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Audi has established itself as the early manufacturer to beat after ending the first day of free practice for the 2015 World Endurance Championship opener at Silverstone with a clear 1-2.
With the #8 R18 e-tron emerging quickest in FP1, it was the turn of the #7 trio of Marcel Fassler, Benoit Treluyer and Andre Lotterer to strike for the top spot in FP2, the three-time Le Mans winning team fastest by three tenths of a second over team-mates Oliver Jarvis, Lucas di Grassi and Loic Duval.
A strong opening for the deposed champions, Audi was comfortably quicker than Porsche, its German rivals following up in third and fourth – the Mark Webber helmed #17 car ahead of the #18 919 Hybrid -, but more than half a second adrift of the ultimate pace.
Meanwhile, reigning champions Toyota got its title defence off to a low key start, with the #2 TS040 Hybrid of Alex Wurz, Stephane Sarrazin and the incoming Mike Conway in fifth place, while the title defending #1 car of Anthony Davidson, Sebastien Buemi and Kazuki Nakajima were more than two seconds down in sixth.
In the LMP2 class, the G-Drive Ligiers moved clear of the chasing pack, the #28 car led by Gustavo Yacaman seven tenths quicker than Sam Bird in the sister JS P2 machine, while the KCMG Oreca was third, albeit 1.5secs adrift of the ultimate pace.
The competition remain somewhat closer in the GTE class, with Porsche assuming the top spot with Michael Christensen and Richard Lietz ending FP2 just ahead of the sister Manthey car of Frederic Makowiecki and Patrick Pilet, while the Aston Martin of Paul Dalla Lana, Mathias Lauda and Pedro Lamy leads the GTE Am category.