Thor Motor Coach 20J Promaster Roof TOP keeps an estimated 64% of its value after 5 years — #1581 of 5948 RVs & trailers VINdown tracks. See its full depreciation curve, cost per day, and best model year to buy.
Per VINdown's modeling, the Thor Motor Coach 20J Promaster Roof TOP retains an estimated 64% of its value after five years, ranking #1581 of 5948 RVs & trailers we track. That trails the 72% five-year average for Class B in its class by 8 points, so it depreciates faster than most rivals.
Most of the loss lands early: the Thor Motor Coach 20J Promaster Roof TOP sheds about 28% of its value in year one alone. From roughly $170,653 it falls to around $109,900 by year five — a five-year loss near $60,753, about $33.29 a day in depreciation.
Because the steepest drop hits around year 1, a lightly-used Thor Motor Coach 20J Promaster Roof TOP bought at 1 year old lets the first owner absorb the worst of the depreciation while the curve flattens — usually the value sweet spot. Explore the full year-by-year curve, trims, and true cost of ownership in the Model Lab above.
It keeps an estimated about 64% of its value after five years — better than most among the 5948 RVs & trailers VINdown tracks (ranked #1581).
From about $170,653 it drops to roughly $109,900 after five years — a loss near $60,753 (64% retained).
Around 1 year old: that is just past the steepest depreciation, so you skip the biggest drop while the value curve is flattening.
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