For enhanced safety, the front and rear seat shoulder belts of the Lexus NX have pretensioners to tighten the seatbelts and eliminate dangerous slack in the event of a collision. The Mazda CX-50 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 NX are reminded to check the back seat if they opened the rear door before starting out. The CX-50 doesn’t offer a back seat reminder.
With its standard Pre-Collision System with Pedestrian Detection, the Lexus NX is better at preventing collisions with pedestrians than the Mazda CX-50, according to the Insurance Institute for Highway Safety:
|
NX |
CX-50 |
Overall Evaluation |
GOOD |
ACCEPTABLE |
|
Crossing Child - DAY |
|
12 MPH |
AVOIDED |
AVOIDED |
25 MPH |
AVOIDED |
-23 MPH |
|
Crossing Adult - NIGHT |
|
12 MPH Brights |
AVOIDED |
-10 MPH |
12 MPH Low beams |
AVOIDED |
-11 MPH |
25 MPH Brights |
AVOIDED |
-14 MPH |
25 MPH Low beams |
AVOIDED |
-13 MPH |
|
Parallel Adult - NIGHT |
|
25 MPH Brights |
AVOIDED |
-19 MPH |
25 MPH Low beams |
AVOIDED |
-19 MPH |
37 MPH Brights |
AVOIDED |
-19 MPH |
Warning Issued-Brights |
2.4 sec |
1.5 sec |
37 MPH Low beams |
AVOIDED |
-14 MPH |
Warning Issued-Low beams |
2.4 sec |
1.4 sec |
When descending a steep, off-road slope, the NX’s standard Downhill Assist Control allows you to creep down safely. The CX-50 doesn’t offer Downhill Assist Control.
Both the NX and the CX-50 have standard driver and passenger frontal airbags, front side-impact airbags, driver and front passenger knee airbags, side-impact head airbags, height adjustable front shoulder belts, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, crash mitigating brakes, daytime running lights, lane departure warning systems, blind spot warning systems, rearview cameras, rear cross-path warning, driver alert monitors and available around view monitors.