Airplanes under 8gph?

[cocolos]

I am just curious what are some really efficient airplanes out there? Maybe something that does at least 110kts.

 

[Jim Logajan]

C150/152 with a tailwind?

I've gotten the airspeed indicator to exceed 110 kts in a C-152...

I eventually had to level out lest I collide with the ground. Also didn't like to see the RPM above redline for too long.

As to the OP - many of the sleeker LSAs can burn well under 8gph at 110kts+. (E.g. RV-12, Zenith CH-650, Arion Lightning, etc.)