The drivers entered into the 2015 Formula 1 World Championship have used the below listed number of power unit elements during this season so far (After 10 rounds of 19)

ICE: Internal Combustion Engine
TC: Turbo Charger
MGU-H: Motor Generator Unit - Heat
MGU)-K: Motor Generator Unit - Kinetic
ES: Energy Store
CE: Control Electronics

Mercedes Lewis Hamilton
ICE: 2, TC: 2, MGU-H: 2, MGU-K: 2, ES: 2, CE: 2 Nico Rosberg
ICE: 2, TC: 2, MGU-H: 2, MGU-K: 2, ES: 2, CE: 2

Red Bull-Renault Daniel Ricciardo
ICE: 5, TC: 3, MGU-H: 3, MGU-K: 3, ES: 2, CE: 2 Daniil Kvyat
ICE: 5, TC: 3, MGU-H: 2, MGU-K: 2, ES: 2, CE: 2

Williams-Mercedes Valtteri Bottas
ICE: 2, TC: 2, MGU-H: 2, MGU-K: 2, ES: 2, CE: 2 Felipe Massa
ICE: 2, TC: 2, MGU-H: 2, MGU-K: 2, ES: 2, CE: 2

Ferrari Sebastian Vettel
ICE: 3, TC: 3, MGU-H: 3, MGU-K: 2, ES: 2, CE: 3 Kimi Raikkonen
ICE: 3, TC: 3, MGU-H: 3, MGU-K: 2, ES: 3, CE: 3

McLaren-Honda Fernando Alonso
ICE: 6, TC: 6, MGU-H: 6, MGU-K: 5, ES: 4, CE: 5 Jenson Button
ICE: 6, TC: 7, MGU-H: 7, MGU-K: 6, ES: 3, CE: 4

Force India-Mercedes Nico Hulkenberg
ICE: 3, TC: 3, MGU-H: 3, MGU-K: 3, ES: 2, CE: 2 Sergio Perez
ICE: 2, TC: 2, MGU-H: 2, MGU-K: 2, ES: 2, CE: 2

STR-Renault Max Verstappen
ICE: 5, TC: 3, MGU-H: 3, MGU-K: 3, ES: 2, CE: 3 Carlos Sainz
ICE: 4, TC: 3, MGU-H: 3, MGU-K: 3, ES: 2, CE: 3

Lotus-Mercedes Romain Grosjean
ICE: 2, TC: 2, MGU-H: 2, MGU-K: 2, ES: 2, CE: 2 Pastor Maldonado
ICE: 2, TC: 2, MGU-H: 2, MGU-K: 2, ES: 2, CE: 2

Marussia-Manor-Ferrari Will Stevens
ICE: 3, TC: 3, MGU-H: 3, MGU-K: 3, ES: 2, CE: 3 Roberto Merhi
ICE: 4, TC: 4, MGU-H: 4, MGU-K: 3, ES: 2, CE: 3

Sauber-Ferrari Marcus Ericsson
ICE: 2, TC: 2, MGU-H: 2, MGU-K: 2, ES: 3, CE: 3 Felipe Nasr
ICE: 2, TC: 2, MGU-H: 2, MGU-K: 2, ES: 3, CE: 3