I just drove to the airport in a rental car. I was given a Suzuki SX4 sedan. I am tall and did not expect to fit very well. I complained to the rental clerk that I have never fit well into Suzukis perviously. He was kind and asked that I try it first. To my surprise, I had ample leg room as the driver but no one would have been able to sit behind me, not even a child. However, the drivers seat was rather narrow and my hips hurt from driving the 90 miles to the airport.
The controls: shifter, wipers, cruise, radio and air/heater seemed ok to me. Nothing special but good enough to not be noticed. I did have a little bit of slow down going up a big pass. I was in the car alone with a large carry on bag and a backpack so not a lot of extra weight. Certainly not as much as say three adults would be.
For myself, I would probably not buy it. For someone that is not considered tall this would be a decent car for commuting (not up big hills), to run around with a couple little kids, or for an older couple.