Ricciardo, Hartley to join Mexico penalty list.
Daniel Ricciardo is set to drop to 16th place on the grid after Red Bull elected to fit new power unit components to his RB13 ahead of the Mexican Grand Prix.
Ricciardo put in a subdued display during qualifying at the Autódromo Hermanos Rodríguez, setting only the seventh-best time, and Red Bull has duly installed fresh elements.
Ricciardo has taken on a seventh MGU-H, sixth Internal Combustion Engine and sixth Turbocharger, meaning he will be handed a 20-place penalty.