Renault have warned # ##ports that they will resolve power - unit problems . Red Bull owner mark Mateschitz threatened to pull out of negotiations . Daniil Kvyat 's Red Bull and van Verstappen ' Toro Rosso both suffered a power - unit failure at Chinese Grand Prix in Shanghai .
Renault have promised Red Bull that they will resolve power-unit problems . Red Bull owner Dietrich Mateschitz threatened to pull out of F1 . Daniil Kvyat 's Red Bull and Max Verstappen ' Toro Rosso both suffered a power-unit failure at Chinese Grand Prix in Shanghai .