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Audi S6 vs Infiniti Q50: 5-year value retention (51% vs 51%), resale value, and cost of ownership head-to-head. Audi S6 holds its value better.
On five-year value retention the Audi S6 comes out ahead, holding about 51% of its value versus 51% for the Infiniti Q50. Over the first five years the Audi S6 loses roughly $37,419 while the Infiniti Q50 loses about $21,224 — a gap near $-16195.
First-year drop is the biggest factor: the Audi S6 sheds about 0% in year one versus 12% for the Infiniti Q50. If you buy used, the steeper early drop is what the original owner absorbs.