The basic steps to fill your car with gas
Filling your gas tank takes about five minutes and follows the same sequence every time. Drive to a gas station, pull up to a pump on the correct side of your car, turn off the engine, open your fuel door, unscrew the gas cap, insert the pump nozzle, squeeze the handle, and stop when the pump clicks off. Then replace the cap, close the fuel door, and drive away. The pump clicks automatically when your tank is full, so you do not have to guess or watch closely.
The hardest part for new drivers is remembering which side of the car the fuel door is on. Check your owner's manual or look at the fuel gauge on your dashboard — most gauges show a small arrow or triangle pointing to the side where the door sits. Some cars have the door on the left, others on the right. Once you know, you will not forget.
Key Takeaways
- Turn off your engine before you start pumping, and never smoke or use your phone near the pump.
- The pump nozzle has three notches that control flow speed; start with the lowest notch to avoid overflow.
- The pump stops automatically when your tank is full, so you do not need to top it off by hand.
- Most gas stations charge by the gallon at the pump, and you can pay with a card or cash inside the station.
Finding the fuel door and opening it correctly
Your fuel door is a small panel on the side of your car, usually near the rear wheel. On most modern cars, you open it by pressing inward on the panel itself — it will pop out slightly, and you pull it the rest of the way. On older cars or some luxury vehicles, you may need to pull a lever inside the car near the driver's seat. Your owner's manual shows exactly where yours is.
Once the door is open, you will see the fuel cap. Unscrew it by turning it counterclockwise, and set it somewhere you will not lose it — many people place it on top of the fuel door or hold it in their hand. Some newer cars have capless fuel systems, which means there is no cap to remove; the nozzle inserts directly into the opening.
Choosing the right pump nozzle and grade of fuel
Gas pumps have three or four nozzles hanging from the same hose, labeled by octane rating: regular (usually 87 octane), mid-grade (usually 89 octane), and premium (usually 91 or 93 octane). Your owner's manual tells you which one to use. Most cars run on regular; using a higher grade does not make your car run better unless the manual specifically calls for it. Using a lower grade than recommended can damage your engine over time.
Each nozzle has a trigger and three notches on the handle. The lowest notch is the slowest flow, the middle notch is medium speed, and the highest notch locks the trigger so the pump runs hands-free. Start with the lowest notch to avoid splashing fuel on yourself or the ground. Once you are comfortable, you can switch to the middle notch or lock it at the highest setting.
Inserting the nozzle and starting the pump
Insert the nozzle into your fuel opening and push it in firmly until it seats. The nozzle should fit snugly. Squeeze the trigger or engage the lock notch, and fuel will begin flowing. You will hear a hissing sound as air escapes from the tank. This is normal.
Watch the pump display as it counts up the gallons and dollars. Most pumps show both at the same time. You do not need to watch the entire time, but check back every minute or so to see how full your tank is getting. If you are unsure how much your tank holds, your owner's manual lists the capacity, or you can ask the station attendant.
Knowing when to stop and what to avoid
The pump will click off automatically when your tank reaches full. This is the correct stopping point. Do not try to squeeze more fuel in after the pump stops, because the fuel will back up into the nozzle and may spill. Topping off by hand can also damage your car's emissions system on newer vehicles.
Never smoke, use a lighter, or use your phone's camera flash near the pump. Gasoline vapors are flammable, and static electricity from your body can ignite them. To avoid static buildup, touch a metal part of the car before you touch the nozzle. Do not leave the pump unattended while it is running, and do not let children operate the pump.
Replacing the cap and paying
Once the pump clicks off, remove the nozzle and replace your fuel cap by screwing it clockwise until it is snug. You do not need to tighten it hard; hand-tight is enough. Close the fuel door by pushing it until it latches. If your car has a capless system, straightforward remove the nozzle and close the door.
Most gas stations let you pay at the pump using a debit or credit card. Insert your card, enter your ZIP code, and select your fuel grade before you start pumping. If you prefer to pay inside, you can prepay a dollar amount and pump until you reach it, or pump first and pay after. Some stations charge a small fee for paying inside with cash, so ask before you pump.
Troubleshooting common problems at the pump
If the pump keeps clicking off before your tank feels full, your fuel tank vent may be blocked, or the nozzle may not be seating properly. Remove the nozzle, reinsert it firmly, and try again. If it still clicks off repeatedly, try a different pump or ask the station attendant to check the nozzle.
If fuel spills on your hands or clothes, wash your hands with soap and water as soon as you can. Do not wipe gasoline on your clothes or try to dry it with heat. If you spill fuel on the ground, tell the station attendant when ready; they have a protocol for cleaning it up safely. Never attempt to clean up a fuel spill yourself.
Frequently Asked Questions
What should I do if I put the wrong fuel grade in my tank?
If you used regular instead of premium, or vice versa, do not panic. One fill-up of the wrong grade will not damage your car. straightforward use the correct grade next time. If you put diesel in a gasoline car or gasoline in a diesel car, do not start the engine; call a tow truck and have the tank drained at a repair shop.
Can I pump gas while my engine is running?
No. Always turn off your engine before you start pumping. A running engine increases the risk of fire if fuel vapors ignite. It also wastes fuel and can damage your fuel system.
Why does the pump keep stopping when my tank is not full?
The nozzle may not be seating properly in your fuel opening, or your vent line may be blocked. Try removing and reinserting the nozzle firmly. If the problem continues, try a different pump or ask the station attendant for help.
Is it bad to let my gas tank run very low?
Running your tank below a quarter full can damage your fuel pump over time, because the pump uses gasoline to cool itself. Try to refill when your gauge reaches a quarter tank. On long drives, do not wait until the low-fuel warning light comes on.
Do I need to turn off my car's air conditioning while pumping?
No, you do not need to turn off the air conditioning. Just turn off the engine itself. The air conditioning will not restart until you start the engine again.