Why don t cars have dimples all over them to increase fuel economy like a golf ball

While dimples on golf balls reduce drag and increase lift, they would not have the same effect on cars.

Different flow regimes: Golf balls and cars experience different flow regimes. Cars travel at much higher speeds than golf balls, creating higher Reynolds numbers and a turbulent flow. Dimples are effective in the laminar flow regime, which is not relevant for cars.
Boundary layer thickness: The boundary layer around a car is much thicker than that around a golf ball. Dimples would not be effective in disrupting the boundary layer on a car.
Vehicle shape: Cars have complex, three-dimensional shapes, unlike the spherical shape of a golf ball. Dimples would need to be carefully designed and placed to have any effect, which would be challenging and impractical.

Instead, car manufacturers prioritize other fuel-saving measures, such as:

Aerodynamic design: Streamlined shapes reduce drag and improve fuel efficiency.
Rolling resistance reduction: Low-resistance tires reduce friction and improve mileage.
Efficient engines: Advanced engine technologies maximize fuel combustion for increased efficiency.

Are dimples ever used on vehicles? Yes, but not for fuel efficiency. Dimples have been used on Formula 1 cars to improve handling.
Why are golf balls dimpled? Dimples create turbulence, which reduces drag and increases lift, leading to greater distance and accuracy.
What other factors affect car fuel efficiency? Vehicle weight, engine size, and driving habits also impact fuel consumption.
How much fuel can be saved with dimples on a car? Dimples would not result in significant fuel savings for cars.
Why are cars not designed like airplanes to improve fuel efficiency? Airplanes have wings to generate lift, which is not necessary for cars. Cars also operate in different environments and require different design considerations.

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Why Don't Cars Have Dimples All Over Them to Increase Fuel Economy Like a Golf Ball?