JSanchez 
2007 Nissan Sentra Sedan 2.0 S 4dr Sedan (2.0L 4cyl CVT)
Another Bad Engine
 Same story as below, mine is 64,000 and the engine is gone after driving fine for 3 years. All regular maintenance is done. Just like below, one day light came on with knocking and misfiring noise. Dealer said same thing: needs a new engine. I am waiting for a used one from an ind. mechanic, for a replacement cost (incl. labor) of $2,500. I had intended to drive this car until it is paid for (19 more months!) I will NEVER buy another Nissan. 