The hill assist feature is available in selected models of
Hyundai Elantra - SX 2.0 MT, SX 1.5 MT, SX 2.0 AT, SX (O) 2.0 AT, SX (O) 1.5 AT.
Once you have stopped on the upward slope, the hill assist tech assists the car from rolling back when you release the brakes.