• Mercedes say their F1 gearbox sensor issues are 'complex'
    LONDON, July 9 (Reuters): Mercedes knew they had gearbox sensor issues before last Sunday's season-opening Austrian Grand Prix and are working around the clock to fix the "complex problem" before this weekend's next race, strategy director James Vowles said.   Valtteri Bottas won the race at the Red Bull Ring for Mercedes but he and his team mate Lewis Hamilton, the six-times Formula One world champion, were told to avoid the kerbs due to the risk of v