Lower-priced electric vehicle may have a record-low drag coefficient among mass-produced vehicles.
It may not look it, but the 2014 Mercedes-Benz CLA-Class is aerodynamic as all get out. How slippery is it? Well, the compact sedan has a drag coefficient of 0.23, which will make it the world's most aerodynamic series production car when it goes on sale in the US this September. By comparison, the most recent body update for the Toyota Prius cut the drag coefficient of that hybrid model to 0.25 from 0.26, while the 2013 Nissan Leaf electric vehicle has a 0.28 drag coefficient, down from 0.29 fo
The Aerocivic apparently has a distant relative from Canada. Darin Cosgrove, founder of Ecomodder.com, has added a boat tail to the back of his 1998 Pontiac Firefly (which is what the Geo Metro was called up north). According to Wired, the modified bodywork was constructed from cardboard, aluminum and duct tape, and it joins a series of previous aero mods including rear wheel skirts and a bellypan.
Back in the spring of 2008 when General Motors took us on a tour of its wind tunnel facility, chief engineer Frank Weber emphasized the importance of aerodynamics in maximizing the electric driving range of the Volt. At that time, all we got see was a one-third scale model covered in various colors of duct tape. However, GM's aerodynamicists, including Nina Tortosa, explained that even at lower speeds, resistance to air-flow played an even bigger part in efficiency than the car's mass.
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