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BMW I3 holds its value better — 39% five-year retention against 39% for the Audi A6. Resale value and cost of ownership, head to head.
On five-year value retention the BMW I3 comes out ahead, holding about 39% of its value versus 39% for the Audi A6. Over the first five years the BMW I3 loses roughly $26,937 while the Audi A6 loses about $35,932 — a gap near $8,995.
First-year drop is the biggest factor: the BMW I3 sheds about 12% in year one versus 24% for the Audi A6. If you buy used, the steeper early drop is what the original owner absorbs.