Spa-Francorchamps (Belgium): Formula 1 team McLaren on Friday changed the engines and associated elements on driver Fernando Alonso's and Jenson Button's cars, incurring a combined 55-place grid penalty for Sunday's Belgian Grand Prix.

The changes made at Spa Francorchamps circuit on Friday's practice session meant Alonso and Button are now on to their seventh engine of the season, two more than the regulations permit for new engine manufacturers.