No noticeable hit to gas mileage and the roof rack added a bit of noice when installed, but i haven’t noticed additional noice with the addition of the awning.
When I anchor the awning with the ropes in the center of each panel, it creates a V that the water drains from. If you don’t anchor with the ropes, water will pool on each of the 3 panels. I always anchor with ropes to be safe from wind so it’s a non issue.
