The Acadia Denali’s optional pre-crash front seatbelts will tighten automatically in the event the vehicle detects an impending crash, improving protection against injury significantly. The Flex doesn’t offer pre-crash pretensioners.
For enhanced safety, the GMC Acadia’s middle seat shoulder belts have child comfort guides to move the belt to properly fit children. A better fit can prevent injuries and the increased comfort also encourages children to buckle up. The Ford Flex doesn’t offer comfort guides on its middle seat belts.
In the past twenty years hundreds of infants and young children have died after being left in vehicles, usually by accident. When turning the vehicle off, drivers of the Acadia are reminded to check the back seat if they opened the rear door before starting out. The Flex doesn’t offer a back seat reminder.
The Acadia has a standard front seat center airbag, which deploys between the driver and front passenger, protecting them from injuries caused by striking each other in serious side impacts. The Flex doesn’t offer front seat center airbags.
The Acadia (except SL/SLE) offers optional Forward Automatic Braking, which use forward mounted sensors to warn the driver of a possible collision ahead. If the driver doesn’t react and the system determines a collision is imminent, it automatically applies the brakes at full-force in order to reduce the force of the crash or avoid it altogether. The Flex offers an available collision warning system without the automated brake feature that would prevent or reduce the collision if the driver fails to react.
When descending a steep, off-road slope, the Acadia SLE/SLT’s optional Hill Descent Control allows you to creep down safely. The Flex doesn’t offer Hill Descent Control.
The GMC Acadia has Daytime Running Lights to help keep it more visible under all conditions. Canadian government studies show that driving with lights during the day reduces accidents by 11% by making vehicles more conspicuous. The Flex doesn’t offer Daytime Running Lights.
The Acadia (except SL/SLE)’s optional lane departure warning system alerts a temporarily inattentive driver when the vehicle begins to leave its lane. The Flex doesn’t offer a lane departure warning system.
The Acadia Denali offers an optional Surround Vision System to allow the driver to see objects all around the vehicle on a screen. The Flex only offers a rear monitor and rear parking sensors that beep. That doesn’t help with obstacles to the front or sides.
Both the Acadia and the Flex have standard driver and passenger frontal airbags, front side-impact airbags, side-impact head airbags, front seatbelt pretensioners, front wheel drive, plastic fuel tanks, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, rearview cameras, available all wheel drive, blind spot warning systems and rear cross-path warning.
A significantly tougher test than their original offset frontal crash test, the Insurance Institute for Highway Safety does 40 MPH small overlap frontal offset crash tests. In this test, where only 25% of the total width of the vehicle is struck, results indicate that the GMC Acadia is safer than the Flex:
|
|
Acadia |
Flex |
| Overall Evaluation |
GOOD |
ACCEPTABLE |
| Restraints |
GOOD |
ACCEPTABLE |
| Head Neck Evaluation |
GOOD |
GOOD |
| Peak Head Forces |
0 G’s |
0 G’s |
| Steering Column Movement Rearward |
0 cm |
11 cm |
| Chest Evaluation |
GOOD |
GOOD |
| Max Chest Compression |
19 cm |
23 cm |
| Hip & Thigh Evaluation |
GOOD |
GOOD |
| Femur Force R/L |
.2/.1 kN |
2.8/2.2 kN |
| Hip & Thigh Injury Risk R/L |
0%/0% |
0%/0% |
| Lower Leg Evaluation |
GOOD |
GOOD |
For its top level performance in all IIHS frontal, side, rear impact and roof-crush tests, and with its optional front crash prevention system, the Insurance Institute for Highway Safety grants the Acadia the rating of “Top Pick” for 2017, a rating granted to only 110 vehicles tested by the IIHS. The Flex was not even a “Top Pick” for 2016.

