Low sales volumes and a high sticker price commonly conspire to keep some vehicles off the radar of both testing agencies, and while the lack of results means we don't have any firm evidence of their safety, the A5 and its S5 and RS5 siblings do offer a full complement of modern safety equipment.
Every A5/S5/RS5 comes standard with dual front and side airbags, traction and stability control, and anti-lock brakes. Cabriolet models miss out on the otherwise-standard side curtain airbags due to its topless construction, but the convertibles do gain larger side airbags and pop-up rollbars that deploy when sensors determine a rollover is imminent.
Throughout the A5 range, visibility is very good, though the Cabriolet's soft top can limit rearward visibility somewhat. An available rearview camera and reverse parking sensors helps improve low-speed maneuvering safety.
For those with a taste for higher-tech safety enhancements, Audi offers a lane-departure warning system, blind spot monitors, and radar-based cruise control as well as adaptive headlamps.