2020-2026 Audi Engine Mounting Oil Residue TSB 2080494/1

Understanding Audi Engine Mounting Oil Residue

Audi Technical Service Bulletin (TSB) 2080494/1, released on December 19, 2025, addresses a common observation by technicians during vehicle maintenance: the presence of a small amount of oil residue on one or both engine mountings. This condition, often noted in various 2020-2026 Audi models, is typically not indicative of a fault or a problem requiring immediate repair.

According to Audi, this Audi engine mounting oil residue is a byproduct of the manufacturing process. Engine mountings are filled with oil, and a small amount may later escape. Importantly, this does not compromise the function or integrity of the engine mounting itself.

Technical Background and Workshop Findings

Audi's technical background for TSB 2080494/1 explains that the engine mounting is filled with oil during manufacturing. A small amount of this oil may escape over time, but this does not affect the component's function.

Workshop findings indicate that this condition is usually discovered by technicians during routine maintenance, inspection, or other repairs. It is not typically a result of a customer complaint, but rather an observation made during service. The TSB includes an image (Figure 1) illustrating the appearance of this oil residue on an engine mounting.

Important Warning: Do Not Repair Without Symptoms

Audi explicitly advises against performing repairs on the engine mounting solely due to the presence of escaping oil if there is no relevant customer complaint. This guidance is crucial for owners to avoid unnecessary service work and potential costs.

When to Seek Service for Engine Mounting Issues

While the presence of a small amount of Audi engine mounting oil residue is generally not a concern, owners should be aware of actual symptoms that would warrant a closer inspection. Customer complaints related to the engine mounting that do require attention typically include "vibrations and/or noises when the engine is idling."

If you experience these specific symptoms, it's advisable to have your vehicle inspected by an authorized Audi service center. They can properly diagnose whether the vibrations or noises are related to a genuine engine mounting issue, rather than just the normal oil residue.

Manufacturer's Stance and Warranty

This TSB, identified as 2080494/1, is purely informational. It serves to clarify that the observed oil residue is usually benign. Consequently, this condition is generally not covered under any Audi Warranty unless it leads to a functional failure of the engine mounting, evidenced by the aforementioned symptoms like vibrations or noises when the engine is idling. The TSB explicitly states, "This TSB is informational only and not applicable to any Audi Warranty."

Owners should understand that finding Audi engine mounting oil residue during routine checks does not automatically mean a repair is needed or that the component is defective. The TSB aims to prevent misdiagnosis and unnecessary repairs for a condition that is often normal.

Additional Information from Audi

Audi advises that all part and service references provided in TSB 2080494 are subject to change and/or removal. Technicians and service centers should always check with their Parts Department and/or ETKA for the latest information and parts bulletins. Additionally, the Repair Manual should be consulted for fasteners, bolts, nuts, and screws that require replacement during any repair procedure.

Source: NHTSA ID: 11027439