Audi interior trim options vary from one model to the next. The 2010 Audi A3, for example, offers two trip packages. The Premium models feature leather upholstery, automatic dual-zoned temperature control, power accessories, trip computers, satellite radio, cruise control, and a 10-speaker car stereo system with a CD player. Upgrading to Premium Plus will include audio controls mounted on the steering wheel and Bluetooth, as well as a power driver’s seat and aluminum interior trim. There are optional packages available like a cold weather package that includes heated seats and mirrors, or a sports option with special seats. Other options include stereo upgrades, CD changers, iPod interfaces and navigation systems. There are also standard options such as sunroofs and wood interior trim.