Bell Mx9 Pro Circuit (monster) Dirt Helmet Size Small on 2040-parts.com

Porsche Panameras with 300-hp V6 to arrive in the United States in June

The six-cylinder siblings of the V8 Porsche Panamera will hit U.S. shores in June, packing 300 hp and starting at $75,375 for the rear-wheel-drive model. The all-wheel-drive version, called the Panamera 4, starts at $79,875, including destination charges.

Brabus tunes the Mercedes-Benz SLK for more power, better handling

Mercedes-Benz tuner Brabus is going to work on the new SLK200 and SLK250 roadsters, adding some power, exterior modifications and suspension upgrades. The four-cylinder SLKs aren't for sale in the United States right now, but the SLK250 is scheduled to arrive by February 2012. Currently no kits are offered for the V6-powered SLK350.

What Car? True MPG reveals most fuel-efficient cars

We’ve known for a while that there’s a huge gulf between the official fuel economy figures for new cars and what drivers achieve in the real world. What Car? says that its True MPG tests provide a more realistic figure and over the past two years it has tested almost 400 cars. Now, it has revealed which 10 cars proved most efficient its True MPG tests, so if you’re hoping to spend less at the fuel pumps, these cars could be well worth a look.