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Old 11-12-2010, 12:41 AM   #24 (permalink)
RobertSmalls
Left Lane Ecodriver
 
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Join Date: Aug 2008
Location: Buffalo, NY, USA
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Prius C - '12 Toyota Prius C
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Quote:
Originally Posted by Dr. Jerryrigger View Post
Thanks for the write up.
Theoretically, if your on level ground, with predictable losses, starting from 55mph, with a 100%efficient engine and drive train; you should see no difference.
Not true. In theory (and in practice) rolling resistance is proportional to vehicle weight. The question is whether the improvement in engine efficiency from easier P&G outweighs the increased rolling resistance. For most, the answer is no.
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