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Internal combustion engine V Human Body in The AnswerBank: Science
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Internal combustion engine V Human Body

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retrochoir | 12:55 Fri 27th Apr 2007 | Science
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Just out of interest, can anyone tell me now many miles to the gallon my car would do if it was as energy efficient as my body?
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Surely not. I'snt the human body far more efficient that the internal combustion engine?

This is a general so i am looking for MPG of an average car compared to an average human body.
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If both were going around 15mph and assuming both are running along a flat then in theory the human body is doing about 1000 MPG, although if you're sitting down then this drops to roughly 300 MPG since your body takes quite a lot of energy just to exist.

SInce your average car does say 40MPG urban, at 15mph it'll be doing I guess about 25MPG vs the 1000 for the human.

That is assuming this site is correct (you think I worked all this out? :)).

http://www.eating2.com/index.asp?ID=2

Ain't the internet amazing!
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So the human body is 40 times more efficient than the Internal Combustion Engine. That's pretty impressive.

So, the other way round - if my car was as efficient as me then it would do about 1,600mpg (40mpg x 40). I think (I might be wrong).

If only!

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