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

First Sight: Smart Fortwo and Forfour

"Dress-down Wednesday," remarked a colleague as Daimler CEO Dieter Zetsche walked on stage wearing jeans and no tie. While it was a hot day in Berlin, Zetsche's excuse for his informal attire was the occasion – the new Smart is here. Its prospective owners, he explained – young, urban consumers with an active lifestyle, not the typical members of corporate Germany – adhere to a different, if similarly rigid etiquette.

Ferrari F150 (2013) first details on hybrid Enzo

After various leaks and rumours over the past few months, Ferrari – via its official customer magazine – has confirmed it will launch a new supercar to succeed the Enzo in 2013. It's been officially named as the Ferrari F150, and it will be powered by a V12 engine bolstered by a F1-style KERS hybrid system. Supercars are defined by their engines – what powers the new Ferrari F150 supercar?

U.S. seeks 5 percent annual fuel-economy gains through 2016

The Obama administration today proposed gasoline mileage and greenhouse-gas pollution standards for new vehicles for model years 2012 to 2015, filling in the blanks for manufacturers en route to a 35.5 mpg national target in 2016. The Transportation Department and EPA proposal calls for fuel economy to increase by about 5 percent each year, starting from an average of 27.3 mpg for the 2011 model year, the agencies said in a statement. The average car buyer would save more than $3,000 in fuel costs over the life of a vehicle, the statement said.