For enhanced safety, the front and rear seat shoulder belts of the Lexus RX 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 Jeep Grand Cherokee doesn’t offer pretensioners for its rear seat belts.
With its standard Pre-Collision System with Pedestrian Detection, the Lexus RX is better at preventing collisions with pedestrians than the Jeep Grand Cherokee, according to the Insurance Institute for Highway Safety:
|
RX |
Grand Cherokee |
Overall Evaluation |
GOOD |
ACCEPTABLE |
|
Crossing Child - DAY |
|
12 MPH |
AVOIDED |
AVOIDED |
25 MPH |
AVOIDED |
-11 MPH |
|
Crossing Adult - NIGHT |
|
12 MPH Brights |
AVOIDED |
AVOIDED |
12 MPH Low beams |
AVOIDED |
AVOIDED |
25 MPH Brights |
AVOIDED |
AVOIDED |
25 MPH Low beams |
AVOIDED |
AVOIDED |
|
Parallel Adult - NIGHT |
|
25 MPH Brights |
AVOIDED |
AVOIDED |
25 MPH Low beams |
AVOIDED |
AVOIDED |
37 MPH Brights |
AVOIDED |
-33 MPH |
Warning Issued-Brights |
2.5 sec |
2 sec |
37 MPH Low beams |
-32 MPH |
-28 MPH |
The RX has a standard Secondary Collision Brake, which automatically applies the brakes in the event of a crash to help prevent secondary collisions and prevent further injuries. The Grand Cherokee doesn’t offer a post collision braking system: in the event of a collision that triggers the airbags, more collisions are possible without the protection of airbags that may have already deployed.
To deliver safety and visibility under dusty conditions the Lexus RX’s backup monitor has a standard rear washer to keep the view clear. A camera washer system costs extra on the Jeep Grand Cherokee.
Both the RX and Grand Cherokee have rear cross-traffic warning, but the RX has Parking Support Brake (automatically applies the brakes) to better prevent a collision when backing near traffic. The Grand Cherokee’s Rear Cross Path Detection doesn’t automatically brake.
Both the RX and the Grand Cherokee 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, available all wheel drive and 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 RX is safer than the Jeep Grand Cherokee:
|
RX |
Grand Cherokee |
|
Front Seat |
|
STARS |
5 Stars |
5 Stars |
HIC |
58 |
87 |
Chest Movement |
.3 inches |
.8 inches |
Abdominal Force |
99 lbs. |
192 lbs. |
Hip Force |
206 lbs. |
235 lbs. |
|
Rear Seat |
|
STARS |
5 Stars |
5 Stars |
HIC |
63 |
164 |
|
Into Pole |
|
STARS |
5 Stars |
5 Stars |
HIC |
317 |
458 |
New test not comparable to pre-2011 test results. More stars = Better. Lower test results = Better.
Instrumented handling tests conducted by the National Highway Traffic Safety Administration and analysis of its dimensions indicate that the RX is 1% to 3.6% less likely to roll over than the Grand Cherokee.