Here's a new review of the latest generation 2013 Porsche Cayman. For the purpose of this test, Porsche's 2013 Cayman is being driven around some winding country roads. The new Cayman (2013) is powered by a 2.7-litre 6-cylinder engine that develops 275 hp, while its high-performance version, the S, comes with a 3.4-litre engine, which is good for 325 hp. The new 2013 Cayman is 30 kg lighter than its predecessor and it's also 40% stiffer.