Engine Number/Engine Specifications: Notes

WARNING: This page is about a different car, the 2018 Audi A6 Quattro, 2017 Audi A6 Quattro, and 2016 Audi A6 Quattro. However, it is still accessible from the selected car via links, so may be relevant.

Engine Number

NOTE:

The engine number can only be seen with the engine cover removed.

Fig 1: Engine Code And Serial Number Location

Courtesy of AUDI OF AMERICA, LLC

The engine number ("engine code" and "serial number") is located on the front of the cylinder block at the top -arrow-.
Engine codes beginning with "C" are four letters long.
The first three positions of the engine code stand for displacement and the mechanical engine structure. They are stamped in the cylinder block, including the serial number.
The fourth position represents the engine output and torque and is dependent on the engine control module.

NOTE:

The four digit engine code is on the type plate (market-specific), vehicle data label and engine control module.

Component locations of the type plate (market-specific) and vehicle data label. Refer to appropriate service information