The BMW X5 xDrive45e has standard driver and front passenger side knee airbags mounted low on the dashboard. These airbags helps prevent the driver and front passenger from sliding under their seatbelts or the main frontal airbags; this keeps them better positioned during a collision for maximum protection. Knee airbags also help keep the legs from striking the dashboard, preventing knee and leg injuries in the case of a serious frontal collision. The Q8 doesn’t offer knee airbags.
Over 200 people are killed each year when backed over by motor vehicles. The X5 xDrive45e offers optional Active Park Distance Control that uses rear sensors to monitor and automatically apply the brakes to prevent a rear collision. The Q8 doesn’t offer backup collision prevention brakes.
The X5 xDrive45e’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 Q8 doesn’t offer a driver alert monitor.
Both the X5 xDrive45e and the Q8 have standard driver and passenger frontal airbags, front and rear side-impact airbags, side-impact head airbags, front seatbelt pretensioners, 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, rearview cameras, rear cross-path warning and available around view monitors.
The BMW X5 xDrive45e weighs 642 pounds more than the Audi Q8. The NHTSA advises that heavier vehicles are much safer in collisions than their significantly lighter counterparts.
The National Highway Traffic Safety Administration does side impact tests on new vehicles. In this test, which crashes the vehicle into a flat barrier at 38.5 MPH and into a post at 20 MPH, results indicate that the BMW X5 xDrive45e is safer than the Audi Q8:
|
X5 xDrive45e |
Q8 |
|
Front Seat |
|
STARS |
5 Stars |
5 Stars |
Chest Movement |
.6 inches |
.7 inches |
|
Rear Seat |
|
STARS |
5 Stars |
5 Stars |
HIC |
48 |
141 |
Spine Acceleration |
30 G’s |
43 G’s |
Hip Force |
584 lbs. |
684 lbs. |
|
Into Pole |
|
STARS |
5 Stars |
5 Stars |
Max Damage Depth |
14 inches |
15 inches |
Spine Acceleration |
44 G’s |
49 G’s |
New test not comparable to pre-2011 test results. More stars = Better. Lower test results = Better.
For its top level performance in IIHS driver and passenger-side small overlap frontal, moderate overlap frontal, side impact, roof strength and head restraint tests, its standard front crash prevention system, and its headlight’s “Good” rating, the Insurance Institute for Highway Safety grants the X5 xDrive45e its highest rating: “Top Safety Pick Plus” for 2019, a rating granted to only 122 vehicles tested by the IIHS. The Q8 is only a standard “Top Safety Pick” for 2019.