2012 Mercedes-Benz CLS550 compare

The 2012 Tesla Model S sets a new standard for cars of the 21st century by integrating cabin tech equal to anything from the consumer electronics industry and incorporating a long-range, powerful, and efficient electric drivetrain.

The 2013 Audi S7 features a phenomenal amount of tech both in the cabin and under the hood. An impressive sport driver, its fuel economy remains decent enough for a daily commute.

The smooth and quiet 2013 Jaguar XJ makes driver comfort its top priority, but an aging cabin technology package and an unrefined fuel-saver system give a rough edge to this refined ride.

The powerful, comfortable 2013 Mercedes-Benz CLS 63 AMG feels like a car that's worth its high asking price, but we'd wait for the next generation of its Comand interface before taking the plunge.