I've got a V8 and I can't stand driving deisels, that's not to say they are useless, I just think they are the engine of satan and should be banned from the roads.
I get 15L / 100km, my old man in his TD5 gets 10L / 100km. His is better for towing and has more torque. But it sounds like crap and comes complete with a james bond smoke screen when he floors it.
There's probably a good reason why trucks are diesel, if petrol engines were cheaper to run and maintain they would use petrol engines.

