Three members of the A320 Family are assembled in Hamburg-Finky; A318, A319 and A321. The A320 is assembled in Toulouse.
All A320 Family interiors are installed in Finky with an A320's first flight often being TLS-Hamburg with performance and systems checks on this flight. Flight 2 is HAM-TLS with cabin checks and then usually one more check flight prior to Customer acceptance.
All very smooth now.