Williams driver Juan Pablo Montoya believes Ferrari have made a mistake in their decision to run with last year's car at Sunday's Australian Grand Prix.
The Colombian said today that Ferrari's decision to stick with last year's version could cost them their chance of winning the season-opening Formula One race.
"They're starting with a car that last year had a lot of potential," Montoya said. "But if they didn't change the car a lot from last year, it might not be the winning car."
Montoya said Ferrari's decision to stick with a more reliable car rather than risk going with a new car would give the Williams team a big advantage.
"(It's) positive for us and negative for them if you really think about it. If we came here with last year's car we'd end up 10th on the grid."
The Williams team is feeling bullish after an impressive pre-season testing programme with Australia's former world champion Alan Jones already tipping Montoya to challenge Michael Schumacher for the drivers' championship.
"If the development and the progress of the car continues, I think he's got every chance of beating Schumacher," Jones said.
The 26-year-old Montoya made a big impression in his first season in Formula One last year, claiming his first victory at Monza in September.
For his part, Montoya was keen to play down his pending rivalry with Schumacher, saying he treated him just like any other driver.
"Apart from Michael, you've got to beat everybody else as well," Montoya said.