Fernando Alonso believes the battle for Formula One supremacy will be a lot tighter this year.
Alonso is bidding to replace two runner-up places to Sebastian Vettel with a maiden title for Ferrari.
Last season's world championship was remarkable for the fact there were seven race-winners in the first seven races before Alonso went toe-to-toe with Red Bull ace Vettel in a decisive, thrilling finale at Interlagos.
Vettel, the sport's youngest-ever three-time world champion (2010, 2011, 2012), finished sixth at the legendary Brazilian circuit, where Alonso was second, to beat his Spanish rival to the title by only three points.
Alonso, speaking at the launch of Ferrari's new F138 car for the upcoming season, indicated that their anticipated duel in 2013 could leave rivals trailing in their wake from the season-opening Australian GP in March.
"I think the likelihood of seeing seven different race winners in the first seven races, like last year, will be impossible," he said.
"There will be a maximum of two or three teams battling for the title, and one of those will definitely be Ferrari."
Alonso, a two-time world champion with Renault in 2005 and 2006, joined Ferrari for the 2010 season and finished runner-up to Vettel.
He finished a disappointing fourth the following season but in 2012 won three times and secured a total of 13 podium places before being pipped by Vettel at the finish.
The F138 - whose name represents the current year and the car's V8 engine, which will be used for the last time this season - was unveiled at Ferrari's Maranello headquarters in northern Italy on Friday.
Ferrari described it as "an evolution of last year's race-winning car, although every single part has been revised in order to maximise performance while maintaining the characteristics which were the basis of the F2012's superb reliability".
The "Scuderia" have retained the front and rear pull-rod suspension set-up introduced last year but said they had "refined it for maximum aero advantage".
"The rear of the car is much narrower and more tapered than before," added Ferrari, although "significant modifications will be made to the car's aero package" before the Australian Grand Prix on March 17.
One major change Ferrari has made, one year ahead of schedule, is in the electronics domain with the early introduction of the single control unit that will be used in 2014.
Alonso is set to get his first taste of the F138 at a pre-season testing session in Barcelona from February 19.