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

The 500-hp club: The room is getting crowded

At a time when fuel economy counts for just about everything, there's still a horsepower war raging in the United States. The number of fire-breathing wedge-shaped supercars and hot sedans and coupes that can pump out 500 hp or better has nearly doubled in the past five years to more than 70. A decade ago there were just two members of the 500 hp club in the United States: the Ferrari 575M and Lamborghini Murcielago.

Mercedes S-Class Maybach spied (video)

The Mercedes S-Class Maybach hits the Nurburgring The new Mercedes S-Class is already starting to proliferate, with a wide range of engines, two wheelbases and the CL Coupe’s replacement – the new S-Class Coupe – already hitting the market. But Mercedes are far from finished extending the S-Class franchise, and we’ve got two more versions of the S-Class Saloon – the Maybach and Pullman – still to come, and the arrival of the S-Class Convertible still to come. And now it looks like the S-Class Maybach – effectively a replacement for the ill-fated Maybach brand – is getting closer to debut with this S-Class Maybach spotted testing at the Nurburgring.

Audi A7 (2007): first official sketch

By Tim Pollard First Official Pictures 27 July 2007 07:59 Audi A7: the world exclusive Completing CAR Online's hat-trick of Audi scoops is this - Ingolstadt's slinky answer to the Mercedes CLS. The A7 is due to land in showrooms in September 2009 and will be previewed by a concept at the 2008 New York Auto Show. For any manufacturer to launch a successful model against the CLS, it must turn heads like a scantily-unclad A-list catwalk model.