Olen Inman was fastest in practice ahead of the Mexican V-Prix, but only by a small with both Will Hoskins and Nikolai Milkovich within one tenth of a second of the new championship leader. Meanwhile his main rival and team mate Adrien Simon was only tenth.
Inman was just outside of breaking the 70-second mark with a 1:10.058, just 0.070 quicker than Hoskins with Milkovich only 0.003 further back. The top six were all within two and a half tenths with less than one second covering the top fourteen.
Jarod Lindsey took the place of Felix Beyer at AMR for this practice session and impressed with the ninth fastest time, while Enrique Ruiz once again found himself outside of the top ten. Towards the back Karl Beckenbauer lapped quicker than both Downtons, Judson Sikes topped the new team battle ahead of Jamie Gerrard - running in place of Arden Hutchinson - and Douglas Bacon, with Aron Einarsson slowest behind Sebastian Bergkvist - in for Kiara Thunder.
Today's times could be irrelevant however, as rain is forecast for qualifying tomorrow.
See full times below: