SRG Global

When it comes to fuel economy, the powertrain is the first thing people think of when it comes time to improving it. After that it’s typically vehicle weight. However, one of the simplest and most effective ways of improving fuel economy is through aerodynamics. Everyone knows that the slipperier a vehicle--denoted by Coefficient of Drag (Cd)--the better the fuel economy. But how does an automaker improve the Cd without significantly changing a vehicle’s size or shape? One way is through the use of active aerodynamics. GM is one such automaker looking to improve the fuel economy of its...