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Buick Encore GX vs Kia Optima: 5-year value retention (62% vs 62%), resale value, and cost of ownership head-to-head. Buick Encore GX holds its value better.
On five-year value retention the Buick Encore GX comes out ahead, holding about 62% of its value versus 62% for the Kia Optima. Over the first five years the Buick Encore GX loses roughly $10,061 while the Kia Optima loses about $9,006 — a gap near $-1055.
First-year drop is the biggest factor: the Buick Encore GX sheds about 1% in year one versus 8% for the Kia Optima. If you buy used, the steeper early drop is what the original owner absorbs.