If one knows how to drive, neither do too terrible on gas consdering.

When I towed a parts 3000GT VR4 with the GC I managed over 17mpg with an empty two dolly, and 15 mpg loaded towing through the mountains on I-68. That was with the 5.2.

I borrowed my brothers XJ Cherokee to tow a friends NA Stealth that lost a transmission on the PA turnpike once. I got 17mpg towing, and 20 mpg with an empty dolly. His Jeep is lifted and running 33's too.