confidential 
2009 Nissan Cube Wagon 1.8 SL 4dr Wagon (1.8L 4cyl CVT)
Noisy engine during acceleration.
 The day after I got my new Cube, I drove it and noticed the acceleration was not smooth and engine is loud. I got a bad feeling about this new car of mine.  This engine is not consistent, it drives normal and sometimes loud engine with lesser power during acceleration as if engine is struggling.  I brought it to the dealership but they said it is in normal condition, just try to observe it.  Mileage now is only 1,450.