Arias Pistons 12.5:1 Compression 82mm Bore Honda B-series on 2040-parts.com

Future products: Mazda's new direct-injection engine family arrives in 2011

The big news at Mazda is a new family of direct-injection gasoline and diesel engines that will start to arrive in 2011. Mazda will make significant changes to vehicle platforms to accommodate the Sky engines, which will be more powerful and fuel-efficient at lower displacements than the company's current engines. The first Sky gasoline engine is expected to debut in the United States in 2011.

Porsche – the boss goes

Porsche boss Wendelin Wiedeking quits Well, Wendelin Wiedeking is not just any old suit, but the man credited with taking Porsche from an ailing, one-model car maker to the cash-cow it became. But Wendelin has become a victim of his own success – and the current economic woes. At any other time in the last decade, Wendelin’s plans to swallow VW would have worked.

NHTSA upgrades probe into Jeep fuel tanks

The National Highway Traffic Safety Administration has upgraded its investigation into the fuel tank on three Jeep models to an engineering analysis, another step toward what could become a recall. Safety advocates say the location of the fuel tank, mounted behind the rear axle, makes it prone to catching fire in the event of a rear crash. The investigation covers Jeep Grand Cherokees built between 1993 and 2004, Jeep Cherokees built between 1993 and 2001, and Jeep Liberty SUVs built between 2002 and 2007.