6. Dodge Dart: 1.4L (1,368 cc)
Dodge‘s new compact has an optional 1.4-liter engine, which is the same MultiAir engine as the Fiat 500 Abarth. This means it has the same 1,368cc engine that sports 160-hp. Dart’s equipped with this engine have a fuel economy rating of 27/39 mpg. This isn’t the most powerful engine available for the Dart lineup, but is so far the most fuel efficient option. None of the Dodge Dart models come standard with the 1.4L MultiAir engine, but it is available as a no-charge option on the $18,995 Dodge Dart Rallye and $20,190 Limited model.