What is key is to compare there mileage over a year to other trucks they had over a year. I know that Motortrend published these when they had a Ram, F150 and the GM. I know that the year mileage was all in the 14 range.
We can all argue what real MPG is. It depends on driving habits, fuel type (how much ethanol), type of driving, elevation, etc.
I have been lucky to drive a new vehicle every 6 months, and put between 15k and 25k on during the 6 months. After multiple weeks of driving the same route to work, with similiar traffic, and similiar trips to athletic/extra curricular events, I can tell the difference in MPG! I can comment that the GM 4.3 V6 with AFM does a great job for MPG and towing. I averaged 4 mpg better then vehicles with the 5.3. I wish GM would have put the 4.3 in the new Colorado.
