there are a number of reasons to buy diesel most of the time they lie in better gas mileage full size trucks lk the turbodiesel f350 get 25 mpg while it's counterpart f350 gets lk 10-12 mpg and the turbodiesel has a better towing range so remember this when u need to get a trailor for ur civics that aren't street legal anymore diesel engines also last forever in the mercedes line i currently drive a 79 merceedes 300D and it has over 300,000 miles on it and starts up fine every day. the only two set backs for diesel is that the way they start up in the winter can be rough or won't even happen at all if u don't have it hooked up to electricity to keep it warm and they're slow unless you got a turbodiesel then they feel lk a normal car. Biodiesel is sold in Iowa for lk $4 a gallon thats what my neighbor told me so there is no reason to be scared about the oil crisis we can make biodiesel and put corn oil in our engines