Triumph Buyer's Guide
Triumph's auction market is a study in reputations outliving their facts. The Stag spent forty years as a cautionary tale about overheating; it now leads our records with eight sales at a median of £12,616, because the known fixes long ago became standard practice. Across 28 tracked sales, the marque covers everything from £2,020 projects to £21,094 collector cars.
The story, briefly
Standard-Triumph built its sporting name on the TR line from 1953: simple, rugged roadsters through TR6, then the wedge-shaped TR7. The Spitfire (1962) undercut the MG Midget on style, the 2.5-litre saloons and Stag (1970) reached upmarket, and the Dolomite Sprint of 1973 brought a 16-valve head a decade before the Germans made it fashionable. British Leyland closed the marque in 1984; the club scene never accepted the closure and supports these cars today as if production had merely paused.
Which Triumph, for what money
Stag money. Eight sales, £8,700 to £21,094, median £12,616. The gap between bottom and top is largely engine provenance: an original Triumph V8 with documented cooling-system work leads; converted cars trail.
TR money. Three TR6 sales in a tight £12,600 to £15,914 band, the consistency of a settled collector market. Two TR7s at £5,625 and £7,100 remain the affordable TR, with the convertible preferred.
Small-car money. Five Spitfires from £2,020 to £12,800, median £6,900, condition explaining the spread entirely. Two Vitesses (£2,700, £3,740) and two Dolomites (£6,600, £11,700, the upper one Sprint territory) round out a market where £5,000 still buys something genuinely good.
What goes wrong
The Stag V8's reputation rests on real but solved problems: timing chains on stretched service intervals, and cooling neglect warping the alloy heads. A history file showing chains and a rebuilt radiator removes most of the risk. Elsewhere: chassis and sill rot on Spitfires and TRs (both separate-chassis cars, so structure is inspectable and repairable), Lucas injection on the TR6 rewards a specialist's setup, and Dolomite Sprint head gaskets need the correct torque procedure. Parts supply through the club network and commercial specialists covers effectively everything.
Our view
The Stag is the buy the numbers support: grand-touring ability, a V8 soundtrack, and a median price still below its ability because the reputation discount has not fully unwound. Insist on the original engine and cooling history. For smaller budgets, a £6,900-median Spitfire is an honest, fixable, separate-chassis classic that a home mechanic can keep alive indefinitely.