2009 Chevrolet Cobalt XFE - First Drive - Motor Trend
"The XFE treatment is offered only with a manual transmission (all Cobalts for 2009 ordered with a 5M trans are XFEs -- it's not a stand-alone package)"
They seem to have simplified the options to one engine (turbo version excluded) and one manual tranny in 09 & 10. Maybe all 5 spds are not XFE due to not having LLR tires, but they have the same final drive ratio I believe.
First tank just over 41 mpg, plenty of room to improve.