I am getting mileage numbers similar to those claimed on the sticker, even slightly better on flat, straight stretches. All the high-tech systems work flawlessly, including the active noise-cancellation, voice recognition and awesome touch-screen navigation system. The stereo sounds great. Power is more than adequate, even superior to the Lexus IS300 that this car is replacing. The electric motor doesn't seem to kick in on start-up acceleration, but rather on full-throttle passing and moderate hill climbing, but the mileage numbers don't lie. The regenerative braking and eco mode (using 3 of the 6 cylinders) is noticeable when driving but not distracting. Electic boost works seemlessly.
Active noise cancellation = quiet. Good interior space and design. Electronics work intuitively. XM radio. Navigation system is the best I've seen. Power and acceleration. Smooth ride.
Auto-dimming rear-view mirror needed, auto-on headlamps needed. Headlamps are weak, especially the high-beams. Seat memory would be nice. Nav. system should work with bluetooth phones.