Full size trucks aren’t bad on gas anymore. The F-150 comes with a 2.7 litre turbocharged V6 base now, or you can upgrade to the 3.5L twin turbo V6 or 3.5L hybrid V6. Check your local dealers page, you won’t find many 1/2 ton trucks with V8s anymore. They also have aluminum bodies and a 4-door weighs about the same as a regular cab shortbed truck did 20 years ago. Is the truck in the pic significantly more useful than the Kei truck? Not really unless you need to tow with it, or need the cabin space or seating.