As of October 2026, CarSearch.Pro's True Value model estimates a typical Audi S4 (B8) is actually worth $17,300 (fair range $15,200 to $19,300). Unlike the median asking price shown above, True Value is anchored to 74 recent confirmed sales, normalized for mileage, and blends auction hammer prices (grossed up for buyer's premium) with real-world asking behavior.
Sellers are currently asking a median of $15,000 — about 13% below what these cars have actually been selling for. Asks sitting below recent sold values can signal softening demand or motivated sellers.
As of October 2026, the Audi S4 (B8) market has 571 active listings across 14 marketplaces tracked by CarSearch.Pro. The median asking price is $14,998, with the middle 50% of listings priced between $11,900 and $17,998. Audi S4 (B8) prices have increased 21.3% over the past quarter, from a median sale price of $14,000 to $16,980.
The typical Audi S4 (B8) on the market has 111,373 miles. Listings spend an average of 67 days on market before selling or being removed.
Current Audi S4 (B8) Pricing
A fair price for a Audi S4 (B8) in October 2026 is between $11,900 and $17,998 (25th to 75th percentile). Prices range from $8,440 to $22,389 across 571 active listings.
Price Distribution (571 Active Listings)
Percentile
Price
Meaning
10th
$8,440
Budget / project cars
25th
$11,900
Below average price
Median (50th)
$14,998
Typical market price
75th
$17,998
Above average / premium
90th
$22,389
Top tier / low miles / rare spec
The average asking price is $15,108, which is higher than the median, indicating that high-priced outliers (rare specifications, very low mileage, or concours-quality examples) pull the average up.
Price by Mileage
Mileage Range
Listings
Median Price
25,000 - 50,000 mi
11
$24,500
50,000 - 100,000 mi
193
$19,080
100,000 - 150,000 mi
293
$13,995
Over 150,000 mi
67
$8,995
Audi S4 (B8) Price Trends
Audi S4 (B8) prices have increased 21.3% over the past quarter. In 2026-Q3, the median sale price was $16,980 across 34 sales, up from $14,000 in 2026-Q2.
On a year-over-year basis, Audi S4 (B8) prices are up 6.1% ($16,980 vs. $16,000 a year ago).
Audi S4 (B8) Quarterly Sale Prices (Historical)
Quarter
Sales
Median Price
Average Price
2024-Q4
16
$21,500
$20,388
2025-Q1
17
$17,850
$18,173
2025-Q2
22
$16,950
$17,648
2025-Q3
18
$16,000
$15,707
2025-Q4
22
$15,561
$15,240
2026-Q1
10
$14,722
$14,303
2026-Q2
25
$14,000
$15,530
2026-Q3
34
$16,980
$17,566
Best Value Audi S4 (B8) by Model Year
The 2009 Audi S4 (B8) offers the best value with a median price of $9,990 across 5 listings. The most expensive model year is 2016 at a median of $19,797.
Median Price by Model Year
Year
Listings
Median Price
Min
Max
2009
5
$9,990
$4,000
$10,289
2010
46
$11,000
$4,500
$25,000
2011
57
$11,500
$4,500
$60,860
2012
57
$12,999
$3,500
$24,500
2013
108
$13,995
$2,800
$25,000
2014
141
$15,501
$5,000
$33,977
2015
91
$16,500
$4,378
$35,999
2016
66
$19,797
$10,500
$31,998
How Mileage Affects Audi S4 (B8) Value
Most price guides assume value falls linearly with mileage. It doesn't. CarSearch.Pro learns the actual price-vs-mileage curve for the Audi S4 (B8) from confirmed sales, referenced to a typical example at about 88,600 miles:
Odometer (approx.)
Value Multiplier
Implied Value
1,118 mi
1.45x
$25,042
4,300 mi
1.31x
$22,650
10,100 mi
1.23x
$21,247
22,967 mi
1.30x
$22,515
41,247 mi
1.31x
$22,695
65,024 mi
1.18x
$20,459
97,705 mi
0.90x
$15,508
140,944 mi
0.66x
$11,403
300,000 mi
0.57x
$9,915
Low-mileage examples carry a real premium in this market: around 1,118 miles, cars trade at roughly 1.45x the reference value. At the other end, 300,000-mile examples trade at about 0.57x. Implied values here are anchored to this market's True Value.
Audi S4 (B8) Price Forecast
Horizon
Direction
Probability
Regime
Past Accuracy
6 months
↑ UP
48%
volatile
61% over 49 tests
12 months
↑ UP
49%
volatile
44% over 43 tests
24 months
↑ UP
50%
volatile
61% over 31 tests
These are probabilistic direction calls, not price targets. The "Past Accuracy" column is this model's real walk-forward record on the Audi S4 (B8) — every month we re-run the forecast as if we only knew what was knowable then, and grade it against what actually happened. We publish the hit rate either way. Full methodology & track record →
Where to Buy a Audi S4 (B8)
The highest concentration of Audi S4 (B8) listings is in WA with 50 active listings, followed by CA (46), NJ (44), CO (40), MA (34).
Regional pricing varies significantly. The lowest median price is in MI at $11,995, while NJ has the highest at $16,988. Buyers willing to travel or arrange transport may find savings of $4,993.
Top States by Inventory
State
Listings
Median Price
WA
50
$13,999
CA
46
$15,300
NJ
44
$16,988
CO
40
$16,900
MA
34
$14,998
GA
33
$13,000
NY
28
$15,000
MI
27
$11,995
IL
27
$15,500
VA
24
$14,494
Audi S4 (B8) Market Velocity
Audi S4 (B8) listings spend an average of 67 days on market. This is a slower market. Buyers have negotiating leverage, especially on listings that have been active for 60+ days. Sellers should consider competitive pricing from the start.
The median time on market is 41 days. The lower median suggests most cars sell relatively quickly, while a smaller number of overpriced listings drag up the average.
Audi S4 (B8) Buyer's Guide Summary
Fair price range: $11,900 to $17,998. The median is $14,998. Anything below $11,900 is a strong value; above $17,998 should be premium condition, low miles, or a desirable specification.
Trending up: Audi S4 (B8) prices have risen 21.3% recently. Buying sooner may save money if the trend continues.
Best value year: The 2009 model year has the lowest median price at $9,990, making it the most accessible entry point into Audi S4 (B8) ownership.
Negotiate: With an average of 67 days on market, sellers are often willing to negotiate. Listings over 60 days old are especially open to offers.