For enhanced safety, the front and second-row seat shoulder belts of the Land Rover Defender have pretensioners to tighten the seatbelts and eliminate dangerous slack in the event of a collision and force limiters to limit the pressure the belts will exert on the passengers. The Jeep Wrangler doesn’t offer pretensioners for its rear seat belts.
Both the Defender 110/130 and Wrangler 4-door have child safety locks to prevent children from opening the rear doors. The Defender has power child safety locks, allowing the driver to activate and deactivate them from the driver's seat and to know when they're engaged. The Wrangler’s child locks have to be individually engaged at each rear door with a manual switch. The driver can’t know the status of the locks without opening the doors and checking them.
The Defender has standard head airbag curtains for front and middle row seats which act as a forgiving barrier between the driver and outboard passenger's upper bodies and the window and pillars. Combined with high-strength steel door beams and lower side airbags this system increases head protection in broadside collisions. The Wrangler doesn't offer side airbag protection for the head and are only available for the front seats.
The Defender’s lane departure warning system alerts a temporarily inattentive driver when the vehicle begins to leave its lane and gently nudges the vehicle back towards its lane. The Wrangler doesn’t offer a lane departure warning system.
The Defender has a standard 3D Surround Camera to allow the driver to see objects all around the vehicle on a screen. The Wrangler only offers a rear monitor and rear parking sensors that beep or flash a light. That doesn’t help with obstacles to the front or sides.
The Defender has a standard blind spot warning system that uses sensors to alert the driver to objects in the vehicle’s blind spots where the side view mirrors don’t reveal them and moves the vehicle back into its lane. A system to reveal vehicles in the Wrangler’s blind spot costs extra.
To help make backing out of a parking space safer, the Defender has standard Rear Traffic Monitor and Rear Traffic Braking automatically engages the brakes to help avoid a collision. Jeep charges extra for Rear Cross Path Detection on the Wrangler and the Wrangler’s Rear Cross Path Detection does not include automatic braking.
The Defender’s driver alert monitor detects an inattentive driver then sounds a warning and suggests a break. According to the NHTSA, drivers who fall asleep cause about 100,000 crashes and 1500 deaths a year. The Wrangler doesn’t offer a driver alert monitor.
For better protection of the passenger compartment, the Defender uses safety cell construction with a three-dimensional high-strength frame that surrounds the passenger compartment. It provides extra impact protection and a sturdy mounting location for door hardware and side impact beams. The Wrangler uses a body-on-frame design, which has no frame members above the floor of the vehicle.
Both the Defender and the Wrangler have standard driver and passenger frontal airbags, front side-impact airbags, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding and rearview cameras.

