* 2.4L 4-cylinder: This was the standard engine, producing 162 horsepower and 168 lb-ft of torque.
* 2.7L V6: This was an optional engine, producing 173 horsepower and 178 lb-ft of torque.
You can find the specific engine in your 2004 Sonata by checking the VIN (Vehicle Identification Number) or looking at the engine bay.
