06SRT10
Full Access Member
Lower a truck's tailgate improves mileage, myth or truth. Drivers of pickup trucks have long assumed that lowering the tailgate is better for aerodynamics & therefore improves gas mileage. But, according to Diane Bloch, an aerodynamic-performance engineer for General Motors, driving with the tailgate up is actually more aerodynamically efficient. She says that as air flows over the truck, it falls over the truck, it falls over the cab & pushes forward on the rear of the truck. The benefits of that air flow are diminished when the tailgate is down. Bloch says that replacing the tailgate with an aftermarket net is worse than having no tailgate at all, she compares it to a boat dragging a fishing net through water. What are your thoughts.

