The very fast Spa Francorchamps has revealed a dramatic drop in the power levels of Ferrari F1 power unit compared to its rivals from Mercedes, Honda and Renault, and the Ferrari is the only team to set a slower time than last year.

Lewis Hamilton achieved a record 117th start from the first row and 72rd pole position in Austin - we bring you best sector times, top speeds at the end of each sector and speed trap analysis.

Sergio Perez said that Mercedes' engine power is currently only ahead of Honda and that Renault is 'more or less there'. But of course, that is not true. And here is why.