The Discovery’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 Q5 Sportback doesn’t offer a driver alert monitor.
Both the Discovery and the Q5 Sportback have standard driver and passenger frontal airbags, front side-impact airbags, side-impact head airbags, front seatbelt pretensioners, four-wheel antilock brakes, all wheel drive, 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.
The Land Rover Discovery weighs 820 to 1100 pounds more than the Audi Q5 Sportback. The NHTSA advises that heavier vehicles are much safer in collisions than their significantly lighter counterparts.

