The FIA has confirmed that Ferrari has used an engine token ahead of the Austrian Grand Prix, as revealed by yesterday.

With Ferrari pushing hard to make the step it needs to properly challenge Mercedes, it elected to unleash a power unit update for the Red Bull Ring.

In a note sent to teams on Friday morning, the FIA stated that Ferrari had spent one of its remaining development tokens.

It is understood that Ferrari has changed its MGU-K design to help improve its energy recovery, which could be very valuable around the Austrian track.

Furthermore, fuel supplier Shell has introduced some new updates for this weekend that should deliver a horsepower boost.

Ferrari's spending of the token means it has spent the most out of all of the manufacturers, and has only three tokens remaining for the rest of the campaign.

Renault has spent the fewest tokens and has 21 remaining – with Red Bull claiming that the French car manufacturer was planning its next update at the Japanese Grand Prix.

Token spend so far

Ferrari 29 (3 remaining)
Honda 20 (12 remaining)
Mercedes 21 (11 remaining)
Renault 11 (21 remaining)

Gallery: FIA confirms engine token usage by Ferrari