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Porsche Boxster vs Porsche Cayman: 5-year value retention (56% vs 56%), resale value, and cost of ownership head-to-head. Porsche Boxster holds its value better.
On five-year value retention the Porsche Boxster comes out ahead, holding about 56% of its value versus 56% for the Porsche Cayman. Over the first five years the Porsche Boxster loses roughly $14,486 while the Porsche Cayman loses about $19,272 — a gap near $4,786.
First-year drop is the biggest factor: the Porsche Boxster sheds about 12% in year one versus 15% for the Porsche Cayman. If you buy used, the steeper early drop is what the original owner absorbs.