Had the opportunity to test drive the NX 350h today. Should have been the 450h+ however a last minute change of plan resulted in the 350h arriving which allowed comparison with my 300h. It was the Takumi model and I have got to say that I am hugely impressed and its a giant leap forward in comparison to the 300h (which I think is a fantastic car). The overall appearance is distinctly Lexus but it's the interior which gives the wow factor. The dashboard is extremely driver friendly and the touchscreen very responsive. The HUD is very clear. The ride is noticeably smoother than the 300h, acceleration swifter, noise levels unobtrusive and the car feels very well built and sure footed. Fit and finish is superb - as you would expect in a Lexus - (including the centre console which has been mentioned previously as a potential problem area!). Tailgate opening/closing speed is much quicker.
Test route was a mix of motorway, town and country and the car displayed over 41mpg.
Think Lexus are onto a winner here and I look forward to a test drive of the 450h+.