I have a 2019 Atlas and have been experiencing the same "grinding" noise when accelerating from a low gear. I had my dealership Service department look at and like many in this room, I was told that the noise was "normal". They said the noise was coming from the air intake. I'm not a car expert, but I have driven enough to know what a normal car noise is and this is not one of them. I don't know if the noise will eventually cause damage to the car or not, but either way, I know that when you buy a new car, it shouldn't make a sound that is distracting and embarrassing.