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Hyundai Sonata holds its value better — 63% five-year retention against 62% for the Buick Regal. Resale value and cost of ownership, head to head.
On five-year value retention the Hyundai Sonata comes out ahead, holding about 63% of its value versus 62% for the Buick Regal. Over the first five years the Hyundai Sonata loses roughly $10,157 while the Buick Regal loses about $9,641 — a gap near $-516.
First-year drop is the biggest factor: the Hyundai Sonata sheds about 6% in year one versus 8% for the Buick Regal. If you buy used, the steeper early drop is what the original owner absorbs.