My car is pretty simple, its nothing more than a chipped RS4...on e85. RS6 turbo's are K04's as well, and they make my kind of power on pump gas. Those are nothing more than chipped RS4's with bigger exhaust housings.
My car's oil change interval is 5000miles, and I do it somewhere between 3 and 4K miles just because it's making past more than stock power. So no way in hell will I go 10k miles, but if I had a B8, which has an interval of 15K, I'd be glad to go 10K miles on it.
The B5's problem now is that it's a $40K+ car, that can now be had by people working at BK. Shit's not going to get taken care of properly, and those people will bitch about it because it costs more money to maintain than the 83 corolla they had before it.