Don't Know but the VQ 3.5 motor was on the Ward's list for 10 straight years... That's pretty consistent. And verified in my experience with my 3.5 VQ... 306,500 miles and no leaking or burning oil... Still runs awesome.
Originally Posted by javacontour
Best Engine by Wards doesn't mean it will be a durable engine. It just means it's interesting, ground breaking, or best from the perspective to cutting edge technology. It may be displacement, or efficiency or something like that. But I don't think durability has any consideration in the matter. Especially since the engines are often so new, there is no way to determine durability.