Recently I received my LS 600h with hybrid, after I was assured when I bought it, thanks to hybrid this would consume significantly less. I alternately drive city + highway without squeaky tires but rarely come under 17 liters. My brother has a Mercedes S55AMG and this consumes only 14 liters without hybrid. Was that just a bad advertising gag of Lexus? I would like to give back the car. Does anyone else have experience??? Greeting Theodor