It was a Ferrari one-two in practice one, with Carlos Sainz leading Charles Leclerc at the Circuit Hermanos Rodriguez.
Home favourite Sergio Perez and Red Bull teammate Max Verstappen set the exact same lap time in FP1, ahead of Lewis Hamilton and Fernando Alonso.
FP2 will be an extended 90-minute session, as Pirelli have been granted another tyre testing session. Every driver will be expected to run to Pirelli's tyre test plan, with only the drivers who missed FP1 permitted to run a semi-independent session.
Meanwhile, behind the scenes, news of cost cap penalties broke - with Red Bull being slapped with a fine and deduction in testing time/allowance.
Aston Martin have also copped a fine, although this is purely for procedural reasons as they stayed within the cap.
Below you will find our dedicated live blog and live timing hub; the times refresh automatically during the session, so you are always up to date.
In the blog, we will provide you with the latest developments during FP2 in Mexico City, and you can easily switch between live timing and the live blog via the tabs.
Free practice 2 - Mexican
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