BBC F1 technical analyst Gary Anderson in Jerez
"It's early days here in Jerez, and I have been out on the track to have a look at the cars and how they're behaving. People are running lots of different fuel loads, and that can have a major effect on the handling of the car, but you can look at general characteristics. Like last year, the Lotus looks good. Romain Grosjean is able to keep the front tucked in nicely on the tricky exit of Turn Two, where the track falls away. If a driver misses his braking point, it can be hard in a tricky car to keep it on line, but the Lotus is going well. Mark Webber appeared to be running a lot of fuel in the Red Bull, which looked cumbersome. The Ferrari looked pretty good and vice-free. The car seemed well planted and Felipe Massa looked committed, which is always a good sign. And overall, I'd say the gap between the front of the grid and further back may well have narrowed."