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 Elantra N are reminded to check the back seat if they opened the rear door before starting out. The RS 3 doesn’t offer a back seat reminder.
Over 200 people are killed each year when backed over by motor vehicles. The Elantra N Auto has standard Reverse Parking Collision Avoidance Assist that uses rear sensors to monitor and automatically apply the brakes to prevent a rear collision. The RS 3 doesn’t offer backup collision prevention brakes.
The Elantra N’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 RS 3 doesn’t offer a driver alert monitor.
Both the Elantra N and the RS 3 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, crash mitigating brakes, daytime running lights, lane departure warning systems, blind spot warning systems, rearview cameras and rear cross-path warning.

