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Reducing the drag coefficient in an automobile improves the performance of the vehicle as it pertains to speed and fuel efficiency.
A front air dam is often used which extends from the very front of the vehicle down to the lowest part of the vehicle.
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In order for the air to flow more smoothly around the wheel well, smooth wheel covers are often applied."Designing for design's sakewith aerodynamics built in" (Press release)."Leichtbau ist nicht das Wichtigste" (in German).21 A kammback is a truncated boattail.Kieselbach, Stromlinienautos in Europa und USA, Kohlhammer, Stuttgart 1982, page 19 "Toyota Celica GT (1995.
The drag coefficient of a vehicle is affected by the shape of body of the vehicle.
"Chevy's new Impala provides a breath of fresh air".
In 2003, Car and Driver magazine adopted this metric as a more intuitive way to compare the aerodynamic efficiency of various automobiles.In order to achieve the lowest possible drag, air must flow around the streamlined body of the vehicle without coming into contact with any areas of possible turbulence.Flat spoilers, possibly angled slightly downward may reduce turbulence and thereby reduce the coefficient of drag."2010 Toyota Prius Product Information Toyota"."Toyota Echo 4-Door (2000.10 11 In order to decrease the impact that side mirrors have on teen sex finder the drag of the vehicle the side mirrors can be replaced with smaller mirrors or mirrors with a different shape."2001 Kia Rio Specifications - View New Kia Rio 2001 Specs Data at".22 Typical drag coefficients edit The average modern automobile achieves a drag coefficient of between.25 and.3.Fabrication edit The application of new parts and concepts onto the vehicle design are easier to include when in the design stage of a vehicle, rather than in aftermarket (automotive) parts, however, the fabrication of these parts assists in the streamlining of the vehicle and."Volkswagen Cabriolet MK1 Specs".Boattails and Kammbacks edit A boattail can greatly reduce a vehicle's total drag.7 Mud flaps edit Mudflaps are now rarely specified as standard on production cars as they interfere with the clean airflow around the vehicle.

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In most racing vehicles this is eliminated by covering the entire underside of the vehicle in what is called an under tray.
"Ford Escort ZX2 (1998.