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Audi TT RS holds its value better — 69% five-year retention against 69% for the Cadillac CT5. Resale value and cost of ownership, head to head.
On five-year value retention the Audi TT RS comes out ahead, holding about 69% of its value versus 69% for the Cadillac CT5. Over the first five years the Audi TT RS loses roughly $22,403 while the Cadillac CT5 loses about $15,203 — a gap near $-7200.
First-year drop is the biggest factor: the Audi TT RS sheds about 6% in year one versus 4% for the Cadillac CT5. If you buy used, the steeper early drop is what the original owner absorbs.