1973 Triumph GT6 Mk III Market Value & Price History
The 1973 Triumph GT6 Mk III has a current market value of $16,340 as of Oct 9, 2026, based on 10 verified auction sales tracked by DriveIndex, with half of the verified USD sales since 2020 between $12,500 and $21,000. Based on US sales through Sep 10, 2026. 2 have sold in the past 12 months.
Data: DriveIndex. 10 verified auction sales for the 1973 Triumph GT6 Mk III, latest sale Sep 10, 2026. Value as of Oct 9, 2026. Methodology
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| Sold | Price | Mileage | Gearbox |
|---|---|---|---|
| Sep 10, 2026 | $16,500 | 62,000 mi | — |
| Aug 15, 2026 | $17,000 | 75,000 mi | — |
| Sep 24, 2025 | $11,250 | 46,000 mi | — |
| Aug 1, 2025 | $12,750 | 9,000 mi | Manual |
| Dec 11, 2024 | $37,000 | 78,000 mi | — |
| Jul 17, 2024 | $12,000 | 75,000 mi | — |
| Jun 18, 2022 | $20,000 | 96,000 mi | Manual |
| Dec 9, 2021 | $31,751 | 10,000 mi | Manual |
| Aug 30, 2021 | $12,500 | 56,000 mi | Manual |
| Nov 3, 2020 | $21,000 | 85,000 mi | Manual |
Verified results from the world's leading collector-car auction houses and marketplaces.
All Triumph GT6 Mk III auction results →See the full picture on the 1973 Triumph GT6 Mk III
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Triumph GT6 Mk III by Year
1973 Triumph GT6 Mk III: Frequently Asked Questions
How much is a 1973 Triumph GT6 Mk III worth?
A 1973 Triumph GT6 Mk III is worth approximately $16,340 as of Oct 9, 2026, based on 10 verified auction sales tracked by DriveIndex. Based on US sales through Sep 10, 2026. Half of all verified sales fall between $12,500 and $21,000; the full verified range is $11,250 to $37,000. Condition, mileage and options move an individual car within that band.
How many 1973 Triumph GT6 Mk III sell per year?
2 have sold at auction in the past 12 months. DriveIndex has tracked 10 1973 Triumph GT6 Mk III sales in total.
Are 1973 Triumph GT6 Mk III sale prices higher or lower than a year ago?
There aren't yet enough recent sales to compute a reliable 12-month price direction for the 1973 Triumph GT6 Mk III. 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 1973 Triumph GT6 Mk III?
DriveIndex tracks for-sale listings and auction results for the 1973 Triumph GT6 Mk III from the world's leading collector-car auction houses and marketplaces.
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