Tom Cruise feared Olga Kurylenko would kill them both on the set of Oblivion when she lost her nerve during a high-speed motorbike stunt.

The former Bond girl was riding pillion on the vehicle as Cruise revved it up to 70 miles-per-hour (120 kilometres-per-hour) during a daring chase with a helicopter for a scene in the new sci-fi adventure movie.

The Top Gun actor urged his terrified co-star to hold on tight to prevent a potentially deadly crash, but Kurylenko was so scared she let go - and Cruise feared they would both perish.

He tells U.K. talk show host Graham Norton, "We are on a motorbike with a helicopter chasing us and I say to her, 'No matter what happens, just hold on to me and I will get us out of trouble,' and she keeps saying, 'Don't go too fast, don't go too fast!'

"Of course we are going really fast, we hit a jump and we go up in the air, her hands come off and she is pushing me down and now I am terrified as we are going 70 miles-an-hour and I am shouting at her, 'You are not helping, you are going to kill us!'"