See also:

Engine serial number
MR20DE QR25DE The number is stamped on the engine as shown. ...

Overview
The Altima is a mid-size car currently being manufactured by the Japanese automaker Nissan, and is arguably a continuation of the "bloodline" that began with the Nissan Bluebird in 1957. ...

Tire Pressure Monitoring System (TPMS) (if so equipped)
Each tire, including the spare (if provided), should be checked monthly when cold and inflated to the inflation pressure recommended by the vehicle manufacturer on the vehicle placard or tire ...