Chrysler put out a press release a few days back that focused on Fiat earning another five percent of Chrysler, for meeting the last of three goals assigned by the Obama administration during the 2009 bailout. Downplayed within the release was the fact that the new Dodge Dart has achieved an “unadjusted” combined mileage rating of 40 mpg. If the Dart actually hit 40 mpg in combined fuel economy, the car wouldn’t be evolutionary, it would be revolutionary; as with everything else in business and politics these days, the math used in getting those numbers is somewhat fuzzy.
First, we’re no experts on the EPA’s test cycle, and how it’s used to calculate fuel economy. Those who know more than we do about this stuff say that the actual fuel economy numbers that will appear on the Dart’s window sticker are likely to be some 20 percent less. Twenty percent isn’t exactly a rounding error, although a combined fuel economy of 32 mpg is still impressive.
That said, don’t take the numbers on a window sticker as gospel. The new Chrysler 300 SRT8, for example, gets an EPA estimated 14 mpg around town and an estimated 23 mpg on the highway. Look closer and you’ll see that the “expected” range of city mpg varies from 11 to 17 mpg (a spread of nearly 55 percent) and the “expected” highway fuel economy can be anywhere from 19 to 27 mpg. (a spread of just over 42 percent).
It’s not even that simple, since flogging the SRT8 hard on a track day will yield mileage in the single digits, while a professional hypermiler could probably get 30 mpg out of the car under the right conditions. There’s a reason that the phrase, “your mileage may vary” has become part of our vocabulary.
We’re not meaning to downplay the new Dodge Dart, which may prove to be the most important car the automaker has ever built. We can’t wait to see it up close and personal, or better yet, get behind the wheel. Until then, we know enough not to believe everything we read in a press release (or on a window sticker).

Kurt Ernst has been passionate about automobiles and driving nearly his entire life. His early years were shaped working in the family service station, though his real passion was auto racing. After graduating from the University of Colorado, Kurt spent a year club racing with the Sports Car Club of America, before focusing on a business career in marketing and project management. Later, his passion for writing and the automotive hobby found him freelancing for a variety of automotive news sites, including Automotive Addicts and Motor Authority, where his work was syndicated and appeared in several national publications. Recognized as an expert in the automotive field, Kurt joined Hemmings Motor News as an Associate Editor in 2013, and in the years since has progressed to Editor, Hemmings Daily; Managing Editor for Hemmings Motor News, Hemmings Classic Car, Hemmings Muscle Machines, and the Hemmings Daily; and now, Managing Editor, Hemmings Auctions. Kurt was instrumental in organizing the Hemmings Motor News Concours d’Elegance from 2013-2019, and has served as a judge at this event and The Vintage Racing Stable Concours d’Elegance. A Skip Barber Racing School graduate and prolific writer, Ernst is also skilled in copyediting, project management, brand development, and public relations.