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BMW Z4 vs Lexus IS: 5-year value retention (67% vs 67%), resale value, and cost of ownership head-to-head. Lexus IS holds its value better.
On five-year value retention the Lexus IS comes out ahead, holding about 67% of its value versus 67% for the BMW Z4. Over the first five years the Lexus IS loses roughly $13,732 while the BMW Z4 loses about $18,235 — a gap near $4,503.
First-year drop is the biggest factor: the Lexus IS sheds about 5% in year one versus 9% for the BMW Z4. If you buy used, the steeper early drop is what the original owner absorbs.