take a look at your upper strut mounts, if you see any cracks, replace them. I've seen them crack and shoot through denting the hood, Also take a look at your ball joints, they're known to cause creaking and banging noises

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99 Jetta Mk3
07 Jetta Mk5
89 300E W124
10 E 350 W212
08 C300 W204
Benz's aren't mine