Ex-world champion Nigel Mansell says Formula One is so boring that he cannot even bear to watch it on television.
Schumacher's Ferrari takes the chequered flag for the ninth time in 2004
"I've tried to defend it because it meant such a lot to me for so many years," the Briton told the Times newspaper on Monday.
"But even I can no longer go on defending the indefensible.
"How can you when there is virtually no overtaking on the track and little genuine excitement?" added the 1992 world champion.
"I'll usually sit down to watch the start of a Grand Prix but after a few laps I find I can't watch any more and switch off. It's that bad."
Mansell's comments come a day after current world champion Michael Schumacher won the French Grand Prix, his ninth victory in 10 races this season.