AC Six History

The AC Six introduced John Weller's overhead-camshaft 1,991 cc straight-six in 1920, an aluminium-block design that was years ahead of contemporary British practice. The engine's longevity is remarkable: progressively developed versions of it remained in production into the early 1960s, eventually finding their way into the Ace sports car.

Through the 1920s and 1930s, under various names (16/56, 16/66, 16/70), AC built sporting tourers, saloons and two-seaters that delivered genuine performance for their era. A company car won the 1926 Monte Carlo Rally — the first British car to win the event outright — establishing the marque's competition credentials before the Second World War halted production.