Genuine grey birch trim is standard fare on the S6, though it can be replaced by carbon fiber inlays for $400. Buyers seeking a more personalized ride may also opt for a black leather dash ($1,275), Sirius satellite radio ($550), rear-side airbags ($350), a heated rear bench seat ($225), or intelligent cruise control ($2,000). The Warm Weather Package, which includes rear sunshades and a solar roof panel for $1,190 may be another item of interest, as may the $3,900 Technology Package with its voice-activated controls, keyless ignition, rear parking aid system, navigation system, and Sirius satellite radio.