 Just turned 20,000 miles, and now get a consistent   28 mpg around town (not towing anything).  Highway mileage totally depends on average speed: taking it easy, can get 29 mpg; 75-85 mph takes it down to 23mpg.  However, after owning three Prius's, the POWER of the Highlander Hybrid is amazing.  I've beat V8 powered vehicles off-the- line; much to their amazement.  What they don't know is that with a full state of charge, the hybrid version can kick over 60 extra horsepower to the two additional traction motors, while the engine stays at the peak of it's horsepower curve. Also, in Arizona, the electric powered air conditioning runs at full effiiciency all the time; even stopped