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

NHTSA to study power-steering complaints in the Toyota Corolla

U.S. highway safety officials will begin a formal investigation into electric power steering complaints in the Toyota Corolla, a person familiar with the plan said. The National Highway Traffic Safety Administration study will focus on vehicles from the 2009 and 2010 model years, said the person, an agency representative who didn't want to be identified before an announcement is made.

Porsche celebrates 50 years of the 911 at Pebble Beach

Seven generations across 50 years; nobody has ever matched what Porsche has done with the 911. What started out as the Porsche 901 quickly became the 911 – and wouldn’t take long to become a legend. As one of the most accomplished road-going supercars ever created, it's easy to see why the 911 is also a consummate champion in the motorsport arena – and to celebrate that fact, at Pebble Beach 2013 there was a huge array of road and race 911s, courtesy of Porsche itself along with a stack of private owners.Click through the gallery to see our pick of these great cars...

Audi unveils armored A8L Security

While unveiling the Allroad E-Tron Shooting Brake at the Detroit Auto Show, Audi also quietly debuted the A8L Security version of its new range-topping sedan this week, armored to the highest level of ballistic protection for passenger cars. The A8L Security is based on the facelifted version of Audi's third-generation A8 sedan, and this armored version will be available both with Audi 4.0 TFSI V8 engine and the 6.0-liter W12. Audi set out to design the current A8L with building an armored version in mind, as opposed to the first-generation A8 of the 1990s which was not offered in Security specification until very late in the product cycle.