Are the problems at Mercedes over? 'We're not worried about that'

Mercedes has been busy changing engines lately. Lewis Hamilton already got a new engine in Turkey and Valtteri Bottas followed with a grid penalty in Austin. Toto Wolff has admitted that they are dealing with reliability issues, but they don't expect any new problems during the last five races.

It seemed that the reliability problems were only going to get worse, as the tracks in Mexico and Brazil are at a higher altitude. The MGU-H and turbo have to work harder than usual. Yet there seems to be little fear at Mercedes, Aston Martin and Williams. Dave Robson, head of vehicle performance at Williams, doesn't expect any new or additional problems.

"At the moment we are not worried about that. The altitude shouldn't cause any problems in terms of reliability, in principle it should be possible. Certainly at this stage we can't worry about that," the Brit told Motorsport.com.

Williams won't be waiting for problems either, as they are currently eighth in the Constructors' Championship. Alfa Romeo are sixteen points behind them and so Williams will be keen to maintain their strong position.