The 2014 Porsche Boxster is available as a 2-door, 2-seat convertible. Starting at $50,400, the 2014 Porsche Boxster Base is powered by a 2.7L, 6-cylinder engine mated to a manual transmission that returns an EPA estimated 20-mpg in the city and 30-mpg on the highway. The top of the line 2014 Porsche Boxster S, priced at $62,100, is powered by a 3.4L, 6-cylinder engine mated to a manual transmission that returns an EPA estimated 20-mpg in the city and 28-mpg on the highway.