Hi everyone, new here. I just inherited my parents' 03 ES300 with 58K on the odo, and I've noticed that the MPG readout has been hovering around 15. My driving style is a bit "spirited", but not that spirited. The oil has been changed every 3 months, all schedule maintenance has been done on time, and I've tried both regular and premium--there seems to be no difference. Considering my Dad's Jeep Grand Cherokee (4000lbs and V8) gets 14.5, and that IIRC the Lexus' EPA ratings are 20/29, I'm disgusted by the fuel mileage. Has anyone else had this problem? What kind of fuel mileage do you all get? Are there any problem spots I should know about? Thanks!