from press release:
All-new 2015 Ford Transit low- and medium-roof regular-wheelbase wagons with available 3.5-liter EcoBoostŪ have a 46 percent better EPA-estimated highway fuel economy rating* than Ford E-Series with premium gas engine
Ford is projecting up to a 46% improvement over the previous premium engine. The key word is that the engine which it is being compared to is a premium engine, not the standard 4.6 liter v8, etc. I would like to know what to expect in the new Transit, equipped with its standard 3.7, or with the optional 3.5 EcoBoost motor.