RE: 40 MPG? Should We Be Skeptical?
The Dart Aero is slated to be rated at 41mpg hwy per the EPA. Not all the Dart configurations are on the fueleconomy.gov website.
That aside, you can achieve well over 40mpg in the new Dart. How do I know this? I have an eclipse rated at 30mpg highway, and I've driven 684 miles on 14 gallons. You do the math. You wont have to work nearly as hard in the Dart to achieve 40mpg, but it's mostly how you drive. Cruise control in the 39mpg rated Dart at 55mph should net you 46+mpg on the highway.