The Triumph Stag: Britain’s Beautiful V8 Disaster

Rivets & Redlines

Rivets & Redlines

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The Triumph Stag was supposed to be Britain’s answer to the Mercedes-Benz SL—a beautiful open-top grand tourer powered by its own sophisticated 3.0-litre V8.

Instead, overheating, timing-chain failures, damaged cylinder heads and British Leyland’s worsening quality problems created one of the most notorious reliability stories in automotive history.

This documentary explores Giovanni Michelotti’s elegant design, Triumph’s ambitious V8, why the proven Rover V8 was rejected, the catastrophic failures that followed and how specialists eventually transformed the Stag into the dependable classic it was always meant to be.

Was the Triumph Stag genuinely badly engineered, or did poor manufacturing and maintenance destroy a fundamentally good design?

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