I guess it just depends on how tall you are and how much you weigh, obviously a smaller person will find the Q3 to be sufficient. But at what point it becomes a deal breaker is what needs to be discovered.
One of my favorite things about the Q3 is the driving position. It's so much better than my 2008 Accord V6 where I had to practically sit on top of the steering wheel to reach the peddles. My Q3 fits my ~5'6" frame well, and my 5'10" husband is comfy too. I don't feel too cramped or too close, just right.