Engine Number

WARNING: This page is about a different variant/trim than selected.

The engine number ("engine codes" and "serial number") are located at the engine/transmission joint -arrow-.

Fig 1: Identifying Engine Number Location
Courtesy of AUDI OF AMERICA, LLC
The engine codes are also stamped on the right side of the cylinder head -2- and on the cylinder block -1-.

Fig 2: Identifying Engine Code Location
Courtesy of AUDI OF AMERICA, LLC
In addition, a sticker with "engine codes" and "serial number" is affixed to the toothed belt guard.
Engine codes beginning with "C" are four-digit.
The first 3 digits of the engine code stand for displacement and the mechanical structure of the engine. They are stamped in the cylinder block, including the serial number.
The fourth digit describes the engine output and torque and depends on the engine control module.

NOTE:

The 4-digit engine code is on the type plate, vehicle data label and engine control module.

Locations of the type plate and vehicle data label. Refer to TYPE PLATE AND VIN