Don 
2008 Nissan Altima Sedan 2.5 S 4dr Sedan (2.5L 4cyl CVT)
Like Car But Has An Incurable Bug
 I Generally like the car especially the gas mileage.  Plenty of interior room, and trunk space.  The only negative seems to be paring of the CVT transmission with a 4-cyl. engine. When starting uphill from a stop, particularly w/the A/C on, it feels like the engine is missing or that it is having difficulty shifting gears.  I think it is the latter.  I've taken it to the dealership 3 times, and they cannot find anything wrong and suggested I use a higher octane gas.  That did not work (and defeats the purpose of buying a 4-cyl.).  So, I use the shift control in the "manual" mode when going up a hill from a stop and do not experience the "missing" feeling.