Mercedes-Benz 500SEL fuel smell and increased gas consumption issue on Mercedes-Benz 500SEL

Some Mercedes-Benz 500SEL owners report experiencing issues such as a strong gasoline smell inside the vehicle, particularly when the tank is full, which may be attributed to fuel leaks or problems within the fuel system. These fuel leaks can lead to noticeable gas odors, making it crucial for owners to address the issue promptly. Additionally, some owners report increased gas consumption, which can be exacerbated by using a lower octane fuel than recommended, resulting in poor combustion and reduced fuel efficiency. To mitigate these concerns, it is advisable for owners to have their vehicles inspected by qualified mechanics to diagnose and repair any underlying fuel system issues, and to adhere to the manufacturer's fuel grade recommendations for optimal performance.