Yeah I was just wondering the same thing the other day actually. I've owned 2 Isuzu Pickup trucks in my life, one a 1987 and the other a 1995, funny thing is, the '87 got 29 mpg, while the '95 only gets 23. The '87 was a 4 speed, the '95 is a 5 speed, so I'd assume it should have gotten much better mileage. I don't have the answer, it's crazy, gas prices keep going up and fuel economy just gets worse or stays the same.