In a Vehicle-to-Vehicle Frontal Crash Prevention 2.0 test conducted by the Insurance Institute for Highway Safety (IIHS), the Lexus NX achieved a “Good” rating - the highest possible - in forward collision warning and automatic braking systems, outperforming the Mazda CX-50 which scored only an “Acceptable” in these critical safety features.
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.
The Lexus NX’s rear backup camera has a standard washer for maintaining a clear view under various conditions. In contrast, the Mazda CX-50 does not offer a rear camera washer, meaning its effectiveness relies on manual cleaning by the user when necessary.
To help make backing out of a parking space safer, the NX has standard Rear Cross-Traffic Alert with Parking Support Brake, systems which detect vehicles approaching from the sides and can automatically apply the brakes to prevent a collision. Only the CX-50 Turbo Premium Plus offers Rear Cross Traffic Braking.
Both the NX and the CX-50 have standard driver and passenger frontal airbags, front side-impact airbags, driver knee airbags, side-impact head airbags, front and rear seatbelt pretensioners, 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.
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, results indicate that the Lexus NX is safer than the Mazda CX-50:
|
|
NX |
CX-50 |
|
|
Front Seat |
|
| STARS |
5 Stars |
5 Stars |
| Chest Movement |
.5 inches |
.7 inches |
| Abdominal Force |
96 lbs. |
144 lbs. |
New test not comparable to pre-2011 test results. More stars = Better. Lower test results = Better.

