Nissan Altima Engine Problems: QR25DE Issues
The Nissan Altima engine most owners worry about is the 2.5L QR25DE. It can burn oil, rattle on cold starts, and damage itself when the pre-cat breaks apart. Not every engine fails, though. Most problems follow a pattern, and you can catch them early...
Read article: Nissan Altima Engine Problems: QR25DE Issues