Ms. Michelle young (alias) is a Japanese customer. She picked up her rental car in Frankfurt Germany in the evening of December 12 2025 with Sixt and planned to return it in Frankfurt on December 23. After the trip she noticed a refueling fee on the final bill. She said the car was not full when she received it and the staff told her that she did not need to return it full. Because of that she returned it without filling the tank but she was still charged a fuel fee.
After the request came in QEEQ first checked the order and the final invoice and confirmed the charge was marked as a refueling cost. The agent then reviewed the pickup paperwork. It showed the fuel level as full at pickup and it had the customer signature. To support the case QEEQ asked the customer for any proof from pickup and right after pickup. The customer provided a gas receipt from shortly after pickup and described the staff who handled the handover. QEEQ sent these materials to Sixt and questioned the logic of charging for fuel if the car was truly full at the start.
The next day Sixt replied that they needed a clear photo of the fuel gauge at pickup. Without that they would not agree to refund. QEEQ still pushed again based on the timing of the receipt and asked Sixt to recheck their records. After further follow up Sixt updated the final statement and refunded the fuel fee directly to the customer card. The remaining charge on the bill was only a border crossing fee. The customer got a corrected bill and avoided paying for fuel that did not match her experience.
In cases like this the most useful habit is simple. At pickup and return the driver should take clear photos of the fuel gauge and the dashboard and keep the signed paperwork. If the paper says full but the gauge is not full it is better to ask for an update on the spot. These small steps make later disputes much easier.
The risk in this case was not big damage or an accident. It was a single fee that can be hard to prove after leaving the counter. Many travelers only notice it when the final bill arrives and the memory is already far away. This is a common travel moment where support and fast checks matter.
If booking on QEEQ the 24 7 Customer Service can step in right when a fee looks wrong. They can help confirm what the charge is tied to and collect the right proof before it is lost. For people who want fewer price worries before the trip QEEQ also offers Price Drop Protector. It watches the booking price and helps keep the cost stable so customers can focus on the drive and handle issues with less stress.
