Methods and systems for controlling a host vehicle to mitigate rear-end collisions. One method includes automatically maintaining the host vehicle at least a predetermined following distance from a front vehicle traveling ahead of the host vehicle. The method also includes detecting a rear vehicle traveling behind the host vehicle and determining when the rear vehicle poses a rear-end collision risk with the host vehicle. In addition, the method includes automatically, by a controller, increasing a speed of the host vehicle when the rear vehicle poses a rear-end collision risk with the host vehicle, and automatically reducing the predetermined following distance to decrease a distance between the host vehicle and the front vehicle and increase a distance between the host vehicle and the rear vehicle when the rear vehicle poses a rear-end collision risk with the host vehicle.