Grosjean denies 'crash-prone' charge
Lotus F1 Formula One driver Romain Grosjean (C) of France talks to technicians as he sits in his car ahead of the Canadian F1 Grand Prix at the Circuit Gilles Villeneuve in Montreal June 7, 2012.
Sergio Perez was furious with the Frenchman after a collision in Barcelona, and then Kamui Kobayashi had to retire with suspension damage after the first corner in Monaco.
"He deserved a penalty (for Monaco)," team manager Beat Zehnder is quoted by Germany's Auto Motor und Sport.
"He drove into two cars. If Schumacher is punished in Barcelona, why not Grosjean (at Monaco)?"
Team boss Peter Sauber added: "The guy has both of our drivers on his conscience."
Grosjean, having returned with Lotus this year after his abortive 2009 debut, denied he is crash-prone.
"In Australia (with Pastor Maldonado), I couldn't really do anything about it," he is quoted by France's Auto Hebdo.
"In Malaysia (with Michael Schumacher) it is true that it was my fault.
"And Monaco? What could I do?" said the 26-year-old.
"Trying to get a scooter and a bus through Ste Devote is difficult enough, let alone four formula one cars.
"It's part of the game. The start is a crucial moment in the race but I don't think I've been overly aggressive with the others, just unlucky.
"I don't think I've ever done something crazy," insisted Grosjean.