The X5’s pre-crash front seatbelts will tighten automatically in the event the vehicle detects an impending crash, improving protection against injury significantly. The Nautilus doesn’t offer pre-crash pretensioners.
The X5 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 Nautilus doesn’t offer a whiplash protection system.
Over 200 people are killed each year when backed over by motor vehicles. The X5 offers an optional Active Park Distance Control that uses rear sensors to monitor for objects to the rear and automatically applies the brakes to prevent a collision. The Nautilus doesn’t offer backup collision prevention brakes.
Both the X5 and Nautilus have rear cross-traffic warning, but the X5 has Cross Traffic Warning with Braking (automatically applies the brakes) to better prevent a collision when backing near traffic. The Nautilus’ Cross-Traffic Alert doesn’t automatically brake.
The X5’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 Nautilus doesn’t offer a driver alert monitor.
Both the X5 and the Nautilus have standard driver and passenger frontal airbags, front side-impact airbags, driver and front passenger knee airbags, side-impact head airbags, front seatbelt pretensioners, plastic fuel tanks, four-wheel antilock brakes, 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, rearview cameras, rear cross-path warning and available all wheel drive.
Side impacts caused 23% of all road fatalities in 2018, down from 29% in 2003, when the Insurance Institute for Highway Safety introduced its side barrier test. In order to continue improving vehicle safety, the IIHS has started using a more severe side impact test: 37 MPH (up from 31 MPH), with a 4180-pound barrier (up from 3300 pounds). The results of this newly developed test demonstrates that the BMW X5 is safer than the Nautilus:
|
X5 |
Nautilus |
Overall Evaluation |
GOOD |
GOOD |
Structure |
GOOD |
GOOD |
|
Driver Injury Measures |
|
Head/Neck |
GOOD |
GOOD |
Head Injury Criterion |
35 |
208 |
Neck Tension |
134 lbs. |
402 lbs. |
Torso |
GOOD |
GOOD |
Shoulder Deflection |
.47 in |
.87 in |
Shoulder Force |
112 lbs. |
268 lbs. |
Torso Max Deflection |
.83 in |
1.1 in |
Torso Deflection Rate |
4 MPH |
6 MPH |
Pelvis |
GOOD |
MARGINAL |
Pelvis Force |
647 lbs. |
1160 lbs. |
Head Protection |
GOOD |
GOOD |
|
Passenger Injury Measures |
|
Head/Neck |
GOOD |
GOOD |
Head Injury Criterion |
36 |
260 |
Neck Tension |
45 lbs. |
156 lbs. |
Torso |
GOOD |
ACCEPTABLE |
Shoulder Deflection |
.24 in |
1.5 in |
Shoulder Force |
89 lbs. |
424 lbs. |
Torso Max Deflection |
.63 in |
1.57 in |
Torso Deflection Rate |
4 MPH |
11 MPH |
Pelvis |
GOOD |
GOOD |
Head Protection |
GOOD |
GOOD |
The BMW X5 achieved a “Top Safety Pick” rating from the Insurance Institute for Highway Safety (IIHS) for the 2024 model year. This recognition was based on its impressive performance in the small overlap frontal crash test, updated side impact crash test, headlight evaluations, and pedestrian crash prevention testing. The Nautilus has not yet been fully evaluated by the IIHS for 2024.