So my Q5 Sportback is fitted with the manufacturer’s roof bars which only fix to the position shown in the pics as that is where the holes are drilled. I went to Halfords to get a 470L roof box fitted, and it wouldn’t fit as the tailgate would come into contact with the roof box when opening. This is because the bars are positioned so far back. The only cure was to spend £200+ on Halfords roof bars which can be positioned anywhere, and could be put on further forward to avoid the boot. I really didn’t want to do this considering Audi had given me a set of official roof bars for ‘free’. Halfords told me the problem wouldn’t be cured by buying a smaller box either. Is this a design fault? Would Audi’s own brand roof boxes fit this model? Or are the roof bars effectively ornamental only?