Hmm, I know I'm comparing Grand Cherokees here, but this is what fueleconomy.gov shows for annual fuel costs:
$2,500 = EcoDiesel
$3,450 = Hemi, using Regular gas
$3,600 = Hemi, using Midgrade gas (Jeep recommended)
That's based on driving 15K miles a year,
55% of those miles being...