Does a dirty air filter affect gas mileage on a modern car?
My thoughts: When the car is warming up and the O2 sensor isn't operational, a dirty air filter could cause the car to run a little rich. But at full operating temp, the computer should compensate for any reduced air flow. A dirty air filter could even potentially increase mileage by reducing power for those of us with heavy feet.
My thoughts: When the car is warming up and the O2 sensor isn't operational, a dirty air filter could cause the car to run a little rich. But at full operating temp, the computer should compensate for any reduced air flow. A dirty air filter could even potentially increase mileage by reducing power for those of us with heavy feet.