Toro Rosso Formula 1 rookie Brendon Hartley is set to make his first grand prix start in Austin from the back of the grid after taking power unit penalties.
Team principal Franz Tost confirmed to Motorsport.com that the New Zealander will take a complete new power unit this weekend.
The decision was made before it was confirmed that F1 newcomer Hartley would drive the car that was piloted by the absent Pierre Gasly in the last two races.
Tost added that the sister entry (currently driven by Daniil Kvyat) will take new power unit elements in Mexico next weekend, with both cars simply running out of engine mileage with which to finish the season.
Although the exact size of the grid penalty has yet to be confirmed, a complete change for Hartley should be worth 30 places, as he will be on the car’s sixth V6, turbo and MGU-H, and fifth energy store and control electronics. His use of a fourth MGU-K does not earn a penalty.
Sources have indicated that Red Bull’s Max Verstappen is also set to take power unit penalties this weekend.
Asked on Thursday the Dutchman would only say: “We’ll find out tomorrow, I’m not sure whether it’s going to happen here, or in the next races. You’ll hear it tomorrow.”