Porsche AG, the maker of the 911 Carrera sports car, said it plans to beat the European Union’s next two sets of tighter vehicle-emissions standards by as much as six years.

The carmaker plans to achieve both the so-called Euro 5 and Euro 6 standards by 2008, Stuttgart, Germany-based Porsche said in a faxed statement. The company is also developing flexible- fuel vehicles that can run on a gasoline mixture that includes as much as 85 percent ethanol, Porsche said.

Euro 5 standards, aimed at reducing cars’ and vans’ nitrogen-oxide and particle emissions, take effect in September 2009 and the Euro 6 rules, which tighten diesel models’ nitrogen- oxide exhaust limits further, will be implemented in January 2014, according to the European Union’s Web site.

Porsche said in September 2005 that it would develop a hybrid gasoline-electric powered version of the Cayenne sport-utility vehicle. The company said today that it expects the model, using an engine developed jointly with partner Volkswagen AG, to come onto the market this decade.