The Vanquish has standard Autonomous Emergency 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 McLaren GTS doesn't offer collision warning or crash mitigation brakes.
The Vanquish’s lane departure warning system alerts a temporarily inattentive driver when the vehicle begins to leave its lane and gently nudges the vehicle back towards its lane. The McLaren GTS doesn’t offer a lane departure warning system.
The Vanquish has a standard Surround View System to allow the driver to see objects all around the vehicle on a screen. The McLaren GTS only offers a rear monitor and front and rear parking sensors that beep or flash a light. That doesn’t help with obstacles to the sides.
The Vanquish’s blind spot warning system uses sensors to alert the driver to objects in the vehicle’s blind spots where the side view mirrors don’t reveal them. The McLaren GTS doesn’t offer a system to reveal objects in the driver’s blind spots.
To help make backing out of a parking space safer, the Vanquish’s standard Rear Cross Traffic Assist uses sensors in the rear to alert the driver to vehicles approaching from the side, helping the driver avoid collisions. The McLaren GTS doesn’t offer a rear cross-path warning system.
The Vanquish’s driver alert monitor detects an inattentive driver then sounds a warning and suggests a break. According to the NHTSA, drivers who fall asleep cause about 100,000 crashes and 1500 deaths a year. The McLaren GTS doesn’t offer a driver alert monitor.
Both the Vanquish and the McLaren GTS have standard driver and passenger frontal airbags, driver and front passenger knee airbags, side-impact head airbags, front seatbelt pretensioners, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, daytime running lights and rearview cameras.
The Aston Martin Vanquish weighs 849 to 1058 pounds more than the McLaren GTS. The NHTSA advises that heavier cars are much safer in collisions than their significantly lighter counterparts.