The Porsche Cayenne S Hybrid will go on sale in the U.S. this November, with prices starting from $67,700, excluding destination charges. Rated by the EPA at 21 mpg in the city (11.2 lt/100 km) and 25 mpg on the highway (9.4 lt/100 km), the Cayenne S Hybrid will not be subject to a gas-guzzler tax, as is the case with all other 2011 Cayenne models.