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Old 07-26-2007, 09:14 PM   #1
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Default CVT Reliability

Trying to do some research... How reliable are the CVT trannies? I know there'* probably no one on the forum that has one, but have you heard anything about them? Just curious...


*for those that don't know, CVT stands for Continuously Variable Transmission*
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Old 07-26-2007, 10:13 PM   #2
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I've wondered this myself. If they are as reliable as the 3.5 that they are mated to (at least on the Maxima) I'd be sold some day.
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Old 07-26-2007, 11:39 PM   #3
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i've, as well as my boss have questioned that too, it seems like the internals are a bunch of belts and clutches almost like a snowmobile clutch/belt set-up, i would think the belts would eventually wear out
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Old 07-26-2007, 11:42 PM   #4
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Old 07-26-2007, 11:44 PM   #5
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I could get used to it
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Old 07-27-2007, 01:26 AM   #6
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The thing keeping them out of higher HP cars has been torque handling. I think the one that Nissan uses on the VQ is the strongest one on the market ATM.

I think most of them have more of a metal/chain belt and cones that move as opposed to rubber belts. I prefer my DSG though for now...

Engines will definetly need to be optimized for this. Holding @ redline like that is a lot more stress than rowing through a few gears, oil flow, cooling, etc all need to be setup properly to keep the engines at the same reliability as a conventionally geared car. Some CVT'* have paddles to "shift" to a few preset places on the gearing, but kinda a gimmick IMO..

But I am glad car makers are looking at new transmission technologies, such as the sequentials in a lot of sportier cars, the DSG in my car, or the similar SST in the new EVO... In 5-10 years, torque converter transmissions wont be on most models i'm willing to venture.
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Old 07-27-2007, 02:16 AM   #7
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From personal experience, the Audi my parents own has never had tranny problems, and I've put a beating on that car personally. The CVT does well in sporty situations (of course, could be better) and feels very clean. The thing I love is the continuous power band, and the amount of acceleration when you're going 80 and want to hit 120.
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