I drove mine a lot more I think. I am at 1200 miles after 2 weeks. It is slowly creeping up but it has been at 22 for awhile now. I have also notice normal drive seems to get better MPG on the highway than Eco.Kind of too early to tell for me, in part because I only just burned through the first half a tank from when I picked it up. It started with single digits on the trip computer and I eeked it up to 18.3 on a heavily biased city driving and some highway up to around similar velocities. ~19x miles and 10.x something gallons of gasoline hand calculated out to closer to the 18.5 or within 0.5 of the combined rating on my window sticker. So seems pretty much dead on so far, that did also include one day in 4A due to the weather. Hopefully the next tanks will show improvement as it breaks in, but it's really not that far behind the real world mileage I'm seeing in similar driving on our 2017 2.0L Ecoboost Escape, within 20% margin of error as that was only seeing low 20s with a similar city bias. Though pure highway, especially sticking closer to 70 on that can get closer to 30 or nearly 50% better than the Bronco is rated for on the highway on longer trips.
TLR, survey says maybe.
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