Isata 24RWM Mercedes Sprinter vs Thor Motor Coach 20A Promaster: 5-year value retention (61% vs 58%), resale value, and cost of ownership head-to-head. Isata 24RWM Mercedes Sprinter holds its value better.
On five-year value retention the Isata 24RWM Mercedes Sprinter comes out ahead, holding about 61% of its value versus 58% for the Thor Motor Coach 20A Promaster. Over the first five years the Isata 24RWM Mercedes Sprinter loses roughly $79,601 while the Thor Motor Coach 20A Promaster loses about $62,803 — a gap near $-16798.
First-year drop is the biggest factor: the Isata 24RWM Mercedes Sprinter sheds about 26% in year one versus 28% for the Thor Motor Coach 20A Promaster. If you buy used, the steeper early drop is what the original owner absorbs.
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