The first-generation Audi TT was manufactured in collaboration between factories Ingolstad VAG Group (Germany) and Györ (Hungary).
The first performed the racks, that once painted soldiers, moved by rail factory to Györ in Hungary, which manufactured the engine and performed the assembly of the whole.
Once the manufacturing and assembly process were sent back to the German factory for the distribution of finished models.
The video below shows, up to the minute 1:47, the engines have been made at the factory in Györ until 2005. 1:48 From the minute we see the process of assembling the Audi TT MKI.