The Lexus UX 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 Forester doesn’t offer a front passenger side knee airbag.
Using vehicle speed sensors and seat sensors, smart airbags in the UX deploy with different levels of force or don’t deploy at all to help better protect passengers of all sizes in different collisions. The UX’s side airbags will shut off if a child is leaning against the door. The Forester’s side airbags don’t have smart features and will always deploy full force.
The UX 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 Forester 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.
The UX has a standard blind spot warning system that uses sensors to alert the driver to objects in the vehicle’s blind spots where the side view mirrors don’t reveal them and moves the vehicle back into its lane. A system to reveal vehicles in the Forester’s blind spot costs extra.
To help make backing out of a parking space safer, the UX has standard Rear Cross-Traffic Alert, helping the driver avoid collisions. Subaru charges extra for Rear Cross Traffic Alert on the Forester and its not available on the Base.
Compared to metal, the UX’s plastic fuel tank can withstand harder, more intrusive impacts without leaking; this decreases the possibility of fire. The Subaru Forester has a metal gas tank.
Both the UX and the Forester 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, rearview cameras, available all wheel drive and rear parking sensors.
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 UX is safer than the Subaru Forester:
|
UX |
Forester |
|
Front Seat |
|
STARS |
5 Stars |
5 Stars |
HIC |
52 |
66 |
Hip Force |
323 lbs. |
389 lbs. |
|
Rear Seat |
|
STARS |
5 Stars |
5 Stars |
HIC |
96 |
246 |
Spine Acceleration |
46 G’s |
56 G’s |
Hip Force |
633 lbs. |
670 lbs. |
|
Into Pole |
|
STARS |
5 Stars |
5 Stars |
Max Damage Depth |
12 inches |
16 inches |
New test not comparable to pre-2011 test results. More stars = Better. Lower test results = Better.
Side impacts caused 23% of all road fatalities in 2018, down from 29% in 2003, when the Insurance Institute for Highway Safety introduced its side barrier test. In order to continue improving vehicle safety, the IIHS has started using a more severe side impact test: 37 MPH (up from 31 MPH), with a 4180-pound barrier (up from 3300 pounds). The results of this newly developed test demonstrates that the Lexus UX is safer than the Forester:
|
UX |
Forester |
Overall Evaluation |
GOOD |
ACCEPTABLE |
Structure |
GOOD |
ACCEPTABLE |
|
Driver Injury Measures |
|
Head/Neck |
GOOD |
GOOD |
Torso |
GOOD |
ACCEPTABLE |
Shoulder Deflection |
.83 in |
.91 in |
Torso Max Deflection |
1.02 in |
1.5 in |
Torso Deflection Rate |
7 MPH |
8 MPH |
Pelvis |
GOOD |
ACCEPTABLE |
Pelvis Force |
892 lbs. |
1071 lbs. |
Head Protection |
GOOD |
GOOD |
|
Passenger Injury Measures |
|
Head/Neck |
GOOD |
GOOD |
Head Injury Criterion |
150 |
544 |
Head Peak Forces |
no contact |
81 G’s |
Neck Compression |
67 lbs. |
290 lbs. |
Torso |
GOOD |
GOOD |
Shoulder Deflection |
1.69 in |
2.2 in |
Shoulder Force |
402 lbs. |
469 lbs. |
Torso Deflection Rate |
6 MPH |
8 MPH |
Head Protection |
GOOD |
MARGINAL |
Instrumented handling tests conducted by the National Highway Traffic Safety Administration and analysis of its dimensions indicate that the UX is 2.9% less likely to roll over than the Forester.
The Lexus UX achieved a “Top Safety Pick” rating from the Insurance Institute for Highway Safety (IIHS) for the 2024 model year. This recognition was based on its impressive performance in the small overlap frontal crash test, updated side impact crash test, headlight evaluations, and pedestrian crash prevention testing. The Forester last would have qualified as a “Top Safety Pick” in 2023.