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

Top 5 most important cars at the 2013 Frankfurt motor show

The five most important memorable cars in attendance at the world’s biggest motor show Nothing is as controversial as irritating your core enthusiasts, and the Audi Sport Quattro concept risks doing just that. Its name and styling riff off one of the most iconic cars in Audi’s back catalogue – and in WRC history – yet the new yellow version unveiled at the 2013 Frankfurt motor show has abandoned the five-cylinder engine, manual gearbox, and respectable kerbweight of the 2010 Quattro concept. In its place, we’ve an RS7-based coupe with the power of a Lamborghini Aventador (691bhp), twice the claimed economy of a Golf GTD (113mpg), but only because of a twin-turbo V8 mated to a hefty hybrid powertrain, and that means this new Sport Quattro weighs as much as a Bugatti Veyron Super Sport (1845kg).

Lincoln Quicksilver Ghia concept heads to auction

Next week at the Mecum Auction in Kissimmee, Fla., bidders will get a chance to take home something truly unique, a Lincoln Quicksilver concept car created by Carrozzeria Ghia in 1983. This radical concept was created at a time when Ghia was a division of the Ford Motor Company. The concept itself debuted in one place where the Lincoln brand was, ahem, somewhat underappreciated: the Geneva Auto Show.

Mercedes-Benz B-class Electric Drive starts at $42,375

Even though the gas-powered Mercedes-Benz B-class has been out in Canada for a few years now, long enough to receive a facelift, we Americans will be getting the compact MPV in electric form only. Sales of the B-class Electric Drive will start this summer with the BMW i3 in its sights. Here's what buyers can expect when this tall four-door electric hatch silently rolls into dealership showrooms.