@ZAC: Yes, that as well, but these engines have two less cylinders and are more powerful. Efficiency is the name of the game.
Four minutes left in this session.
@ANupam: I can't see them troubling the points unfortunately.
@matiasisrael: They are turning the engine up at this race before introducing an engine upgrade in Spain, so very soon!
Speaking of Kvyat, the Russian is back out on track and may just get a qualifying simulation in before the end of the session.
Button is told there isn't much improvement being made on a third soft tyre run but is told to stay out as McLaren's running has been limited today. Crucial data gathering taking place.
Kvyat crosses the line with 40 seconds to go, so he'll get a qualifying simulation in.
@Rodster: Yep, always two hours after the end of FP3.
Kvyat can only manage P12 with that qualifying simulation.
Grosjean locking up on the entry to Turn 10.
Well then, that's all from FP3. Mercedes-Ferrari-Mercedes-Ferrari is the order, with five tenths between the top four.
Hard to read too much into this session but clearly Ferrari is in the hunt again this weekend.
We'll be back half an hour before qualifying for more live commentary and build up. Please do join me again for what should be a fascinating session under the lights!