Let's see what's to improve here…
I can highly suggest reading this topic about improving the underside of your car:
GolfMk7.com topic about retrofitting aerodynamic parts on the underside of the car
I've got part number 5Q0 825 229 C already at home:




Comments 4
to cover the space between pivot and bottom part of trunk you can install 5E0501247A Pivot mounting trim
That's a great idea, thanks!
valeru4
to cover the space between pivot and bottom part of trunk you can install 5E0501247A Pivot mounting trim
I just noticed that there's an exhaust muffler in this exact position on my car… so I cannot install it