It is the base E Class in the American market. Americans don't drive <150 HP manual cars and would never buy them. Those are the only versions of cars that get substantially better gas mileage then the versions of cars that Americans typically drive.

The fact that Mercedes (a luxury car manufacturer) choose not to import their smaller engines to the US doesn't mean you can't get smaller engines. Subaru outback, kia niro, even a volvo v60 or audi a4 come with efficient 2l engines if you absolutely want luxury

Did you not read the link I posted in my first comment in this chain? Two of the cars in the fuel economy comparison are the Subaru Outback and the Volvo V60. The most efficient Outback has 29 mpg (26/33) and the most efficient F150 has 25 mpg (25/26). Almost identical in city, and in the same ballpark for highway. Numbers are similar for the Audi A4 Allroad (though you'll have the same concern as the E-Class as only the higher worldwide trims are available) and for the V60.

Ah sorry I’m on mobile, didn’t see the horizontal scrolling!

It’s crazy that the choice is so limited in the US. I can understand why the Prius was so popular with you guys, despite handling like a whale on wheels.. there are nearly no options in the big hatchback segment .