Based on mk5 golf platform so same issues:
Check all electrics work.
Check for fault codes
door locking modules (deadlocks will fail and will then either not deadlock or worse, lock and stay locked. New modules are not expensive - will show as a fault code
Knocking from the front over bumps and braking could be a front strut, arb or mounts but could also be the steering rack. If it's the rack you're looking at over £1k to replace as it's not repairable and the new one has to be coded to the car with the correct maps.
Leaking inner door seals front and rear
front sill / arch corrosion behind front wheels (stonechip damage)
TFSI specific:
blocked PCV system - replace with latest version
failed diverter valve - as above
Fuel pump camshaft lobe wear - £10 part to replace will sort.
Failed coil packs