Several Formula 1 drivers have edged closer to an engine-related grid penalty, after new components were fitted at the Austrian Grand Prix.
Each driver is permitted four versions of the six power unit elements across the course of the 20-race season.
Should a fifth version of any element be used, a 10-place grid penalty is issued, followed by further five-place drops for the remaining parts being installed for a fifth time.
The process is repeated for a sixth version, and so on.
Ahead of the Austrian Grand Prix, all four Red Bull and Renault drivers have had their cars fitted with a fourth MGU-H, the final of their permitted allocation for the campaign.
Elsewhere, Haas duo Romain Grosjean and Kevin Magnussen have both received their fourth Turbochargers of the season.
They join Sebastian Vettel in being one step away from a sanction, with the title leader also having used up his allocation of Turbochargers for the year.
So far this season, only McLaren drivers have received engine-related grid penalties, with Stoffel Vandoorne (in Russia and Baku), Fernando Alonso (in Baku) and Jenson Button (in Monaco) all being demoted.
Alonso and Vandoorne are already onto their seventh version of some elements, having used the aforementioned number of MGU-Hs and Turbochargers.
