SUSIE WOLFF retired from motor racing yesterday, claiming the sport is not ready for women to compete.

Wolff became the first female driver to compete in a Formula One race weekend in over two decades last year, test driving for Williams at the British Grand Prix, the Spanish and the German.

But her hopes of becoming the first woman to start a race since Italian Lella Lombardi in 1976 were dashed when Adrian Sutil joined Williams following Valteerri Bottas’s injury in March.