Nissan has had a history of issues with their continuously variable transmissions (CVTs). While CVTs are designed to provide smooth and efficient power delivery, there have been reports of problems and complaints from Nissan owners regarding the reliability and durability of their CVTs. Here are some of the common issues associated with Nissan CVTs:

1. Shuddering and juddering: Many Nissan owners have reported experiencing shuddering or juddering sensations during acceleration. This issue is often caused by a lack of proper lubrication or overheating of the CVT.

2. Transmission failure: Premature transmission failure is a significant problem reported by Nissan owners. This can occur due to various reasons such as a defective valve body, worn-out pulleys or belts, or inadequate fluid levels.

3. Delayed engagement: Some Nissan CVTs may exhibit delayed engagement, where there is a noticeable delay in power delivery after shifting into drive or reverse. This can be frustrating and potentially dangerous in certain situations.

4. Whining or humming noise: A common complaint with Nissan CVTs is the presence of a whining or humming noise during acceleration. This can be indicative of internal transmission problems or excessive wear.

5. Overheating: CVTs are prone to overheating, especially when subjected to heavy loads or driving in extreme conditions. Overheating can lead to accelerated wear and damage to the transmission components.

It's worth noting that not all Nissan vehicles equipped with CVTs experience these issues, and some owners have had trouble-free experiences. However, the high number of reported problems has resulted in several class-action lawsuits against Nissan related to their CVTs.

If you are experiencing issues with your Nissan CVT, it is recommended to take your vehicle to an authorized Nissan service center for diagnosis and potential repairs. They can provide guidance and determine if any warranty coverage or recalls apply to your specific situation.