ZF boss thinks 9 speeds is enough for transmissions

The nine-speed transmission might be where the race to add gears ends, ZF Friedrichshafen CEO Stefan Sommer said. He referred to nine speeds as the "natural limit" because going beyond that number adds weight and complexity that cannot be offset by gains in fuel efficiency. "There is no hard line, but you have to consider the law of diminishing returns.

2014 Range Rover adds supercharged V6

In addition to a complete inside-and-out redesign, the big story for the new-for-2013 Range Rover was the weight savings -- about 700 pounds worth thanks to an all-aluminum unibody structure. On Wednesday, we caught wind of the 2014 model. Word on the street is Jaguar-Land Rover's 3.0-liter supercharged V6 will replace the normally aspirated V8 for next year.

2015 Subaru WRX revealed ahead of LA Auto Show

Subaru's 2015 WRX model is slated to make its world debut at the LA Auto Show, but we're getting an advanced look a the enthusiast favorite thanks to a brief teaser video and what may be a leaked image of the sedan making the rounds on the Web. The Japanese automaker has kept the new WRX pretty tightly under wraps. Besides the WRX concept we saw at the New York auto show , Subaru has released little more than a seven-second teaser video.