Had the car for 6 months and driven it on two long journeys over 1000 miles each way, as well as commuting to work. Journeys averaged 25 mpg, commute in traffic usually get 29 or 30 mpg which is sensational for a vehicle this size. It's only let down by the plastic finish on some of the interior fittings. It's very strange as some features are wonderful like the soft leather seats and the soft interior roof lining. Contrast this with the plastic finish of the grab handles that rattle annoyingly. I'm sure Lexus will fix this on future versions. Overall though a great vehicle with good economy and pretty good performance overall.
Fuel economy, great external looks and very comfortable driving experience. Drives like a car.
Get rid of the cheap plastic interior parts, grab handles and center console. Change location of power outlets which are buried deep in the center console.