2010-2026 Audi Tank Cannot Be Fully Filled TSB

Audi has released Technical Service Bulletin (TSB) 00 24 90 2074853/1, dated August 9, 2024, to address customer inquiries regarding their vehicle's fuel tank not being able to be fully filled. This informational bulletin applies to all Audi vehicles from model years 2010 through 2026, including the 2022 Audi e-tron and many other models. It clarifies that the observed behavior is not a fault but a designed safety feature.

This TSB is crucial for owners who might be concerned about their Audi e-tron tank not filling to its maximum volume, particularly when the fuel gauge indicates an empty tank. It provides an explanation for why this occurs, reassuring owners that their vehicle is functioning as intended.

Symptoms of the Audi Tank Not Filling Issue

Customers typically report a specific set of conditions related to their vehicle's fuel system. The primary symptom is when:

• "The fuel gauge is at 0 miles or under a remaining range of 10km (6.25 miles) and the tank cannot be filled up to its maximum volume."

This observation can lead owners to believe there is a problem with their fuel tank or gauge, prompting them to seek service. However, the TSB explains the underlying technical reasons for this behavior.

Understanding the "Tank Cannot Be Fully Filled" Phenomenon

The technical background provided in TSB 00 24 90 2074853/1 explains that the remaining range displayed by your Audi is calculated using a sophisticated algorithm. This algorithm considers various factors, including the average fuel consumption from the current driving cycle and previous driving cycles. This dynamic calculation ensures an accurate estimation of how far the vehicle can travel on its remaining fuel.

Crucially, the TSB highlights a built-in safety concept: even when the fuel gauge indicates 0 miles of remaining range, a reserve amount of fuel is maintained in the tank. This reserve is designed to prevent the vehicle from breaking down immediately upon reaching the 0-mile mark. This safety measure ensures that drivers have a small buffer to reach a fuel station, even if the gauge shows empty. Therefore, the perceived issue of an Audi e-tron tank not filling to its absolute maximum capacity when the gauge is at zero is a direct result of this intentional safety reserve.

What This Means for Your Audi

For owners experiencing an Audi e-tron tank not filling completely under these circumstances, it's important to understand that this is not a defect or a malfunction requiring repair. The TSB explicitly states that there is no applicable production solution or service procedure for this condition. The vehicle is operating as designed, prioritizing driver safety by ensuring a small fuel reserve is always available, even when the dashboard indicates otherwise.

This means that if your Audi's fuel gauge reads 0 miles or less than 6.25 miles (10 km) of range, and you find that the tank doesn't accept the full advertised capacity, it is simply because the vehicle is retaining its safety reserve. There is no need for diagnostic checks or repairs related to this specific observation.

Important Warranty Information

Audi Technical Service Bulletin 00 24 90 2074853/1 also clarifies the warranty implications of this informational notice. It states: "This TSB is informational only and not applicable to any Audi Warranty." This means that any customer concerns or inquiries related to the tank not being fully filled, as described in this bulletin, will not be covered under Audi's warranty, as it is considered a normal operating characteristic rather than a fault.

Source: NHTSA ID: 11007216