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2018년식 · 6세대 (2014-2019) · 2.5i

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2026. 9. 2. 작업

난이도 & 준비물

난이도 보통⏱ 예상 60~120🔧 리프트

증상

My 2018 Subaru Legacy 3.6R has a CVT, and I have wondered why it is programmed to change ratios in discrete steps (like a conventional automatic transmission would) rather than varying continuously. I see a couple possibilities in the comments and answers to this prior question: CVT on 6 cylinder cars If the ratio varies continuously, it feels and sounds odd to a driver used to conventional transmissions ("like a car with a slipping clutch"). There's greater wear on the transmission during ratio changes, so limiting the frequency of changes improves reliability. Is it likely one of t

처리 내용

I suspect it's due to how they have designed the actuator that controls the ratio between the input and output drives. While a truly continuous CVT is certainly possible, and I believe there are examples of this in the "wild", Subaru may have decided that it made more sense from a reliability/cost-effectiveness or other factor to use an actuator that moves in discrete steps. Without knowing what their design criteria were it's unlikely we'll know for sure.

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