As of September 2026, CarSearch.Pro's True Value model estimates a typical Ford Mustang (S550) GT500 is actually worth $45,300 (fair range $39,900 to $50,700). Unlike the median asking price shown above, True Value is anchored to 520 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 $28,500 — about 37% below what these cars have actually been selling for. Asks sitting below recent sold values can signal softening demand or motivated sellers.
As of September 2026, the Ford Mustang (S550) GT500 market has 1,000 active listings across 14 marketplaces tracked by CarSearch.Pro. The median asking price is $11,000, with the middle 50% of listings priced between $7,800 and $12,900. GT500 prices have increased 1.6% over the past quarter, from a median sale price of $29,900 to $30,373.
The typical GT500 on the market has 117,428 miles. Listings spend an average of 2 days on market before selling or being removed.
Current GT500 Pricing
A fair price for a Ford Mustang (S550) GT500 in September 2026 is between $7,800 and $12,900 (25th to 75th percentile). Prices range from $3,000 to $13,300 across 1,000 active listings.
Price Distribution (1,000 Active Listings)
Percentile
Price
Meaning
10th
$3,000
Budget / project cars
25th
$7,800
Below average price
Median (50th)
$11,000
Typical market price
75th
$12,900
Above average / premium
90th
$13,300
Top tier / low miles / rare spec
The average asking price is $9,794, 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
7
$3,500
10,000 - 25,000 mi
14
$4,500
25,000 - 50,000 mi
60
$3,500
50,000 - 100,000 mi
248
$10,000
100,000 - 150,000 mi
499
$12,000
Over 150,000 mi
146
$10,249
GT500 Price Trends
Ford Mustang (S550) GT500 prices have increased 1.6% over the past quarter. In 2026-Q3, the median sale price was $30,373 across 978 sales, up from $29,900 in 2026-Q2.
Best Value GT500 by Model Year
The 2023 GT500 offers the best value with a median price of $2,500 across 8 listings. The most expensive model year is 2018 at a median of $11,995.
Median Price by Model Year
Year
Listings
Median Price
Min
Max
2015
252
$11,072
$2,500
$13,774
2016
243
$11,899
$2,500
$13,753
2017
146
$11,988
$2,500
$13,750
2018
85
$11,995
$2,500
$13,774
2019
87
$10,450
$2,500
$13,700
2020
86
$6,900
$2,500
$13,500
2021
36
$7,730
$2,500
$13,698
2022
16
$5,000
$2,500
$12,900
2023
8
$2,500
$2,500
$6,900
2024
41
$3,500
$2,500
$10,500
How Mileage Affects GT500 Value
Most price guides assume value falls linearly with mileage. It doesn't. CarSearch.Pro learns the actual price-vs-mileage curve for the Ford Mustang (S550) GT500 from confirmed sales, referenced to a typical example at about 6,000 miles:
Odometer (approx.)
Value Multiplier
Implied Value
346 mi
1.42x
$64,146
4,637 mi
1.06x
$47,854
10,921 mi
0.89x
$40,403
20,313 mi
0.76x
$34,253
38,301 mi
0.58x
$26,185
61,124 mi
0.47x
$21,248
94,427 mi
0.41x
$18,402
129,304 mi
0.37x
$16,657
300,000 mi
0.33x
$14,956
Low-mileage examples carry a real premium in this market: around 346 miles, cars trade at roughly 1.42x the reference value. At the other end, 300,000-mile examples trade at about 0.33x. Implied values here are anchored to this market's True Value.
GT500 Price Forecast
Horizon
Direction
Probability
Regime
Past Accuracy
6 months
↑ UP
50%
volatile
53% over 76 tests
12 months
↑ UP
51%
volatile
41% over 70 tests
24 months
↑ UP
52%
volatile
33% over 58 tests
These are probabilistic direction calls, not price targets. The "Past Accuracy" column is this model's real walk-forward record on the Ford Mustang (S550) GT500 — 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 GT500
The highest concentration of Ford Mustang (S550) GT500 listings is in TX with 174 active listings, followed by FL (169), CA (133), GA (112), AZ (71).
Regional pricing varies significantly. The lowest median price is in TX at $9,800, while NC has the highest at $12,896. Buyers willing to travel or arrange transport may find savings of $3,096.
Top States by Inventory
State
Listings
Median Price
TX
174
$9,800
FL
169
$11,990
CA
133
$10,000
GA
112
$11,500
AZ
71
$10,500
NJ
39
$11,000
WA
34
$11,999
VA
32
$12,499
NC
28
$12,896
IL
22
$11,900
GT500 Market Velocity
Ford Mustang (S550) GT500 listings spend an average of 2 days on market. This is a fast-moving market. Buyers should expect competitive pricing and be prepared to act quickly on well-priced examples. Sellers can generally expect strong demand.
The median time on market is 2 days.
GT500 Buyer's Guide Summary
Fair price range: $7,800 to $12,900. The median is $11,000. Anything below $7,800 is a strong value; above $12,900 should be premium condition, low miles, or a desirable specification.
Prices stable: GT500 values have been relatively flat. There is no urgency to time the market.
Best value year: The 2023 model year has the lowest median price at $2,500, making it the most accessible entry point into GT500 ownership.
Act fast: With an average of 2 days on market, good examples sell quickly. Have financing arranged and be ready to move on a listing within days.
Data sourced from 13 marketplaces including eBay Motors, Bring a Trailer, Cars & Bids,
AutoTrader, CarGurus, Cars.com, Facebook Marketplace, Classic.com, and Hagerty Marketplace.
Updated daily by CarSearch.Pro's automated pipeline.
Browse all 1,000 active GT500 listings.
Read the latest GT500 market analysis.