Quote:
Originally Posted by Old Tele man
(MPG2 / MPG1) = (WT1 / WT2)^(0.72)
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If this applies to weight of the car at the design level, it includes an upsized engine as well. So 3000lb becomes 4000lb, 26mpg becomes 21mpg, your 2.2L becomes a 3.0L, and the car is no peppier.