The Challenger has standard Active Head Restraints, which use a specially designed headrest to protect the driver and front passenger from whiplash. During a rear-end collision, the Active Head Restraints system moves the headrests forward to prevent neck and spine injuries. The GT-R doesn’t offer a whiplash protection system.
The Challenger (except Redeye/Super Stock/Manual) offers an optional collision warning system, which detects an impending crash through forward mounted sensors and flashes a bright light and sounds a loud, distinctive tone to warn the driver to brake or maneuver immediately to avoid a collision. The system also pre-charges the brakes to begin deceleration more quickly. The GT-R doesn't offer a collision warning system.
The Challenger’s optional blind spot warning system uses sensors to alert the driver to objects in the vehicle’s blind spots where the side view mirrors don’t reveal them. The GT-R doesn’t offer a system to reveal objects in the driver’s blind spots.
To help make backing out of a parking space safer, the Challenger’s optional Rear Cross Path Detection uses sensors in the rear to alert the driver to vehicles approaching from the side, helping the driver avoid collisions. The GT-R doesn’t offer a rear cross-path warning system.
Both the Challenger and the GT-R have standard driver and passenger frontal airbags, front side-impact airbags, side-impact head airbags, front seatbelt pretensioners, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, daytime running lights, rearview cameras, available all wheel drive and rear parking sensors.

