We had our 2020 Palisade for about 2 months now and noticed that the suv vibrations slot on start up and at higher speeds. We took it to our locate Hyundai dealer where we bought it and they said it was known that the engines misfire. The kept the vehicle for a week and said it was fixed. As soon as we drove off the lot the vibrations could be felt. We called them back and the stated that we should put some miles on it and that will resolve the issue.