When two drivers who have won nine of the last 11 Formula One championships describe the motorsport series as a “mess,” you know there are serious issues.

The five-time champion Lewis Hamilton of Mercedes, and Sebastian Vettel of Ferrari, with four titles, have questioned the sport’s future, and they are not alone.

Before this season’s 10th race on Sunday, the British Grand Prix, there is concern about the state of Formula One, with a dominant Mercedes team marching to its sixth consecutive constructors’ title and Hamilton to his sixth drivers’ championship.

“Don’t point fingers at the drivers because we don’t write the rules,” Hamilton said after his routine victory in France last month. “You should put pressure on the people at the head who should be doing their job. I think they are trying to, but for many, many years they have made bad decisions.”