EXTRA POWER AT A PRICE: Red Bull and Toro Rosso will have upgraded engines at their disposal for the US GP in Texas, but engine-supplier Renault warned the teams will face grid penalties if they use the units. Image: AP/Manu Fernandez
Austin, Texas - Renault will be taking an upgraded, more powerful engine to Austin for this weekend's (October 24-25) US Formula 1 Grand Prix but Red Bull and Toro Rosso will have to accept grid penalties if they want to use it.
Renault's director of operations Remi Taffin said:"We will have our new specification of power unit available to use in Austin. The principal changes involve the internals of the ICE (internal combustion engine) to give improved power and efficiency.
Aware of incurring grid penalty
"We know that introducing the new PU (power unit) will incur a grid penalty (for exceeding the season's allocation) so the decision to use will be made in full consultation with the teams."
With four races remaining, and Mercedes already crowned champions, both Renault-powered teams still have points and championship position to fight for.
Red Bull is fourth and 71 points behind third-placed Williams and 57 ahead of Force India.
Toro Rosso is seventh and only 21 points behind Lotus, who will become the Renault works team in 2016 if a takeover goes through.
Sauber, celebrating their 400th race this weekend, is 11 points behind Toro Rosso.
Toro Rosso driver Max Verstappen had some on a mechanical bull in Texas on Wednesday (October 21).
Watch the clip posted on Toro Rosso's Twitter timeline: