Comment Re:They're obsolete. (Score 1) 217
It also can depend on the gear ratios in the transmission. The 5-speed manual version of my car has a higher gear ratio for 5th gear compared to the final gear ratio in the 4-speed automatic. As such, on the freeway the RPMs are higher in the manual version and that negatively impacts the mileage. I'm assuming the reason is a combination of the manufacturer selecting closer gear ratios for the manual for the fun factor, and attempting to make it so people wouldn't have to downshift to pass on the freeway.