Purchased one of these about 18 months ago.  About 5 months ago,  began to see tears / rips in the fabric where it meets the frame - upper sides of structure. Placed some duct tape to try and strengthen and stop the tears from growing. Tears continue to grow slowly and now I'm seeing a few more tiny holes. Frame has held up well.   
So my car gets some rain water on it. 
One year warranty is inadequate - fabric quality / strength is poor.  An outdoor shelter should hold up much better than this one has.  Zippered door is a good design - but I think that will come apart pretty soon. I only open it about once a week. 
Construction directions were mediocre too.