Guys, a 3.18:1 may not get the gas mileage a 3.44:1 does. Note I said may. My reasoning is, the motor may not have the HP to push the car fast enuff at a lower throttle setting that would equate to the same speed with the 3.44:1. Now for an example, my Honda SL-90 with stock gearing of 14:56, that is a 14 tooth counter shaft sprocket out of the tranny to a 56 tooth rear wheel sprocket got a top speed of 55 MPH on a flat road. The same bike with a 13:70 a week later got 70 MPH. The lower gearing got the engine to turn higher RPM which put it closer to the power band for more HP, thus the power to overcome wind resistance and went faster. I hope I explained it well enuff to understand. 