Type keyword(s) to search Our car experts choose every product we feature. We may earn money from the links on this page. Tested: 2022 Porsche 911 GT3 PDK Rockets to 60 in 2.7 Seconds Porsche's new track-focused GT3 is the perfect home to celebrate natural aspiration. Marc UrbanoCar and Driver From the June 2021 issue of Car and Driver . Naturally aspirated is the new air-cooled. Just as the efficiency and proliferation of water cooling squeezed out air-cooled engines, the popularity of turbochargers is bringing an end to naturally aspirated engines. Like the final air-cooled flat-sixes, Porsche's latest naturally aspirated flat-six, with its distinctive sound and feel, seems marked for extinction. To showcase this special engine, Porsche is putting it exclusively in the new-generation 911 GT3, which costs about $18K more than the last. That's a big number to rationalize to your accountant, so here's what you say: