"Do we have more potential? I mean time will tell," Hamilton said.
"We’ve been focusing on trying to understand this car and getting the most out of it and as I’ve said, there’s never generally been the perfect day, but there’s more potential in the car for it to grow.
While Hamilton was happy with what Mercedes and himself accomplished in Spain, as the team validated the design of its W08 and confirmed its reliability, the Brit certainly did not squeeze all the car's juice out of it.
"I didn’t feel like I got everything out of it [the car], so I could go faster, but of course there are all sorts of things that can bring the time down [such as fuel load]."
"We did everything we needed to do and learned a lot, which is always a positive as some days you don’t learn a lot.
"You chase your tail sometimes. But we learned a lot. I feel confident we’ve got everything we need from this test."