Collector’s field notes

Audi RS 6 Avant (C8)
The RS 6 brought eight cylinders. Sometimes it only needs four.
The C8 RS 6 Avant has a useful sense of occasion: a wide body, a V8 and somewhere for a considerable amount of luggage. Then the engine specification starts explaining how it avoids using all eight cylinders when they are not needed. I wanted to know what that sentence actually meant.
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