as i said, its a matter of choice and what you want it for. i guess you have a point and go with the V8 4.6 if you regularly pull a yacht, need to chase after cars over a 100 mph or just like to burn more gas...yes, though its not much of a difference, 2 mpg difference in my case would be (100 gallons per month, 1200 per year)....2400 less miles a year, or 150 more gallons ($350-$450). my needs are just to have a nice size SUV instead of a foreign compact car. I rarely pull anything and i live in low flat area. So, for all you V8 lovers, good for you, but some of us dont need all that power to get around town. (your nuts if you think theres no difference in mpg between a V6 and a V8).....