I purchased a 2022 Hyundai Tucson Hybrid a couple of weeks ago and I'm having major issues with the mpg that I have been getting. I have drove the car using cruise control with the majority of the time being driven on the highway. I am getting around 30mpg and have tried both eco, smart, and sport modes and all have been horrible. Right now, I'm waiting for Hyundai to contact me (I can't believe it's going to take 7-10 days to speak to a case manager) and I have it parked with 800 miles (in case they can't fix it and need to exchange vehicles). My dealership says they can't do anything without an error code showing up. Has anybody else had this issue? The only odd thing that happened (out of the ordinary) was I went to a drive-in and couldn't figure how to turn off the running lights when parked (figured out later you had to put on the emergency brake for the lights to be completely off). I kept the car electrical system on (to listen to the radio) and it did die and I had to use the emergency jump button on the left side of the dash. Could that have caused an issue? I'm very frustrated since getting 38 mpg was the main reason I purchased this car.