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...
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