Just Imagine: You Stop at the Gas Station, Place Your Usual Order, and Without Realizing It, the Attendant Puts the Wrong Fuel in Your Car. Incorrect Refueling of Vehicles Is a Real Problem and More Common Than Many People Imagine. Whether Due to Driver Distraction, the Attendant’s Mistake, or Even Questionable Actions by the Stations, the Fact Is That Refueling with the Wrong Fuel Can Lead to Headaches and a Hefty Bill for the Consumer. But How to Resolve This Situation Without Being Harmed?
Incorrect Refueling of Vehicles: What Does the Law Say? Cases of Incorrect Refueling of Vehicles Are Considered Abusive Practices Under the Consumer Defense Code (CDC). According to the Legislation, the Customer Is Not Obligated to Pay for Fuel They Did Not Order, Whether It Is Gasoline, Diesel, or Even Additized Gasoline Put in Without Authorization. The Code Compares This Type of Error to a “Free Sample,” Making It Clear That the Consumer Should Not Bear the Costs of Poorly Executed Service at the Gas Station.
However, Proving the Mistake Is Not Always Easy. The Customer Needs to Demonstrate That They Made the Correct Order and Were Not Responsible for the Mistake. A Practical Strategy Is to Use Dash Cameras to Record the Order Made to the Attendant. This Way, If Necessary, the Recording Can Be Presented to Consumer Protection Agencies, Such as Procon, or Even to a Specialized Consumer Defense Delegation.
Step by Step to Resolve the Issue at the Gas Station
Upon Noticing the Incorrect Refueling of Vehicles, Stop the Car Immediately and Avoid Starting It to Not Increase the Risk of Damage.
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Try to Reach an Agreement with the Gas Station to Only Pay for the Correct Fuel Requested. In Many Cases, the Manager May Recognize the Error and Propose a Solution.
Take Photos of the Tank, the Amount on the Pump, and Request Invoices or Receipts for the Fuel Actually Put In. If Possible, Note the Attendant’s Name and Any Witnesses.
What If the Problem Affects the Vehicle’s Engine?
Refueling Errors at Gas Stations Affect Different Types of Engines in Varying Ways. Flex Cars Have Greater Tolerance, as They Are Made to Run on Both Ethanol and Gasoline. On the Other Hand, Diesel Vehicles, Especially with Modern Engines, Are Highly Sensitive to Other Fuels.
Diesel Engines That Should Only Receive Diesel S-10 Can Suffer Severe Damage with Diesel S-500, Which Increases the Risk of Clogging the Catalyst, Higher Fuel Consumption, and Greater Emission of Pollutants.
For Any Type of Vehicle, Upon Noticing the Refueling Error, Avoid Attempting to “Burn” the Wrong Fuel. It Is Recommended to Call a Tow Truck and Take the Car to a Specialized Repair Shop, Where It Will Be Necessary to Drain the Tank and Check for Possible Damage to the Fuel Pumps.
Repairs and Compensation
Repairing Damage Caused by Incorrect Refueling of Vehicles Can Cost Over R$ 1,000, Depending on the Severity. If It Is Proven That the Mistake Was the Gas Station’s Fault, the Company Is Obligated to Cover the Repair Costs. If the Station Refuses to Cover the Loss, the Consumer Can Hire a Lawyer and Take the Case to a Small Claims Court.
Practical Tips to Prevent and Resolve Incorrect Refueling Problems:
Inform the Attendant Exactly Which Fuel You Want and, If Possible, Supervise the Refueling. Choosing a Gas Station with a Good Reputation That Prioritizes Quality Service Is Essential to Avoid Problems.
Keep the Tank Well Documented, Especially in Cases of Larger Refuelings or Long Trips. Invoices, Receipts, and Even Photos Are Important Proofs. Consumers Have the Right to Refuse Payment for Incorrect Fuel and Demand Compensation in Case of Damage.
Incorrect Refueling of Vehicles Is a Problem That Affects Not Only the Driver’s Wallet but Also the Safety and Performance of the Car. Knowing Your Rights and How to Act Can Make All the Difference When It Comes to Resolving the Issue with the Gas Station.

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