Valtteri Bottas ended the day in fourth, lapping just under a tenth slower than Vettel in the afternoon.
"The first practice was compromised by the weather," said Valtteri. "We struggled to get many laps, and I also flat spotted at the tyres in FP1 quite badly, so we had limited running.
"But in second practice we got a lot of running done, both short runs and long runs. So in the end, we got everything from today that we needed. Setup-wise I think we have the usual work to do.
"Overall, it has been a pretty normal day. I enjoyed today, but I'm hoping there is more to come tomorrow. Hopefully it stays dry over the weekend, it would be nicer for the teams and the fans."