roof rack and gas mileage

[heloski]

Has anyone put a roof rack on their 2013 FFH yet? I am thinking of getting a roof rack and cargo carrier. I will probably only have the cargo carrier on the roof when I need it but the cross bars and fairing will stay on at all times. Does this hurt the gas mileage at all on the hybrids?

[acdii]

Anything that interrupts the airflow over the car and causes drag will impact MPG. Wont be much, but it still affects it, maybe 1-2 MPG tops, nothing like the carrier would though.