Re: New 2016 Efficiencies?
EPA is a testing procedure applied by OEMs through either getting the vehicle tested on a Dynometer in a laboratory under set conditions or do tests at their own laboratory, or even none of this and instead applying an algorithm to a new vehicle that uses the same engine that was previously tested. For instance, let's say Jeep had the WK2 tested with the Pentastar and then made the Durango with the same engine - they likely didn't retest the Durango but determined what it's expected mpg based on the weight, drivetrain, and drag to name a few elements.
The EPA test loop is misleading as most people with gas engines don't get EPA except in the best cases whereas us diesel owners get EPA more often under average driving. They need to change EPA to give best and worse case findings (get ride of city / mix / hwy ratings). They also need to change the test to more accurately show how people normally drive.
'14 XV Crosstrek
#74 Exomotive Exocet NASA ST3 / E0
'14 WK2 EcoDiesel (replaces '07 WK CRD)