I ordered the V10 gas. On Beautiful Orcas Island (21 miles across) Diesel is $1 more than gas per gallon, my trips are never longer than 15 miles from my office, the heater is blowing warm by the time I get to the end of my driveway, the diesel was $9,000 more than the V10, I run a repair shop & we are constantly seeing egr & emissions/coking up with other diesels on my island as they don't get run hard or for long periods of time, so gas:). Love it other than an average of 7mpg but our top speed limit here is also only 40mph. I did have the Miller chassis speced with a 350lb counterweight behind the front bumper to keep the front axle on the ground.