 60K-mile example should cost about $5,400 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 S5 are for sale right now?
188 in total, nearly all pre-owned. Counts refresh daily from live dealer inventory.
How we calculate these prices
We track 188 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 reduce the influence of extreme values. This does not verify title status or guarantee that every erroneous listing is excluded. 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? See the factory window sticker for this S5 →
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.