For enhanced safety, the front and rear seat shoulder belts of the Volvo V90 Cross Country 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 Porsche Cayenne doesn’t offer pretensioners for its rear seat belts.
In the past twenty years hundreds of infants and young children have died after being left in vehicles, usually by accident. When turning the vehicle off, drivers of the V90 Cross Country are reminded to check the back seat if they opened the rear door before starting out. The Cayenne doesn’t offer a back seat reminder.
The Volvo V90 Cross Country offers optional built in child booster seats. They’re more crash worthy than an added child seat because of their direct attachment to the seat. Porsche doesn’t offer the convenience and security of a built-in child booster seat in the Cayenne. Their owners must carry a heavy booster seat in and out of the vehicle; V90 Cross Country owners can just fold their built-in child seat up or down.
The V90 Cross Country has a standard Whiplash Protection System (WHIPS), which use a specially designed headrest to protect the driver and front passenger from whiplash. During a rear-end collision, the WHIPS moves the headrests forward to prevent neck and spine injuries. At the same time the pretensioning seatbelts fire, removing slack from the belts. The Cayenne doesn’t offer a whiplash protection system.
Both the V90 Cross Country and the Cayenne have standard driver and passenger frontal airbags, front side-impact airbags, driver knee airbags, side-impact head airbags, height adjustable front shoulder belts, four-wheel antilock brakes, all wheel drive, traction control, electronic stability systems to prevent skidding, crash mitigating brakes, post-collision automatic braking systems, daytime running lights, lane departure warning systems, blind spot warning systems, around view monitors, rear cross-path warning and driver alert monitors.