https://www.toyota.com/avalon/compare/avalon-vs-lacrosse -The Avalon has regular Whiplash Injury Lessening Chairs, which utilize a specially designed chair to safeguard the driver and front passenger from whiplash. During a rear-end crash, then the WIL system allows the backrest to journey backward to cushion the occupants and the headrests move forward to reduce spine and neck injuries. avalon vs lacrosse 2019 doesn't provide a whiplash protection strategy.