Porsche Oem Boxster Roll Bar Headrest Head Rest Assy-tension Cable 98656119102 on 2040-parts.com

BMW: Don't fear the stop/start system in the 2012 3-series

BMW is taking a calculated risk by installing an automatic stop/start system on its best seller, the 3-series, for 2012. But company brass is optimistic that American consumers will adjust to the relatively foreign technology. "Many customers will enjoy the car very quickly," said BMW board member Ian Robertson, who oversees sales and marketing.

BMW X1-based electric crossover launches in China

If the car above looks like a BMW X1 that's received a new grille, that's because it is. But there's more on the inside. More specifically, an electric powertrain and a name you haven't heard: Zinoro.

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.