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 and force limiters to limit the pressure the belts will exert on the passengers. The Mazda CX-5 doesn’t offer pretensioners for its rear seat belts.
The Lexus NX has a standard driver’s side knee airbag mounted low on the dashboard. The knee airbag helps prevent the driver from sliding under the seatbelts or the main frontal airbag; this keeps the driver better positioned during a collision for maximum protection. A knee airbag also helps keep the legs from striking the dashboard, preventing knee and leg injuries in the case of a serious frontal collision. The CX-5 doesn’t offer knee airbags.
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-5 which scored “Poor” - the lowest rating - 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-5 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-5 does not offer a rear camera washer, meaning its effectiveness relies on manual cleaning by the user when necessary.
Both the NX and CX-5 have rear cross-traffic warning, but the NX has Parking Support Brake (automatically applies the brakes) to better prevent a collision when backing near traffic. The CX-5’s Rear Cross Traffic Alert doesn’t automatically brake.
Compared to metal, the NX’s plastic fuel tank can withstand harder, more intrusive impacts without leaking; this decreases the possibility of fire. The Mazda CX-5 has a metal gas tank.
Both the NX and the CX-5 have standard driver and passenger frontal airbags, front side-impact 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 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 and into a post at 20 MPH, results indicate that the Lexus NX is safer than the Mazda CX-5:
|
|
NX |
CX-5 |
|
|
Front Seat |
|
| STARS |
5 Stars |
5 Stars |
| HIC |
43 |
81 |
| Chest Movement |
.5 inches |
.5 inches |
| Abdominal Force |
96 lbs. |
126 lbs. |
|
|
Rear Seat |
|
| STARS |
5 Stars |
5 Stars |
| HIC |
134 |
208 |
| Spine Acceleration |
47 G’s |
65 G’s |
|
|
Into Pole |
|
| STARS |
5 Stars |
5 Stars |
| HIC |
380 |
449 |
New test not comparable to pre-2011 test results. More stars = Better. Lower test results = Better.
The Lexus NX achieved a “Top Safety Pick” rating from the Insurance Institute for Highway Safety (IIHS) for the 2025 model year. This recognition was based on its impressive performance in the small overlap frontal crash test, updated moderate overlap front crash test, updated side impact crash test, headlight evaluations, and pedestrian crash prevention testing. The CX-5 has not yet been fully evaluated by the IIHS for 2025.

