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Maserati Quattroporte vs Mercedes-Benz SLK Class: 5-year value retention (34% vs 44%), resale value, and cost of ownership head-to-head. Mercedes-Benz SLK Class holds its value better.
On five-year value retention the Mercedes-Benz SLK Class comes out ahead, holding about 44% of its value versus 34% for the Maserati Quattroporte. Over the first five years the Mercedes-Benz SLK Class loses roughly $16,638 while the Maserati Quattroporte loses about $66,060 — a gap near $49,422.
First-year drop is the biggest factor: the Mercedes-Benz SLK Class sheds about 13% in year one versus 16% for the Maserati Quattroporte. If you buy used, the steeper early drop is what the original owner absorbs.