17. Jaguar XK Inline-6
The Jaguar XK inline-6 engine is a pillar of British motoring history, powering sports cars and sedans from 1949 through 1992—including the iconic E-Type.
Renowned for its silky smoothness and legendary reliability, the XK engine set a benchmark for performance and engineering excellence.
Its long production run and success on both road and track made it a defining element of Jaguar’s golden era.
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