NHTSA Complaint #11528009 — 2020 HYUNDAI PALISADE

Car began giving us an issue while driving several months ago : driving up hills at a speed of 20 mph or less, the vehicle begins to jerk and pulse. There is also a knocking sound coming from the rear of the vehicle. Much of this also happens in parking lots at speeds of less than 10 mph. Driving at a speeds of greater than 60 mph / highway the car will pulse as well. This does not change with driving modes: ECO, Comfort, Sport or SMART mode. The engine is the same throughout modes- jerking and hesitating. When driving from highway to get gas or stop the car will have trouble when pressing on the gas pedal after being stopped then trying to enter the highway. The car is slow to respond to the gas pedal and will not accelerate matching your foot on the pedal. After some time the car will jerk forward and will not slow down when you take your foot off the gas. One incident in the past week I was pulling out into a 3 lane road, the car just stopped for no reason. Gas pedal down.. NOT moving. I was sitting in 3 lanes of oncoming traffic. I have reported this to my Hyundai Dealership. They are unable to locate the problem because NO codes pop up. They are unable to duplicate my problem when test driving. My concern is safety with having 3 children in the car and it just STOPS / lurches forward at a fast rate of speed. This happens on a daily basis. Unknown as to component or system failed or malfunctioned.. Yes available for inspection upon request.