Grosjean edged out Kimi Raikkonen by 0.032s at his first visit to the circuit in an F1 car since 2009.
"Looking at today’s times I think it’s possible for us to be battling nearer to those ahead of us this weekend, as I think we can still improve our lap times", said Grosjean, who beat both Ferrari drivers in FP2. "I did not drive the best lap of my life with the option tyres today; with the first set of options you put on you have to go for it, so I think I can still improve a little bit. To get in front of the cars ahead of us will be difficult, but we will try, so why not? We had some updates that worked well, so we will keep them", he said.
Raikkonen was indifferent after the first day of practice.
"We were good on Friday in India and we’ve been strong again here in Abu Dhabi today. We tried a few new parts on the car in both sessions and we have some things to go through before tomorrow. Our lap times seem to be pretty okay so far; hopefully we can find a little bit more pace for tomorrow in practice and then again for the qualifying session", said the Finn.