1966 Ford Mustang GT Fastback K-Code Market Value & Price History
The 1966 Ford Mustang GT Fastback K-Code has a current market value of $85,350 as of Oct 12, 2026, based on 16 verified auction sales tracked by DriveIndex, with half of the verified USD sales since 2010 between $63,800 and $101,200. Based on US sales through Jul 25, 2026. 4 have sold in the past 12 months. The median sale price is down 12.9% over the past 12 months versus one to three years ago.
Data: DriveIndex. 16 verified auction sales for the 1966 Ford Mustang GT Fastback K-Code, latest sale Jul 25, 2026. Value as of Oct 12, 2026. Methodology
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| Sold | Price | Mileage | Gearbox |
|---|---|---|---|
| Jul 25, 2026 | $63,800 | 28,852 mi | Manual |
| May 16, 2026 | $101,200 | 98,709 mi | Manual |
| Apr 24, 2026 | $108,000 | 60,000 mi | — |
| Jan 22, 2026 | $63,800 | — | — |
| Jan 17, 2025 | $137,500 | 50,419 mi | — |
| Jul 21, 2024 | $73,000 | 61,000 mi | Manual |
| Jan 12, 2024 | $77,000 | 3,440 mi | Automatic |
| Nov 30, 2023 | $112,500 | 40,000 mi | Manual |
| Jan 12, 2023 | $110,000 | — | Manual |
| Jan 15, 2021 | $89,100 | — | Manual |
| Jan 14, 2021 | $88,000 | — | Manual |
| Jul 17, 2020 | $73,700 | — | Manual |
| Jan 9, 2020 | $61,600 | — | Manual |
| Mar 15, 2019 | $55,000 | — | Automatic |
| May 20, 2017 | $82,500 | — | Manual |
Verified results from the world's leading collector-car auction houses and marketplaces.
All Ford Mustang GT Fastback K-Code auction results →See the full picture on the 1966 Ford Mustang GT Fastback K-Code
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Ford Mustang GT Fastback K-Code by Year
1966 Ford Mustang GT Fastback K-Code: Frequently Asked Questions
How much is a 1966 Ford Mustang GT Fastback K-Code worth?
A 1966 Ford Mustang GT Fastback K-Code is worth approximately $85,350 as of Oct 12, 2026, based on 16 verified auction sales tracked by DriveIndex. Based on US sales through Jul 25, 2026. Half of all verified sales fall between $63,800 and $101,200; the full verified range is $51,700 to $137,500. Condition, mileage and options move an individual car within that band.
How much did a 1966 Ford Mustang GT Fastback K-Code cost new?
The 1966 Ford Mustang GT Fastback K-Code carried an original MSRP of $2,753. Verified examples now trade around $85,350.
How much has the 1966 Ford Mustang GT Fastback K-Code depreciated?
It hasn't depreciated. The 1966 Ford Mustang GT Fastback K-Code is worth about 3000% more than its original MSRP of $2,753, with verified examples now trading around $85,350. That compares today's value with the sticker price, not adjusted for inflation.
How many 1966 Ford Mustang GT Fastback K-Code sell per year?
4 have sold at auction in the past 12 months. DriveIndex has tracked 16 1966 Ford Mustang GT Fastback K-Code sales in total.
Are 1966 Ford Mustang GT Fastback K-Code sale prices higher or lower than a year ago?
The median 1966 Ford Mustang GT Fastback K-Code sale price is down 12.9% over the past 12 months versus one to three years ago, based on verified auction sales. That figure tracks the median of what actually sold, so it moves with the mix of mileages and options that came to market as well as with the market itself. The full Value Signal classification (appreciating, stable, bottomed, or depreciating) and its 1–5 year projection are part of DriveIndex Pro.
Where can I buy a 1966 Ford Mustang GT Fastback K-Code?
DriveIndex tracks for-sale listings and auction results for the 1966 Ford Mustang GT Fastback K-Code from the world's leading collector-car auction houses and marketplaces.
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