VW in all their wisdom ? decided to stick on there body kits, a few screws here and there, but mostly super sticky glue.
3 options,
Steam cleaner on basta*d hot mode, softes the glue quickly, allowing you to gently pull them off.
Boiling water, same as above, but slower & kinder to the paint work.
Hot air gun, same again, except you run the risk of melting the paint/plastic.
Cheers
kraM