The Highlander Limited offers optional Pre-Collision System, 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 Q7 doesn't offer collision warning or crash mitigation brakes.
The Highlander Limited's optional lane departure warning system alerts a temporarily inattentive driver when the vehicle begins to leave its lane. The Q7 doesn't offer a lane departure warning system.
To help make backing safer, the Highlander Limited/Platinum's cross-path warning system uses wide-angle radar in the rear bumper to alert the driver to vehicles approaching from the side, helping the driver avoid collisions. The Q7 doesn't offer a cross-path warning system.
The Highlander Limited offers optional Safety Connect™, which uses a global positioning satellite (GPS) receiver and a cellular system to help track down your vehicle if it's stolen or send emergency personnel to the scene if any airbags deploy. The Q7 doesn't offer a GPS response system, only a navigation computer with no live response for emergencies, so if you're involved in an accident and you're incapacitated help may not come as quickly.
Both the Highlander and the Q7 have standard driver and passenger frontal airbags, front side-impact airbags, side-impact head airbags, front seatbelt pretensioners, height adjustable front shoulder belts, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, daytime running lights, available blind spot warning systems and rear parking sensors.
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 Highlander its highest rating: “Top Pick Plus” for 2016, a rating granted to only 73 vehicles tested by the IIHS. The Q7 is not even a standard “Top Pick” for 2016.

