Red Bull to use new Renault engine in Brazil
Renault has confirmed that Red Bull will use its new Formula 1 engine at the Brazilian Grand Prix.
The French car manufacturer used 11 of the 12 development tokens available to it to work on improvements that were first made available at the United States Grand Prix.
However, following meetings with Red Bull, it was decided not to introduce it in Austin.
That was because the two tenths-per-lap gain that the improvements delivered was not thought to be worth taking a 10-place grid penalty for at a track they believed it would be competitive at.
Furthermore, it was not used in Mexico last weekend either because of the unique demands that the high altitude placed on power units.
But, as originally agreed last month, Renault and Red Bull have will introduce the engine at Interlagos next weekend.
It is unclear at this stage, however, whether both Daniel Ricciardo and Daniil Kvyat will use it or just one of them.
Red Bull and Renault will make a final decision on that next week once they have completed a full analysis of the life cycle of their current power units.
Renault's other team Toro Rosso has already decided not to use the new Renault engine this season.
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