There's no doubt about it: The 2008 Audi S6 is a safe car. It's received excellent ratings and has a high number of safety features that are sure to keep you secure on the road.
According to Edmunds, the 2008 Audi S6 does not have any ratings from the National Highway Traffic Safety Administration (NHTSA). Cars.com notes the Audi S6 received a Top Safety Pick designation from the Insurance Institute for Highway Safety (IIHS) "for exceptional performance in frontal-, side-, and rear-impact crashes." As a corollary, Edmunds reports the S6 earned a rating of "good" in both frontal and side-impact tests from the IIHS.
Edmunds lists the standard safety equipment in the S6 as including "antilock disc brakes, stability control, all-wheel drive, front-seat side airbags and full-length side curtain airbags." There are optional features available, as well, that ramp up the safety, including "rear-seat airbags, a rearview camera and Audi's Lane Assist lane departure system."
ForbesAutos throws in a few more safety perks, like the electronic stability program, the anti-slip regulation, and two-stage airbags. They also note that "outward visibility is excellent" in the Audi S6.