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

Mercedes B-class fuel-cell drivers tell all

We met in a Los Angeles gas station, directly under the landing lights of LAX's south runway, our conversation interrupted regularly by the Prattt & Whitney thrust of 757s and Super 80s. We could easily be the main characters in an espionage thriller, handing off secret documents at great personal risk. But we're not.

Meet the new 2014 BMW 4-series coupe

Thanks to certain European websites, BMW's 3-series coupe replacement is out a few hours early. Here's the 2014 BMW 4-series revealed in production form. The 4 will take on the Audi A5 and Mercedes-Benz C-class coupe and make its public debut at the Frankfurt motor show in September.

Fiat launches new MultiAir engines

By Tim Pollard Motor Industry 09 March 2009 14:02 Fiat showed off the detail of its new MultiAir engines at the 2009 Geneva motor show – and we’ll finally be able to buy the tech on the new Alfa Romeo Mito supermini later in 2009. The brains behind the common-rail injection system that shook up diesel technology have now produced a new technology designed to make petrol engines more efficient and cleaner. Engineers claim the MultiAir engines – which use electrohydraulic actuation, rather than the more widely available electromechanical systems – boost power and torque, while cutting CO2 by between 10% and 25% and other pollutants by up to 60%.