| Term | Definition |
| MMI basic system | The system combines various infotainment control units. In contrast to the MMI high system, not all infotainment control units can be installed in an MMI basic system (e.g. TV tuner). |
| MMI high system | The system combines various infotainment control units. In an MMI high system all control units can be installed. |
| Bus versions | MOST bus | | t
| MOST stands for »Media-Oriented Systems Transport« |
| t
| Optical data transfer via fibre-optic cables |
| t
| High-speed data transfer |
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| CAN bus | | t
| CAN stands for »Controller Area Network« |
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| LIN bus | | t
| LIN stands for »Local Interconnect« |
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| MMI | The Multi Media Interface (MMI) is an integrated operating concept used by Audi for easy, logical and intuitive operation of on-board car systems and infotainment components.| t
| 2G stands for 2nd generation |
| t
| 3G stands for 3rd generation |
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