Standard equipment in the Z4's cabin includes: cruise control, Bluetooth, audio with iPod/USB support, HD radio, heated mirrors, adaptive xenon headlights, keyless entry, automatic climate control, BMW Ambiance lighting, rain-sensing wipers, and more.
The upgrades list is where things get more interesting. A la carte items include heated front seats, park distance control, automatic high beams, and BMW Concierge services. Most of the best upgrades are bundled into packages: the Technology Package adds navigation with voice-command, real-time traffic information, BMW Online access, BMW Apps functions, enhanced USB and Bluetooth smartphone integration, and more; the M Sport Package (non-sDrive35is models) brings many performance-themed upgrades, including an M steering wheel, anthracite headliner, Adapative M Suspension, M interior trim in Aluminum Carbon Shadow, anthracite wood trim, and a range of wheel and exterior paiant options; the Premium Sound package adds premium hi-fi audio and a one-year subscription to satellite radio; and a number of appearance packages can bring extended leather, unique Hyper Orange accents, and more.
BMW Apps is particularly interesting (bundled with the Technology Package), bringing streaming radio services like Pandora and Stitcher as well as Facebook, Twitter, and Wiki Local access on-the-go.