World champion Sebastian Vettel has accused Lewis Hamilton of acting stupidly during today's German Grand Prix.

Despite being a lap behind the leaders, McLaren's Hamilton refused to let the likes of Vettel and eventual winner Fernando Alonso pass by him with ease.

Asked about the incident after the race, runner-up Vettel expressed his anger at the former champion's actions.

"That was not nice of him," Vettel told reporters. "I don't see the point in him trying to race us. It is a bit stupid to race the leaders."

Vettel overtook Hamilton's teammate Jenson Button late in the race to secure second spot.