The FIA list the power unit usage on the Thursday before each Grand Prix. There are now a number of drivers who have used four components from their allocated five for the season, so we are starting to get close to the time when penalties will be applied. The current usage list as published on 19 June 2014 is. Here are the latest statistics concerning use ahead of the Austrian Grand Prix.
ICE – Internal Combustion Engine
TC – Turbo Charger MGU-K – Motor Generator Energy-Kinetic MGU-H – Motor Generator Energy-Heat ES – Energy Store CE – Control Electronics