Thunderbird Formula 310 BR vs Thunderbird Formula 310 SUN Sport: 5-year value retention (55% vs 55%), resale value, and cost of ownership head-to-head. Thunderbird Formula 310 BR holds its value better.
On five-year value retention the Thunderbird Formula 310 BR comes out ahead, holding about 55% of its value versus 55% for the Thunderbird Formula 310 SUN Sport. Over the first five years the Thunderbird Formula 310 BR loses roughly $209,186 while the Thunderbird Formula 310 SUN Sport loses about $212,296 — a gap near $3,110.
First-year drop is the biggest factor: the Thunderbird Formula 310 BR sheds about 36% in year one versus 36% for the Thunderbird Formula 310 SUN Sport. If you buy used, the steeper early drop is what the original owner absorbs.
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