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

Sky takes Mazda powertrains to the next level

Mazda's next-generation of powertrains, called Sky, will feature a variety of new technologies that company engineers say improve fuel efficiency by 20 percent. The Sky engines--Sky-G for the gasoline version, Sky-D for diesel--coupled with a Sky-Drive automatic transmission or a six-speed manual, were offered for test drives during a technology day in Berlin. The Sky-G engine we drove was a 2.0-liter inline-four that made 160 hp and 155 lb-ft of torque.

One Lap of the Web: Jay Leno does the T-REX, Porsche 912 restoration and cars with swimming pools

We spend a lot of time on the Internet -- pretty much whenever we're not driving, writing about or working on cars. Since there's more out there than we'd ever be able to cover, here's our daily digest of car stuff on the Web you may not otherwise have heard about. -- Watch as Jay Leno explores the 2013 Campagna Motors T-REX, a three-wheel, street-legal motorcycle that is insanely fast, especially since one of the powertrain options is a six-cylinder BMW engine and the thing weighs practically nothing.

Smart Forfour (2015): first official photos

By James Clark First Official Pictures 16 July 2014 19:30 The Smart ForFour is back - and this time it's twinned with the new, rear-engined Smart ForTwo rather than a bitsa Mitsubishi. The second-generation Smart ForFour was unveiled at an event in Berlin tonight, and marks the return of Daimler to the affordable family hatchback segment. With weak sales and an indistinct DNA, the first Smart ForFour was a sales flop and lasted only a couple of years.