The 2012 nissan altima transmission is a CVT (Continuously Variable Transmission) that is engineered for smooth acceleration and increased fuel efficiency. Although it has been commended for its quiet operation, several drivers have reported reluctance or shuddering at high mileage. Regular fluid changes and software updates are critical to durability. When properly maintained, the 2012 Nissan Altima gearbox provides a smooth and comfortable drive. To ensure the best performance, always use the correct CVT fluid.