* 2.5L 4-cylinder: This engine produced 175 horsepower and 175 lb-ft of torque.
* 3.5L V6: This engine produced 250 horsepower and 249 lb-ft of torque.
To know which engine is in a specific 2005 Altima, you'll need to check the vehicle's identification number (VIN) or the vehicle's documentation.
