Small overlap front
The small overlap front evaluation consists of a driver-side and a passenger-side component. If the results of the two evaluations differ, then the combined small overlap rating is equal to the lower rating.
Driver-side
Tested vehicle: 2021 Buick Encore GX Select 4-door 4wd
Rating applies to 2021-25 models built after July 2020
The Buick Encore GX was introduced in the 2020 model year as a replacement for the Buick Encore, while the 2021 Chevrolet Trailblazer returns after an 11-year absence from the market as a replacement for the Chevrolet Trax. Two small overlap frontal tests of the Encore GX were conducted, one by the Institute and the other by General Motors . Ratings are based on both tests, but the vehicle specifications shown below are based on the Institute’s test.
| Evaluation criteria | Rating |
|---|---|
| Overall driver-side evaluation | |
| Structure and safety cage | |
| Driver injury measures | |
| Head/neck | |
| Chest | |
| Hip/thigh | |
| Lower leg/foot | |
| Driver restraints and dummy kinematics | |
Technical measurements for this test
Measures of occupant compartment intrusion on driver side
| Evaluation criteria | Measurement | |
|---|---|---|
| Test ID | VTN2105 | CEN2104 |
| Lower occupant compartment | ||
| Lower hinge pillar max (cm) | 6 | 5 |
| Footrest (cm) | 5 | 2 |
| Left toepan (cm) | 2 | 1 |
| Brake pedal (cm) | 3 | 2 |
| Parking brake (cm) | ||
| Rocker panel lateral average (cm) | 1 | 1 |
| Upper occupant compartment | ||
| Steering column | 0 | 0 |
| Upper hinge pillar max (cm) | 6 | 4 |
| Upper dash (cm) | 6 | 2 |
| Lower instrument panel (cm) | 5 | 2 |
Driver injury measures
| Evaluation criteria | Measurement | |
|---|---|---|
| Test ID | VTN2105 | CEN2104 |
| Head | ||
| HIC-15 | 154 | 122 |
| Peak gs at hard contact | no contact | no contact |
| Neck | ||
| Tension (kN) | 1.1 | 1.1 |
| Extension bending moment (Nm) | 19 | 12 |
| Maximum Nij | 0.21 | 0.20 |
| Chest maximum compression (mm) | 20 | 24 |
| Femur (kN) | ||
| Left | 1.1 | 0.1 |
| Right | 1.0 | 0.2 |
| Knee displacement (mm) | ||
| Left | 1 | 0 |
| Right | 1 | 0 |
| Knee-thigh-hip injury risk (%) | ||
| Left | 0 | 0 |
| Right | 0 | 0 |
| Maximum tibia index | ||
| Left | 0.44 | 0.66 |
| Right | 0.42 | 0.50 |
| Tibia axial force (kN) | ||
| Left | 1.8 | 1.6 |
| Right | 1.3 | 1.8 |
| Foot acceleration (g) | ||
| Left | 54 | 50 |
| Right | 112 | 40 |
Passenger-side
Tested vehicle: 2021 Buick Encore GX Essence 4-door 4wd
Rating applies to 2021-25 models built after July 2020
The Buick Encore GX was introduced in the 2020 model year as a replacement for the Buick Encore, while the 2021 Chevrolet Trailblazer returns after an 11-year absence from the market as a replacement for the Chevrolet Trax. Passenger-side small overlap frontal ratings are assigned by the Institute based on a test of a 2021 Encore GX conducted by General Motors.
| Evaluation criteria | Rating |
|---|---|
| Overall passenger-side evaluation | |
| Structure and safety cage | |
| Passenger injury measures | |
| Head/neck | |
| Chest | |
| Hip/thigh | |
| Lower leg/foot | |
| Passenger restraints and dummy kinematics | |
| Driver injury measures | |
| Head/neck | |
| Chest | |
| Hip/thigh | |
| Lower leg/foot | |
| Driver restraints and dummy kinematics | |
Technical measurements for this test
Measures of occupant compartment intrusion on passenger side
| Evaluation criteria | Measurement |
|---|---|
| Test ID | VTP2109 |
| Lower occupant compartment | |
| Lower hinge pillar max (cm) | 8 |
| Footrest (cm) | 4 |
| Right toepan (cm) | 0 |
| Center toepan (cm) | 2 |
| Rocker panel lateral average (cm) | 0 |
| Upper occupant compartment | |
| Center dash (cm) | 5 |
| Upper hinge pillar max (cm) | 7 |
| Upper dash (cm) | 7 |
| Right lower dash (cm) | 6 |
Passenger injury measures
| Evaluation criteria | Measurement |
|---|---|
| Test ID | VTP2109 |
| Head | |
| HIC-15 | 243 |
| Peak gs at hard contact | no contact |
| Neck | |
| Tension (kN) | 0.7 |
| Extension bending moment (Nm) | 14 |
| Maximum Nij | 0.18 |
| Chest maximum compression (mm) | 16 |
| Femur (kN) | |
| Left | 1.9 |
| Right | 3.0 |
| Knee displacement (mm) | |
| Left | 4 |
| Right | 10 |
| Knee-thigh-hip injury risk (%) | |
| Left | 0 |
| Right | 0 |
| Maximum tibia index | |
| Left | 0.75 |
| Right | 0.86 |
| Tibia axial force (kN) | |
| Left | 2.7 |
| Right | 2.8 |
| Foot acceleration (g) | |
| Left | 50 |
| Right | 38 |
Driver injury measures
| Evaluation criteria | Measurement |
|---|---|
| Test ID | VTP2109 |
| Head | |
| HIC-15 | 168 |
| Peak gs at hard contact | no contact |
| Neck | |
| Tension (kN) | 1.1 |
| Extension bending moment (Nm) | 11 |
| Maximum Nij | 0.20 |
| Chest maximum compression (mm) | 22 |
| Femur (kN) | |
| Left | 0.0 |
| Right | 0.1 |
| Knee displacement (mm) | |
| Left | 0 |
| Right | 0 |
| Knee-thigh-hip injury risk (%) | |
| Left | 0 |
| Right | 0 |
| Maximum tibia index | |
| Left | 0.26 |
| Right | 0.25 |
| Tibia axial force (kN) | |
| Left | 0.5 |
| Right | 0.8 |
| Foot acceleration (g) | |
| Left | 40 |
| Right | 55 |
Front crash prevention: pedestrian (day)
Child seat anchors
Rating applies to 2021-25 models
| Evaluation criteria | Rating |
|---|---|
| Overall evaluation | |
| Vehicle trim | Preferred |
| Seat type | cloth |
This vehicle has 2 rear seating positions with complete child seat attachment (LATCH) hardware. It has 1 additional seating position with a tether anchor only.
| Rating icon | Rating |
|---|---|
| G | Good |
| A | Acceptable |
| M | Marginal |
| P | Poor |
| Seating positions that rely on borrowed lower anchors or have only a tether anchor available are not rated. | |
thether anchor symbol | Tether anchor |
lower anchor symbol | Lower anchors |
| Lower anchor(s) can be borrowed from adjacent positions(s) | |
| No hardware available |
Details by seating position
| Position | Rating |
|---|---|
| 1 | |
| Tether anchor | |
| easy-to-find location | |
| no other hardware could be confused for anchor | |
| Lower anchors | |
| too deep in seat | |
| not too much force needed to attach | |
| easy to maneuver around anchors | |
| 2 | |
| Tether anchor | |
| easy-to-find location | |
| no other hardware could be confused for anchor | |
| Lower anchors | |
| none available | |
| 3 | |
| Tether anchor | |
| easy-to-find location | |
| no other hardware could be confused for anchor | |
| Lower anchors | |
| too deep in seat | |
| not too much force needed to attach | |
| easy to maneuver around anchors |
Technical measurements for this test
Seat position 21
| Lower anchor A | |
|---|---|
| Open access rated | No |
| Depth (cm) | 2-4 |
| Force (lbs) | 6 |
| Clearance angle (degrees) | 77 |
| Lower anchor B | |
| Open access rated | No |
| Depth (cm) | 2-4 |
| Force (lbs) | 22 |
| Clearance angle (degrees) | 77 |
| Tether anchor | |
| Location | Middle seatback |
| Confusing hardware present | Yes |
| Has contrasting label within 3 inches of tether anchor |
Yes |
| Tether anchors can be accessed while seatback is properly positioned for use of LATCH |
Not measured |
Seat position 22
| Lower anchor A | |
|---|---|
| No lower latch for this seat position | |
| Lower anchor B | |
| No lower latch for this seat position | |
| Tether anchor | |
| Location | Middle seatback |
| Confusing hardware present | Yes |
| Has contrasting label within 3 inches of tether anchor |
Yes |
| Tether anchors can be accessed while seatback is properly positioned for use of LATCH |
Not measured |
Seat position 23
| Lower anchor A | |
|---|---|
| Open access rated | No |
| Depth (cm) | 2-4 |
| Force (lbs) | 18 |
| Clearance angle (degrees) | 81 |
| Lower anchor B | |
| Open access rated | No |
| Depth (cm) | 2-4 |
| Force (lbs) | 15 |
| Clearance angle (degrees) | 79 |
| Tether anchor | |
| Location | Middle seatback |
| Confusing hardware present | Yes |
| Has contrasting label within 3 inches of tether anchor |
Yes |
| Tether anchors can be accessed while seatback is properly positioned for use of LATCH |
Not measured |