Runaway Qatar MotoGP winner Jorge Lorenzo has admitted that repeating victory at Austin this weekend will be more complicated than it was in the desert, not least because of the Yamaha's poor performance in testing.

The reigning world champion, who nailed the Losail win in about four laps, struggled when he and team-mate tested with Honda at the Texas track, citing acceleration as one area where they were down on the RC213V.

“Qatar was stunning for us. A great start of a really competitive season. It’s always crucial to make a good beginning but Losail was just the first race of a long season. Now we have to change our mindset, we go to the USA and we visit a completely different track, not just the layout but also for the asphalt, the climate and some different circumstances," said the Spaniard.

"The Austin track has a very long straight and several corners in first gear where you are need good acceleration and traction. There we will have to work really hard from the first session to cut away the distance to our competitors. Anyway, I keep my confidence that we can also make a good result there. I want to win at Austin and that’s my mentality although I know in the USA it will be much more complicated.”