Used 2023 Genesis G80 2.5T Advanced 3.5T Sport Prestige

This car is an unbelievable value. I have a 3.5L Twin Turbo with AWD and the Prestige package (I highly recommend the Prestige package due to the Heads Up display and several other luxury options included). The owners manual leaves a lot to be desired. It is hard to find explanations of the numerous features. Ride is smooth as silk, with windows closed a boom box next to my car is silent, acceleration is remarkable for a car as heavy as this. Gas mileage is terrible though. Around town, I get 16 mpg with a light foot. On the road, I get around 19 mpg. Wondering if there is something wrong with my fuel delivery system. Have not asked Genesis for valet pickup and drop-off of my car for service but based on comments in the G80 blog, dealers are reluctant to deliver on the promised service, not to mention they say loaner cars are not available. Highly recommend the vehicle. I get so many compliments on the looks and very few people have the vehicle so it really stands out. This is my fourth Genesis and it is my fourth pleasure to drive.