7. Audi Q7 Premium Plus: $110.09
The Audi Q7 Premium Plus suffers from the same fate as the other German vehicles on this list. Big gas tank, premium-only. It’s a bit more fuel friendly than the GL450 at 18 mpg combined, but all that means is that you’ll be filling the truck up a little less often. The Audi Q7 Premium Plus has a driving range of about 607 miles putting it right between the driving ranges of the GL450 and the Cayenne V6.