Hey all. Took the 2013 to Florida, had a sears car topper thing all filled up on the roof racks. (Sears Sport sv-20) Car was not overly full. I was lead to believe this car top carrier would not impact gas mileage much. My first reaction was the car felt heavy, braked slower, wind noise was louder, and it took a lot longer to get up to speed. It really took a lot to get up the big hills. Gas mileage wasn't terrible but there was a definite difference having the car top carrier. When we got to Disney world the car was just covered in dirty Ohio salt since it was snowing when we left. I pulled in to to car wash and it said max 7'. Well I didn't think I was over 7' so I went for it. I dinged the 7' sign as i pulled in just barely. There was no damage to the car wash but I found some dings and scrapes on the car topper lmao. Car was great for the trip, no issues, biggest issue was the much slower braking. Just my experience for anyone that cares.