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 Nautilus are reminded to check the back seat if they opened the rear door before starting out. The A6 Allroad doesn’t offer a back seat reminder.
The Nautilus 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. A system to reveal vehicles in the A6 Allroad’s blind spot costs extra.
To help make backing out of a parking space safer, the Nautilus has standard Cross-Traffic Alert and Rear Cross Traffic Braking automatically engages the brakes to help avoid a collision. Audi charges extra for Rear Cross-Traffic Assist on the A6 Allroad.
The Nautilus’ 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 A6 Allroad doesn’t offer a driver alert monitor.
Both the Nautilus and the A6 Allroad have standard driver and passenger frontal airbags, front side-impact airbags, driver and front passenger knee airbags, side-impact head airbags, front and rear seatbelt pretensioners, height adjustable front shoulder belts, four-wheel antilock brakes, all wheel drive, traction control, electronic stability systems to prevent skidding, crash mitigating brakes, post-collision automatic braking systems, daytime running lights, lane departure warning systems and around view monitors.