Marchionne also said that he and Ferrari management were discussing a reorganisation of the company's range.
"We're going through a very thorough self-examination - it's the single largest topic on our agenda," he said.
He confirmed that Ferrari production would stay below 8,500 units annually, but recognised that long waiting lists for some Ferrari models might drive prospective buyers elsewhere.
He proposed a potential expansion of the range, but refused to be drawn on specific models.
"The California T is perhaps one area where we can do more," he said. "But we will not produce any car that the market doesn't want."
Sergio Marchionne. Photo / Supplied
"A big problem is that the waiting list for some of our cars is so long that buyers might get impatient and look elsewhere."
Regarding the F1 title tilt, he said: "Winning the F1 title is the easiest promise I can make. If I get it wrong, I'm suddenly retired anyway.