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Buick Regal Tourx vs Mazda Mazda3 Sedan: 5-year value retention (64% vs 64%), resale value, and cost of ownership head-to-head. Buick Regal Tourx holds its value better.
On five-year value retention the Buick Regal Tourx comes out ahead, holding about 64% of its value versus 64% for the Mazda Mazda3 Sedan. Over the first five years the Buick Regal Tourx loses roughly $10,603 while the Mazda Mazda3 Sedan loses about $8,726 — a gap near $-1877.
First-year drop is the biggest factor: the Buick Regal Tourx sheds about 7% in year one versus 7% for the Mazda Mazda3 Sedan. If you buy used, the steeper early drop is what the original owner absorbs.