With a winder sticker topping $40,000, we expected less noise from the 2007 Nissan Quest. There was noticeable road and tire noise, and a fair amount of wind noise around the windshield and door seams at high speeds. Hard Michelin run-flat tires exacerbated the problem. Most of the staff found it to be less than bothersome, though staffers who drove the Quest round-trip to Vegas would hardly concur. The 3.5-liter V6, which does not include silent operation among its many accolades, sounds and feels somewhat unrefined when pushed for power, but it's not raucous. One could compare the Quest's engine to a Ford V6, which has a similar grainy sensation, though the Nissan's six is more refined overall.