Nissan Rogue Forum

Is it normal that when you accelerate it sounds like high whinning noise. Almost like a belt slipping, but not quite?

No thats probably your alternator. On my 93 Nissan Altima I had that problem and was told it was the alternator.

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Is this a serious question?

Of course your Rogue should not make a high pitched whining noise when accelerating, take it to the dealer right away and get it fixed on warranty

From: CVT Transmission Problems

"The cars with CVT produce some noise when you try to accelerate. The car noise is produced as a result of CVT trying to adjust the engine speed. Though CVT mechanism is such that it facilitates the engine to rev at any speed, but the sound might seem like that of a slipping clutch. Those who are accustomed to driving cars with automatic transmission might find that slightly bothersome. Since, it provides a smooth transition while accessing maximum power, it leaves an impression of the car being slowed down. You need to adjust to the dynamics."

But as kerrton suggested if it's an excessive noise, get thee to a dealer asap.