I am half way through our first long trip with my UX - covered about 800 miles so far - mixture of fast motorway from Surrey to Lake District tootling around the Lakes then another run to Snowdonia and a few days tootling around this area.
Overall have been very pleased -averaging almost 47mpg - very comfortable ride - good handling - adequate power for overtaking etc.
However a few niggles some of which have been covered before -
The SatNav is awful - a £70 TomTom works better. The mapping is very poor and the contrast awful to the extent that sometimes when on minor roads you can hardly see them. Imputing destinations is laborious and it occasionally takes the most strange routing.
The auto tailgate seems to have a mind of its own - sometimes opens with a beep other times just opens without. Sometimes will not open with the touch buttons without a lot of fiddling and as for the hands free opening with a foot movement that also has a mind of its own or maybe it doesn't which is why it invariably does not work!
One thing that I miss is a Speed Limiter built in to the cruise control - cruise itself works fine but having a limiter for use in built up areas was a feature I used extensively on my previous vehicles and probably has saved a few points on the licence!
I'm probably being over picky with some of the above but after years with various Mercedes, Audi and BMW products my first experience of Lexus is overall very positive and I do not regret my purchase at all.
John