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

Chevrolet Volt faces toughest test--consumers

Scientists, journalists and a slew of other alleged experts have all weighed in on the 2011 Chevrolet Volt, and now the only verdict that truly matters--the public's--will be rendered. General Motors said 6,348 consumers have taken the extended-range car for a spin during a 12-city “Volt Unplugged Tour,” and not surprisingly, GM's reviewers like it. Still, initial feedback does appear to be truly positive.

2012 Acura TSX Special Edition aimed at the younger generation

Acura is continuing the celebration of its 25th anniversary by creating a special-edition TSX with a slant toward the track. It doesn't add any power, unfortunately, but it does attach the bits that look the part. The 2012 TSX Special Edition package comes with a more aggressive front spoiler, a new bumper fascia, unique side sills and special-edition badges on the trunk.

Mercedes’ AMG division unveils new twin-turbo V8

Those obsessed with torque bemoaned Mercedes’ high-revving 6.2-litre V8 when it was launched in 2005, but just as the world has come to accept the naturally aspirated engine, the company has now unveiled a new twin-turbo 5.5-litre V8. Up to 563bhp – which is the same as the SLS AMG – and 663lb ft, which is much more than the 479lb ft the modern-day Gullwing supercar manages. The engine is an all-new 5.5-litre V8 (5461cc to be exact) with direct-injection technology, an aluminium crankcase and two turbochargers.