2010 Mercedes-Benz S400 Hybrid compare

The 2010 Mercedes-Benz S400 Hybrid bundles a wide array of very useful tech, and its hybrid system helps the car avoid the gas guzzler tax.

Mercedes-Benz bolsters its reputation for luxury with the 2012 CLS550. A powerful and efficient engine propels this sleek ride, and there are a number of advanced driver-assistance features.

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 2014 Acura RLX makes a game attempt at being a high-tech roller, but suffers from flaws serious enough that they should send Acura back to the drawing board.