Isuzu D-Max (Chevy Colorado) does 61 mpg?
Might actually be "Corral" material. Not that I don't trust the drivers who did it, and they claim to have driven normally...
It's just that I had to chuckle when I got to the part where they justified the figure. It went 1,985 kilometers on a full 76 liter tank. Not having been present there, myself, I can't say how the tank was filled on the first fill-up and how they verified results on the second.
Seems to me that you can fit a whole lot more than 76 liters in a standard "76 liter" tank. Just an extra dozen liters would bring that figure down to a more believable 50 mpg. I've driven the truck in question... 48 mpg is perfectly possible with normal driving at a piddling 40 mph.