The decision by Formula 1's Strategy Group to not allow fifth engines this season means Red Bull and Toro Rosso are now on the verge of grid penalties. Last year, teams were allowed five power units for the season, which meant that penalties did not kick in until very late in the year when sixth elements were taken. However, this year, in addition to the number of engines allowed dropping to four, reliability has been especially poor for some teams. In particular the Renault-powered Red Bull duo of Daniel Ricciardo and Daniil Kvyat have already taken their fourth power unit, and so has Toro Rosso's Max Verstappen. Things are not much better at McLaren either, with Jenson Button and Fernando...
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