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Chevrolet Impala holds its value better — 55% five-year retention against 55% for the Buick Cascada. Resale value and cost of ownership, head to head.
On five-year value retention the Chevrolet Impala comes out ahead, holding about 55% of its value versus 55% for the Buick Cascada. Over the first five years the Chevrolet Impala loses roughly $14,229 while the Buick Cascada loses about $14,915 — a gap near $686.
First-year drop is the biggest factor: the Chevrolet Impala sheds about 9% in year one versus 9% for the Buick Cascada. If you buy used, the steeper early drop is what the original owner absorbs.