 I have owned this vehicle for over 2 years now and have had mo major problems.  The interior has some rattles that can be annoying, but the dealer will fix them.  The Bose stereo is garbage and the stereo display is minimal.  One from the 1980s displays more information.  My G35 just hit 28000 miles and I just now replaced the front tires. Rear tires are still original and are doing well. The throttle response is a bit slow and not immediate when you step on it.  It works better to have a slow and steady foot on the pedal. Other that that it is fun to drive every day.  Mileage stinks but I expect that for a car like this.  I didn't buy it thinking I would save at the pump.