I was curious if their fuel efficiency is really that low. I've only been interested in smaller SUVs (I've got a Honda CR-V) which are up to around 28 mpg city, 34 highway for current models.
So I went to Ford's site to check. On the page for the Explorer  I can't find fuel efficiency info! Searching for "mpg" on the page (or on the pages for specific models) shows hits but Firefox does not actually show them. Disabling styles and doing again finds that those mentions are just in standard disclaimer footnotes.
Even more interesting is this page , which lists all Ford SUVs and crossovers. All of the gas powered ones (Ecosport, Escape, Edge, Expedition, and Flex) except for Explorer list their fuel efficiency right there.
Ford seems to be specifically avoiding listing Explorer gas mileage. Expedition is 17/24 city/highway and Flex is 16/23, so it's not like they are unwilling to list low numbers. So what is going on with Explorer?