What is the reason for the high fuel consumption of Hyundai Accord in 2009?

Hello, please check your spark plug to see if there is something wrong with your spark plug and the ignition is not good. Check the throttle again to see if it is too dirty. If it is dirty, clean it. I hope my answer is helpful to you. You can keep asking me questions. Thank you for your support to the owner. I'm glad to answer your question. I wish you a happy life! If there is something wrong with the car, ask the car master. 4S shop professional technician, 10 minutes to solve.