* 2.5L 4-cylinder engine: This engine produced 175 horsepower and 175 lb-ft of torque.
* 3.5L V6 engine: This engine produced 270 horsepower and 258 lb-ft of torque.
The specific engine in your 2011 Altima will depend on the trim level you have. You can check your vehicle's identification number (VIN) or consult your owner's manual to determine the exact engine.