Original: The first generation S3 is built on the same A platform of the Audi A3, Volkswagen Golf Mk4, Audi TT, SEAT LeÃ n and Å koda Octavia.
Simplified: The Audi A3 is a car produced by Audi since 1996. It is based on the Volkswagen Golf's platform, and it is currenty in its Second Generation.