Niki Lauda says Sebastian Vettel will continue to win titles even if he leaves Red Bull for another team.
Last Sunday the German wrapped up his third successive Drivers' Championship, beating Fernando Alonso to the 2012 crown by just three points.
Vettel has a contract with Red Bull Racing for the next two seasons, however, he has been linked to a move to Ferrari in the future.
And should the German swap teams, whether that be Ferrari or another, Lauda believes the 25-year-old has the ability to win titles with a rival outfit.
"He will eventually move somewhere else," Lauda, who won two Championships with Ferrari and one with McLaren, told CNN.
"It's normal. Any skier changes his skis every year - so you have to change your cars at least once in your history.
"I changed my racing cars three or four times in my career and still kept on winning. He will do something like this for sure as well."
He added: "Vettel is the top guy, [Lewis] Hamilton is the top guy, Alonso is the top guy, Schumacher is a top guy too.
"You need a car, and you need a driver. Vettel is for sure as good as Alonso is - but you need a better car."
Red Bull deny Vettel extension
Any reproduction, publication or redistribution of this material without the written agreement of 365 Media Group is strictly forbidden.