Think about it this way.. Assuming maintenance costs are identical, what is your return on investment by spending the extra $2500 to get a 5 mpg difference.

Lets say you get 15 mpg on a 5.4 expy. At $2.89/gal that equates to $.19/mile. For the diesel lets say you get 20 mpg and I think diesel is slightly higher that gas so we'll use $3.09/gal, that's $.154/mile.

Now you paid an extra $2,500 for the diesel engine option, how long will it take to break even. Well, the difference is $.036/mile. That means you would have to drive 69,445 miles to break even. At 15,000 per year that's 4.63 years, almost the life of your loan if you fianance.

To me that's a long time to just break even! I only drive about 12,000 miles per year so that would take me to almost 6 years! They are going to have do give better incentives to make it worth while to buy one.

Think about it!

Mark