Originally Posted by Wildsailor
It doesn't have just weight to do with the package but the tire width and the rolling resistance of the tire itself. Wider tires and softer compounds for higher grip tend to be higher rolling resistance and faster wear. Most high FE packages have skinny litle hard tires for improved rolling resistance.
All agreed, but the SFE's tire width, 215mm, is the same as the 16" and 17" alloys available on the Focus. And while the SFE uses, as I understand it, the ContiTouringContact instead of the ContiProContact, I don't believe the Touring tire is marketed as a low rolling resistance tire. At least the Cruze Eco goes with the Goodyear Assurance Fuel Max.