"and even they show that Nissans are much less reliable than the others."
But they have infinity ABOVE Toyota....
"Also, since someone brought up the J.D Power rankings, let me mention this: their "long-term" reliability ratings are based on the number of "problems" in three-year-old cars. I am not particularly convinced that how well a car holds up for three years is highly predictive of its long-term reliability."
The idea is to see where the cars are at when the warrenty begins to run out.
"Just as importantly, how useful are these rankings if they don't discriminate between different types of problems based on severity? For example, BMW's rating is not much worse than Toyota's...but if 60% of the "problems" with BMWs are serious engine problems, and 60% of the Toyota "problems" are, say, hatch rattles, it's obvious that J.D. Power's "long-term reliability ratings" don't mean much."
I agree with you on this.
What's the deal with everybody saying "too bad it isn't a skyline?" The Nissan Skyline in Japan is the Infinity G35 here. No, it's not a GT-R, but it is still a skyline.