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Audi RS-7 vs Porsche Cayenne: 5-year value retention (56% vs 56%), resale value, and cost of ownership head-to-head. Porsche Cayenne holds its value better.
On five-year value retention the Porsche Cayenne comes out ahead, holding about 56% of its value versus 56% for the Audi RS-7. Over the first five years the Porsche Cayenne loses roughly $39,377 while the Audi RS-7 loses about $58,388 — a gap near $19,011.
First-year drop is the biggest factor: the Porsche Cayenne sheds about 0% in year one versus 2% for the Audi RS-7. If you buy used, the steeper early drop is what the original owner absorbs.