Market Report
Triumph Stag Value Estimator
An interactive estimator, not a valuation. Pick condition, year, transmission, mileage and region, the tool combines the 2026 UK bands with disclosed modifiers. It does not show individual sales, auction dates, lots or any price history.
Indicative 2026 range
£15,000 – £22,000
Base band: Good usable driver (£15,000 to £22,000). Engine and other modifiers are listed below. Rounded to the nearest £250. Individual cars can and do fall outside this range.
How your selections change the range
| Factor | Selected | Modifier | Reason |
|---|---|---|---|
| Engine | Original Triumph V8 | ×1.00 | No engine adjustment applied. |
| Year / Mk | Any year (1970–1977) | ×1.00 | No year adjustment applied. |
| Transmission | Any | ×1.00 | No transmission adjustment applied. |
| Mileage | Not specified | ×1.00 | No mileage adjustment applied. |
| Region | United Kingdom | ×1.00 | Reference market; bands are UK-native. |
What this estimator is: and isn't
- It's an estimator: base bands from the Market Report adjusted by disclosed multipliers. Every modifier above is visible.
- It isn't a valuation. A single major issue, rotten sills, a snapped timing chain, a missing hard top, moves a car a full band regardless of the estimate.
- Provenance dominates. Documented history, both roofs, both keys and a matching-numbers Triumph V8 sit above the estimator; missing paperwork sits below.
- For a formal figure, use a specialist classic insurer's agreed-value scheme, see Insuring a Triumph Stag.
See also: Market Report, Buying Guide, and Production & survival data.