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Thunderbird Formula 310 SUN Sport keeps an estimated 55% of its value after 5 years — #5573 of 5780 boats VINdown tracks.
Per VINdown's modeling, the Thunderbird Formula 310 SUN Sport retains an estimated 55% of its value after five years, ranking #5573 of 5780 boats we track. That trails the 62% five-year average for Cruiser in its class by 7 points, so it depreciates faster than most rivals.
Most of the loss lands early: the Thunderbird Formula 310 SUN Sport sheds about 36% of its value in year one alone. From roughly $469,680 it falls to around $257,384 by year five — a five-year loss near $212,296, about $116.33 a day in depreciation.
Because the steepest drop hits around year 1, a lightly-used Thunderbird Formula 310 SUN Sport 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 55% of its value after five years — worse than most among the 5780 boats VINdown tracks (ranked #5573).
From about $469,680 when new it drops to roughly $257,384 after five years — a loss near $212,296 (55% of its value retained).
Around 1 year old: that is just past the steepest depreciation, so you skip the biggest drop while the value curve is flattening.