Red Bull driver Max Verstappen will start from the back of the grid at Sunday's Italian Grand Prix after Honda confirmed that his car will be fitted with an upgraded power unit this weekend.
The upgraded engine has been scheduled into Honda's development plan since the start of 2019, but will take Verstappen over his allocation of engine components for the year, resulting in a grid penalty. Known as the "Spec 4 PU", it was also fitted to Alex Albon's Red Bull and Daniil Kvyat's Toro Rosso at Spa-Francorchamps for Friday practice, resulting in grid penalties at the Belgian Grand Prix for those two drivers.