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The bumpers on a car decrease MPG

  1. Sep 19, 2012 #1


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    I have thought about how the bumpers affects the performance of the available power in a car engine. The bumper applies friction to the suspension so the car doesn't jump off a bumpy road. However, that friction will be a sort of energy loss. The questions is: How much energy loss is it at a given car weight and suspension travel pr. time? By how much will that decrease MPG?

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  3. Sep 19, 2012 #2


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    Oh you mean the shock absorbers...


  4. Sep 19, 2012 #3


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    I think they absorb energy which would be lost anyway - just in other parts of the car. They can even reduce losses, if they keep the whole car from bumping around.
    If that energy can be extracted: Even better.
  5. Sep 19, 2012 #4


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