15. Porsche 911 Carrera 4S
Almost every 911 has a flat-six engine, including the 993 generation Carrera 4S. In 1993, Porsche introduced the next generation of 911 with internal chassis code 993. This was an improvement over the 964 in terms of design, materials, and equipment. Basic components, transmissions, and engines remained more or less the same.
The 993 generation turned out to be the last air-cooled generation of 911 and Porsche enthusiasts call it the last classic 911 model. It had several interesting models. But the Carrera 4S was one of the best driver’s versions. It featured Turbo chassis, suspension, and braking along with intelligent all-wheel drive paired with a 3.6-liter flat-six producing 285-300 HP.