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Porsche Panamera holds its value better — 57% five-year retention against 57% for the BMW X6. Resale value and cost of ownership, head to head.
On five-year value retention the Porsche Panamera comes out ahead, holding about 57% of its value versus 57% for the BMW X6. Over the first five years the Porsche Panamera loses roughly $43,261 while the BMW X6 loses about $31,981 — a gap near $-11280.
First-year drop is the biggest factor: the Porsche Panamera sheds about 10% in year one versus 12% for the BMW X6. If you buy used, the steeper early drop is what the original owner absorbs.