* 2.4L I4: This was the base engine, producing 162 horsepower and 168 lb-ft of torque.
* 2.7L V6: This engine was optional and produced 180 horsepower and 184 lb-ft of torque.
It's important to note that the specific engine in a 2007 Kia Optima will depend on the trim level and individual vehicle. To determine the engine size of a specific car, you can check the VIN (Vehicle Identification Number) or look for an engine label under the hood.
