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Audi Q7 holds its value better — 43% five-year retention against 43% for the Audi S8. Resale value and cost of ownership, head to head.
On five-year value retention the Audi Q7 comes out ahead, holding about 43% of its value versus 43% for the Audi S8. Over the first five years the Audi Q7 loses roughly $35,464 while the Audi S8 loses about $74,360 — a gap near $38,896.
First-year drop is the biggest factor: the Audi Q7 sheds about 7% in year one versus 4% for the Audi S8. If you buy used, the steeper early drop is what the original owner absorbs.