This is the most reliable way to find out what kind of fuel your car takes. The owner's manual will usually specify the octane rating and type of fuel (e.g., unleaded, diesel, etc.) that your car requires.
2. Look for a fuel door label.
Most cars have a label near the fuel door that indicates the type of fuel the car takes. This label may also list the octane rating.
3. Consult your car's fuel gauge.
Some cars have fuel gauges that indicate the type of fuel the car takes. The fuel gauge may be marked with the words "unleaded," "diesel," or "flex fuel."
4. Ask a mechanic or gas station attendant.
If you're still not sure what kind of fuel your car takes, you can ask a mechanic or gas station attendant for help. They should be able to look up your car's specifications and tell you what kind of fuel it requires.
5. Use a fuel finder app.
There are several mobile apps available that can help you find the right fuel for your car. These apps typically allow you to enter your car's make, model, and year, and then they'll tell you what kind of fuel it takes.