Speaking after the session, Bottas said: “Honestly that first run in Q3 was one of my best laps.”
Hamilton was full of praise for his Mercedes team-mate, adding he was shocked by their pace in Mexico.
Hamilton said: “We did an amazing job. I’m so proud of Valtteri, I think he’s been driving so well in these last few races. So it’s really great for the team. They’ve been working so hard. We didn’t think we had the pace this weekend.
“So to lock out the front row is pretty special. And obviously gives us a good fight with the others tomorrow.