In other words , the government -- not you -- decides how many miles per gallon you need from your vehicle .
The aforementioned government agencies dictate the average fuel economy that an automaker 's fleet of models must maintain in order to avoid fines or prosecution .
The government -- not you -- decides how many miles per gallon you need from your vehicle .
The aforementioned government agencies dictate the average fuel economy that an automaker 's fleet of models must maintain in order to avoid fines or prosecution .