AUSTIN -- Toro Rosso driver Brendon Hartley will receive a grid penalty on his Formula One debut after his team changed his car's power unit ahead of the race.
Hartley was drafted in by Toro Rosso to replace Pierre Gasly, who is racing in the Japanese Super Formula series this weekend, and made his F1 debut during Friday practice in Austin. However, a new engine, MGU-H, hybrid battery and control electronics were fitted to his car ahead of the opening session, meaning he will take a 25-place drop on Sunday's grid.
Renault's Nico Hulkenberg will also be shuffled down the order after his team fitted a new turbocharger, MGU-H and MGU-K, dropping him 20 places on the grid.