[aerohead]

Originally Posted by ennored

There's been a few folks with Metros/Swifts/Fireflies here. Anyone ever use the Aerodynamic & rolling resistance, power and MPG calculator for one? The base values look close, is that a Geo? Curious where 80 MPG @ 70 MPH puts the Cd.

If we can come up with a baseline at 70 mph,then,according to GM's old school relationship,any 10% drag reduction would equal a 6% mpg improvement at this speed.
We could reverse-engineer the Cd from that.