As of August 2026, CarSearch.Pro's True Value model estimates a typical Audi S4 (B8) is actually worth $15,400 (fair range $13,600 to $17,300). Unlike the median asking price shown above, True Value is anchored to 66 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 3% below what these cars have actually been selling for.
As of August 2026, the Audi S4 (B8) market has 744 active listings across 14 marketplaces tracked by CarSearch.Pro. The median asking price is $14,950, with the middle 50% of listings priced between $10,995 and $18,094. Audi S4 (B8) prices have decreased 5.0% over the past quarter, from a median sale price of $14,000 to $13,300.
The typical Audi S4 (B8) on the market has 111,000 miles. Listings spend an average of 63 days on market before selling or being removed.
Current Audi S4 (B8) Pricing
A fair price for a Audi S4 (B8) in August 2026 is between $10,995 and $18,094 (25th to 75th percentile). Prices range from $7,810 to $21,887 across 744 active listings.
Price Distribution (744 Active Listings)
Percentile
Price
Meaning
10th
$7,810
Budget / project cars
25th
$10,995
Below average price
Median (50th)
$14,950
Typical market price
75th
$18,094
Above average / premium
90th
$21,887
Top tier / low miles / rare spec
The average asking price is $14,868, which is lower than the median, suggesting pricing is relatively symmetrical across the market.
Price by Mileage
Mileage Range
Listings
Median Price
Under 10,000 mi
2
$20,000
10,000 - 25,000 mi
2
$16,995
25,000 - 50,000 mi
11
$19,490
50,000 - 100,000 mi
277
$18,950
100,000 - 150,000 mi
358
$13,750
Over 150,000 mi
76
$8,995
Audi S4 (B8) Price Trends
Audi S4 (B8) prices have decreased 5.0% over the past quarter. In 2026-Q3, the median sale price was $13,300 across 3 sales, down from $14,000 in 2026-Q2.
On a year-over-year basis, Audi S4 (B8) prices are down 16.9% ($13,300 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
3
$13,300
$13,400
Best Value Audi S4 (B8) by Model Year
The 2010 Audi S4 (B8) offers the best value with a median price of $10,000 across 58 listings. The most expensive model year is 2016 at a median of $19,000.
Median Price by Model Year
Year
Listings
Median Price
Min
Max
2009
10
$11,990
$2,800
$17,000
2010
58
$10,000
$2,800
$26,350
2011
83
$10,495
$2,700
$20,000
2012
100
$11,870
$2,500
$19,995
2013
152
$14,500
$3,000
$29,977
2014
157
$16,296
$6,000
$33,977
2015
129
$17,000
$4,378
$26,250
2016
55
$19,000
$2,500
$29,999
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 91,000 miles:
Odometer (approx.)
Value Multiplier
Implied Value
1,118 mi
1.46x
$22,468
4,300 mi
1.32x
$20,285
10,607 mi
1.11x
$17,062
22,967 mi
1.31x
$20,159
40,807 mi
1.34x
$20,576
64,043 mi
1.19x
$18,359
98,466 mi
0.91x
$14,038
139,107 mi
0.67x
$10,268
300,000 mi
0.58x
$8,944
Low-mileage examples carry a real premium in this market: around 1,118 miles, cars trade at roughly 1.46x the reference value. At the other end, 300,000-mile examples trade at about 0.58x. 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
47%
volatile
62% over 47 tests
12 months
↓ DOWN
52%
volatile
54% over 41 tests
24 months
↓ DOWN
52%
volatile
48% over 29 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 73 active listings, followed by CA (63), CO (51), NJ (46), TX (41).
Regional pricing varies significantly. The lowest median price is in FL at $10,945, while MN has the highest at $27,777. Buyers willing to travel or arrange transport may find savings of $16,832.
Top States by Inventory
State
Listings
Median Price
WA
73
$15,500
CA
63
$12,115
CO
51
$18,900
NJ
46
$16,299
TX
41
$11,995
VA
41
$16,996
IL
33
$11,900
AZ
30
$16,500
CT
28
$15,997
MA
27
$15,999
Audi S4 (B8) Market Velocity
Audi S4 (B8) listings spend an average of 63 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 30 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: $10,995 to $18,094. The median is $14,950. Anything below $10,995 is a strong value; above $18,094 should be premium condition, low miles, or a desirable specification.
Trending down: Audi S4 (B8) prices have dropped 5.0% recently. Patient buyers may benefit from waiting, but desirable examples still sell quickly.
Best value year: The 2010 model year has the lowest median price at $10,000, making it the most accessible entry point into Audi S4 (B8) ownership.
Negotiate: With an average of 63 days on market, sellers are often willing to negotiate. Listings over 60 days old are especially open to offers.