Over 200 people are killed each year when backed over by motor vehicles. The Terrain has standard Reverse Automatic Braking that uses rear sensors to monitor for objects to the rear and automatically applies the brakes to prevent a collision. The Trax doesn’t offer backup collision prevention brakes.
The Terrain AWD has all-wheel drive to maximize traction under poor conditions, especially in ice and snow. The Trax doesn’t offer all-wheel drive.
When descending a steep, off-road slope, the Terrain AWD’s standard Hill Descent Control allows you to creep down safely. The Trax doesn’t offer Hill Descent Control.
The Terrain offers an optional HD Surround Vision to allow the driver to see objects all around the vehicle on a screen. The Trax only offers a rear monitor and rear parking sensors that beep or flash a light. That doesn’t help with obstacles to the front or sides.
The GMC Terrain offers an optional HD Surround Vision and it also offers an optional rear camera washer to make backing always safe, regardless of road dirt or grime, while the Chevrolet Trax doesn’t offer a camera washer, requiring manual cleaning.
The Terrain 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 Trax’s blind spot costs extra.
To help make backing out of a parking space safer, the Terrain has standard Rear Cross Traffic Alert and Rear Cross Traffic Braking automatically engages the brakes to help avoid a collision. Chevrolet charges extra for Rear Cross Traffic Alert on the Trax and the Trax’s Rear Cross Traffic Alert does not include automatic braking.
Both the Terrain and the Trax have standard driver and passenger frontal airbags, front side-impact airbags, side-impact head airbags, front seatbelt pretensioners, front wheel drive, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, crash mitigating brakes, daytime running lights, lane departure warning systems and rearview cameras.
The GMC Terrain weighs 410 to 745 pounds more than the Chevrolet Trax. The NHTSA advises that heavier vehicles are much safer in collisions than their significantly lighter counterparts. Crosswinds also affect lighter cars more.

