Sarkozy is not libertarian at all if that's what you mean by "libéral". He's just as socialist as the left when it comes to the economy. To give you an idea, Sarkozy created more than 50 taxes during his mandate [1] and didn't cut on spending while creating more social aid programs (RSA). Only in France would he be considered a libertarian or "néo-libéral" as they say just because he limited the maximum amount of tax one could pay to 50% [2]. A 50% tax makes you a libertarian, Ayn Rand disciple in France, isn't that insanity? You still have to work until the 28th of July for the State in France.
1: http://www.contrepoints.org/2012/03/07/72137-lahurissante-ac...
2: http://tempsreel.nouvelobs.com//file/318975.pdf