Quote:
Originally Posted by skepticman
They will not gain a few miles per gallon by shaving 100 pounds. The EPA says you will save 1-2% per 100 pounds:
http://www.fueleconomy.gov/feg/driveHabits.shtml
Weight is only one factor among many, including aerodynamics, rolling resistance, engine design, driving habits, and so on. |
Ah, that 1-2% would be for an engine of the same size. To overcome the weight issue, GM has to make more powerful and thirstier engines. So the issue is compounded. That's probably why the Cobalt has such a big engine.