This sports car hasn't earned its reputation overnight, of course. The 911's 41-year run is a story of steady, subtle improvement punctuated by periodic major overhauls. The changes for 2005 are closer to an overhaul, marked by a change in the 911's internal codename at Porsche (it's designated 997, replacing the 996, which had been built since 1998). If the 2005 model looks conspicuously similar to the original 1964, this 911 is nonetheless a thoroughly modern driving machine, packed with the latest in material advances, engine technology and electronic management. The 911 remains the standard by which other sports cars are judged, and the 2005 raises the standard.

There are hundreds of changes from 2004, including new electronic technology, more powerful engines and a redesigned interior. The 911 is equipped with curtain-style head-protection airbags for the first time. Even the familiar silhouette has subtle changes a Porsche nut will notice in an instant. These styling tweaks increase storage space and improve aerodynamic efficiency; in our view, they also increase the 911's sex appeal.