Yvan Muller and SEAT enjoyed an ideal start to the latest round of the World Touring Car Championship in Mexico by topping free testing with a new Puebla lap record.
Returning to the circuit that saw the Spanish manufacturer claim an unprecedented 1-2-3-4-5-6 in last year's race, honours were fairly even during the first practice session of the weekend, with reigning champion Muller snatching the top spot away from BMW's Andy Priaulx in the dying seconds.
Setting a best lap of 1min 39.020secs, Muller was well underneath Jordi Gene's track record of 1min 40.808secs.
Up to that point, Priaulx had been in control for much of the 30 minute session, only surrendering the position to Rickard Rydell and Gabriele Tarquini briefly before regaining it before the chequered flag.
In the end, Priaulx had to settle for second position, although his team-mate Augusto Farfus gave BMW further hope of a good result in third, while Rydell and Tarquini followed in fourth and fifth.
Continuing to stamp his early mark on the Independents' Trophy, Felix Porteiro was sixth fastest in the Proteam BMW, ahead of Gene, Monteiro and former BMW Italy-Spain team-mate Alex Zanardi.
Elsewhere, Chevrolet filled positions 12th to 14th, with Nicola Larini leading Rob Huff and Alain Menu, while fourth manufacturer entrant Lada were down in 21st in the hands of Viktor Shapovalov.