Three-times Formula One champion Niki Lauda, regarded as one of the finest racers of all time, has died at 70 after battling declining health.
Austrian Lauda, who was hospitalised in January for about 10 days while suffering from influenza and had a lung transplant last August, died on Monday, his family said in a statement released early on Tuesday.
"His unique achievements as an athlete and entrepreneur are and will remain unforgettable," the statement, published by Austrian media, said.
"His tireless zest for action, his straightforwardness and his courage remain a role model and a benchmark for all of us, he was a loving and caring husband, father and grandfather away from the public, and he will be missed."
Lauda won two world championships in 1975 and 1977 with Ferrari and a third in 1984 with McLaren.