Vettel made an error in his first run in Q3 and could only manage fourth.
"I've just come out of qualifying knowing I could have done a little bit better. I'm keen to go back now and look at the data and see where I wasn't quick enough", he said.
"Q3 was not 100 per cent perfect. Q2 was quite good for us. The first run in Q3 was not good for me as I did a mistake going into Turn 4. The second run I was pretty happy with it but it wasn't quick enough", he added.
Vettel remains optimistic regarding the race.
"Obviously Mark was a bit quicker, but I think we are in good shape and we've competitive all weekend".