Porsche 911.
The rear-engined icon.

The 911 has been in continuous production since 1963 and stays faithful to its rear-mounted, naturally aspirated or turbocharged flat-six layout. Each generation carries its own body code, from the 964 and 993 through the 996 and 997 to the modern 991 and 992. Drive goes to the rear axle, or to all four wheels in Carrera 4 and Turbo forms. Transmissions are manual or the PDK dual-clutch, depending on variant and generation. Values vary mostly by generation code and specific variant.