The Legacy has standard Whiplash-Reducing Front Seats, which use a specially designed seat to protect the driver and front passenger from whiplash. During a rear-end collision, the Whiplash-Reducing Front Seats system allows the backrest to travel backwards to cushion the occupants and the headrests move forward to prevent neck and spine injuries. The Altima doesn’t offer a whiplash protection system.
To provide maximum traction and stability on all roads, All-Wheel Drive is standard on the Legacy. But it costs extra on the Altima.
Both the Legacy and the Altima 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 blind spot warning systems, rear parking sensors, rear cross-path warning and driver alert monitors.
The National Highway Traffic Safety Administration does 35 MPH front crash tests on new vehicles. In this test, results indicate that the Subaru Legacy is safer than the Nissan Altima:
|
Legacy |
Altima |
OVERALL STARS |
5 Stars |
4 Stars |
|
Driver |
|
STARS |
5 Stars |
5 Stars |
HIC |
158 |
171 |
Neck Injury Risk |
26% |
30% |
Neck Stress |
281 lbs. |
343 lbs. |
Neck Compression |
57 lbs. |
78 lbs. |
|
Passenger |
|
STARS |
4 Stars |
4 Stars |
Neck Injury Risk |
43% |
54% |
Neck Stress |
147 lbs. |
280 lbs. |
Neck Compression |
51 lbs. |
110 lbs. |
Leg Forces (l/r) |
161/137 lbs. |
260/280 lbs. |
New test not comparable to pre-2011 test results. More stars = Better. Lower test results = Better.
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 Subaru Legacy is safer than the Nissan Altima:
|
Legacy |
Altima |
|
Front Seat |
|
STARS |
5 Stars |
4 Stars |
HIC |
50 |
187 |
Chest Movement |
.7 inches |
1.4 inches |
Hip Force |
335 lbs. |
511 lbs. |
|
Into Pole |
|
STARS |
5 Stars |
5 Stars |
Max Damage Depth |
14 inches |
16 inches |
HIC |
104 |
157 |
Spine Acceleration |
38 G’s |
42 G’s |
Hip Force |
681 lbs. |
769 lbs. |
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 Subaru Legacy is much safer than the Altima:
|
Legacy |
Altima |
Overall Evaluation |
ACCEPTABLE |
POOR |
Structure |
ACCEPTABLE |
POOR |
|
Driver Injury Measures |
|
Head/Neck |
GOOD |
MARGINAL |
Head Injury Criterion |
71 |
562 |
Head Peak Forces |
no contact |
109 G’s |
Neck Tension |
67 lbs. |
625 lbs. |
Torso |
ACCEPTABLE |
POOR |
Shoulder Deflection |
1.14 in |
2.09 in |
Shoulder Force |
379 lbs. |
402 lbs. |
Torso Max Deflection |
1.42 in |
2.2 in |
Torso Deflection Rate |
10 MPH |
11 MPH |
Pelvis |
ACCEPTABLE |
POOR |
Pelvis Force |
1026 lbs. |
1339 lbs. |
Head Protection |
GOOD |
MARGINAL |
|
Passenger Injury Measures |
|
Head/Neck |
GOOD |
GOOD |
Neck Tension |
67 lbs. |
201 lbs. |
Torso |
GOOD |
GOOD |
Torso Deflection Rate |
7 MPH |
7 MPH |
Head Protection |
GOOD |
GOOD |
For its performance in IIHS driver-side and passenger-side small overlap frontal, moderate overlap frontal, updated side impact, headlight, and daytime pedestrian crash prevention testing, the Insurance Institute for Highway Safety grants the Legacy the rating of “Top Safety Pick” for 2023, a rating granted to only 98 vehicles tested by the IIHS. The Altima last would have qualified as a “Top Safety Pick” in 2022.