This is quite possibly the best all wheel drive value in the world. I have put 17,000 miles on this car and its been great. Things I really like about the car include:
Performance- The 280 hp engine is much more than adequate to move this car.
Braking- This car has stooped faster than I ever expected on more than one occasion.
Low Maintenance- The car lives up to its reputation of not having any problems.
4 Wheel Dive- The system works great. I live on a steep hill and have had problems getting up this hill with heavy front-wheel drive cars with snow tires. But the G35X pulls right up those some hill.
Value- For $30- $31K This car is much nicer than anything comparable in the $25 - $30K range. While the car may not handle quite as well as a comparable BMW, that comparable vehicle will run you $40K.
The only areas to improve would be the interior ergonomics. The controls while functional are not intuitive.