Buick Century fuel smell in cabin due to gas leak under hood on Buick Century

Some Buick Century owners report experiencing a fuel smell in the cabin due to potential gas leaks under the hood. Common causes include a loose, damaged, or missing gas cap, which can allow gasoline vapors to escape into the cabin. Additionally, leaks in the vehicle's fuel lines that transport gas from the tank to the engine can result in a strong gasoline odor. Some owners have noted that if the smell resembles exhaust fumes, it may indicate a problem with the exhaust system, posing a risk of carbon monoxide accumulation in the cabin. Furthermore, a failing catalytic converter can trigger unusual exhaust smells and activate the check engine light. It is crucial for owners to promptly inspect these potential issues and consult a mechanic if the problem persists, ensuring safety and proper vehicle function.