FCA has the highest percentage of hybrids but the lowest fleet mpg: Why?

eTorque system in 2019 Ram 1500In 2019, Fiat Chrysler sold more a higher percentage of hybrid vehicles, of its total sales, than Toyota. And yet for the eighth straight year, FCA is anticipated to post the lowest U.S. fleet fuel economy among vehicle makers. That comes from the 2019 EPA Automotive Trends Report, released earlier this month by the U.S. EPA with preliminary...