At the same time, as Automotive News noted, before this report, the largest mileage discrepancies found by Consumer Reports were 7 and 6 mpg for the Prius c and regular Prius.
Citi Investment Research and my organization Ceres recently issued a report finding that, under the strictest mileage standard being considered, carmakers in general would increase their variable profits and the Detroit Three would get a bigger profit boost than others.
Looming in the background of this new report, of course, is the fact that the Hyundai and Kia brands raised suspicions about their mileage ratings across the board recently by falsifying the mileage figures for several models to nudge them above the perceptually crucial 40-mpg level.