The Mazda 3 has standard Whiplash Reducing Headrests, which use a specially designed headrest to protect the driver and front passenger from whiplash. During a rear-end collision, the Whiplash Reducing Headrests system moves the headrests forward to prevent neck and spine injuries. The Sentra doesn’t offer a whiplash protection system.
With its standard Smart Brake Support, the Mazda 3 is better at preventing collisions with pedestrians than the Nissan Sentra, according to the Insurance Institute for Highway Safety:
|
Mazda 3 |
Sentra |
Overall Evaluation |
GOOD |
MARGINAL |
|
Crossing Child - DAY |
|
12 MPH |
AVOIDED |
AVOIDED |
25 MPH |
AVOIDED |
-8 MPH |
|
Crossing Adult - NIGHT |
|
12 MPH Brights |
AVOIDED |
AVOIDED |
12 MPH Low beams |
AVOIDED |
AVOIDED |
25 MPH Brights |
AVOIDED |
-8 MPH |
25 MPH Low beams |
AVOIDED |
-1 MPH |
|
Parallel Adult - NIGHT |
|
25 MPH Brights |
AVOIDED |
AVOIDED |
25 MPH Low beams |
AVOIDED |
-24 MPH |
37 MPH Brights |
AVOIDED |
-22 MPH |
Warning Issued-Brights |
2.4 sec |
1.9 sec |
37 MPH Low beams |
AVOIDED |
-4 MPH |
Warning Issued-Low beams |
1.7 sec |
.6 sec |
The Mazda 3 offers all-wheel drive to maximize traction under poor conditions, especially in ice and snow. The Sentra doesn’t offer all-wheel drive.
Both the Mazda 3 and Sentra have Rear Cross Traffic Alert, but the Mazda 3 Turbo Premium Plus has Rear Cross Traffic Braking (automatically applies the brakes) to better prevent a collision when backing near traffic. The Sentra’s Rear Cross Traffic Alert doesn’t automatically brake.
Both the Mazda 3 and the Sentra have standard driver and passenger frontal airbags, front and rear side-impact airbags, driver and front passenger knee airbags, side-impact head airbags, front and rear seatbelt pretensioners, front wheel drive, height adjustable front shoulder belts, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, crash mitigating brakes, 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 35 MPH front crash tests on new vehicles. In this test, results indicate that the Mazda 3 is safer than the Nissan Sentra:
|
Mazda 3 |
Sentra |
OVERALL STARS |
5 Stars |
4 Stars |
|
Driver |
|
STARS |
5 Stars |
5 Stars |
HIC |
89 |
292 |
Neck Injury Risk |
17% |
29% |
Neck Stress |
214 lbs. |
351 lbs. |
Neck Compression |
27 lbs. |
87 lbs. |
Leg Forces (l/r) |
205/212 lbs. |
330/261 lbs. |
|
Passenger |
|
STARS |
5 Stars |
3 Stars |
HIC |
153 |
495 |
Chest Compression |
.4 inches |
.6 inches |
Neck Injury Risk |
30% |
53% |
Neck Stress |
191 lbs. |
296 lbs. |
Neck Compression |
20 lbs. |
93 lbs. |
Leg Forces (l/r) |
178/201 lbs. |
318/391 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 Mazda 3 is safer than the Nissan Sentra:
|
Mazda 3 |
Sentra |
|
Front Seat |
|
STARS |
5 Stars |
5 Stars |
HIC |
112 |
162 |
Chest Movement |
.9 inches |
1.1 inches |
Hip Force |
239 lbs. |
422 lbs. |
|
Into Pole |
|
STARS |
5 Stars |
5 Stars |
Max Damage Depth |
10 inches |
12 inches |
Spine Acceleration |
30 G’s |
36 G’s |
Hip Force |
527 lbs. |
660 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 Mazda 3 Sedan is safer than the Sentra:
|
Mazda 3 |
Sentra |
Overall Evaluation |
GOOD |
ACCEPTABLE |
Structure |
ACCEPTABLE |
ACCEPTABLE |
|
Driver Injury Measures |
|
Head/Neck |
GOOD |
GOOD |
Head Injury Criterion |
122 |
387 |
Head Peak Forces |
no contact |
84 G’s |
Neck Tension |
245 lbs. |
379 lbs. |
Torso |
ACCEPTABLE |
ACCEPTABLE |
Pelvis |
ACCEPTABLE |
ACCEPTABLE |
Pelvis Force |
1004 lbs. |
1071 lbs. |
Head Protection |
GOOD |
MARGINAL |
|
Passenger Injury Measures |
|
Head/Neck |
GOOD |
GOOD |
Head Injury Criterion |
156 |
182 |
Neck Tension |
112 lbs. |
178 lbs. |
Neck Compression |
22 lbs. |
112 lbs. |
Torso |
GOOD |
GOOD |
Shoulder Deflection |
.87 in |
1.1 in |
Shoulder Force |
268 lbs. |
290 lbs. |
Pelvis |
GOOD |
GOOD |
Pelvis Force |
335 lbs. |
848 lbs. |
Head Protection |
GOOD |
GOOD |
The Mazda 3 has achieved the Insurance Institute for Highway Safety’s (IIHS) highest rating of “Top Safety Pick Plus” for the 2024 model year. This distinction is based on its exceptional performance in IIHS’ rigorous battery of safety tests. Specifically, it earned a “Good” rating in the latest, more stringent moderate overlap front crash test, a “Good” result in the updated side impact test, and a “Good” score in the revised pedestrian crash prevention test. The Sentra is not even a standard “Top Safety Pick” for 2024.