Although the Audi quattro four-wheel drive system has been around since 1980, and has gone through technical upgrades, it's principle has remained the same. The quattro system utilizes the front and rear axles to distribute power between all four wheels in order to allow for maximum control and safety.
This animated Web video illustrates how the technology works on the new Audio RS5, which was unveiled last week at the Geneva Auto Show.
Discuss: How it works: The Audi quattro principle
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