How to Open the Gas Tank on a Mercedes-Benz?

Giancarlo Perlas June 1, 2022
HOW TO OPEN GAS CAP - Mercedes-Benz CLA - YouTube

Imagine driving a brand new Mercedes-Benz for the first time and pulling up at the gas station for a refill. You park it up nicely near the machine and start looking for a lever near the door-side of your feet.

“Where’s it?”

“Did they forget to put one in this model?”

No, they didn’t! If you got your hands on a brand new Benz and are still looking for a way to open the gas tank on a Mercedes, this blog post is for you.

Let’s understand the process with a step-by-step approach.

Where is the gas tank lever?

Gone are the days when you had to bend down in the driving seat and find the lever to open the gas tank. As with all car technologies, this has also evolved.

Now, you don’t need to struggle to find a lever to open the gas tank cover. There is no separate mechanism for that anymore.

This brings us to the next question.

How do you open the gas tank cover?

First of all, don’t panic or try opening the tank cover with your keys or any other thin solid object. It will only put your car paint at risk of ugly scratches that will need costly repairs, no matter how hard you try. If you’ve already left a scratch on your car, make sure you compare local repair quotes using DingGo to save money on repairs. 

So, how do you open the cover then?

Well, simply unlock your car electronically, walk up to the tank cover, and push it inside. It will smoothly pop open just like it did when you pulled the lever in older models.

Also, remember that the gas tank cover will only open when you unlock the car from the car’s key remote or manually from the driver-side door. Manually unlocking other doors will do no good.

And by the way, if you believe manual unlocking of doors will damage your Benz’s electronic system, you need to think again.

Which side of the car is my gas tank opening located?

Imagine getting out of your Mercedes in style and going to the wrong side to refuel your car. Won’t look cool, right?

Well, for your information, most cars have the gas tank opening on the driver’s side of the vehicle. But, exceptions can always be there.

However, you can confirm this while being seated in the driving seat and avoid a dent on your swag. How? Any guesses?

No, the side mirror will not show you!

Instead, look at your car’s dashboard display that gives you important information about your vehicle.

Focus on your fuel gauge and closely observe the petrol machine sign. It will have an arrow pointing in either direction. The gas tank opening is located on whichever side this arrow points to.

But, where do you push the cover?

This is a logical question, and you might first struggle with finding the exact spot to push.

But, it won’t be a long or persistent issue. Here’s what to do.

Try to push the middle part on one side of the cover. If it’s the correct one, the cover will pop outside and rotate to the other side.

Pro tip: Try pushing the side closer to the back wheel first.

How do you open the inside gas cap?

This is the easiest part. Once the outside cover is completely opened, simply unscrew the gas cap just like you would do in any other car.

Rotate it in an anti-clockwise direction and pull it outside when you hear a clicking sound. It will come off smoothly.

And that’s all you need to do. Now you can go ahead and fill up your tank. No more worries and no more asking other people to do it for you.

But hey! If you’re a complete beginner, you might need help with closing the tank as well. Also, for a smooth, classic experience, here are 5 professional maintenance tips for your Mercedes Benz.

Pro tip: Pay close attention to the gas cap’s clicking sound. If your gas cap doesn’t click while opening or closing, it might need repair or maintenance.

How do you close the gas tank afterward?

Once you’re done refueling, put the gas cap back on and screw it in a clockwise direction. You will hear a clicking sound that indicates the gas cap is locked in place.

Now, take the outside cover and push it until you hear a sound that indicates it’s locked in place.

And that’s it! You have now learned to correctly open and close the gas tank on your Mercedes Benz.

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About Author

Giancarlo Perlas

Giancarlo Perlas is an economist by profession with a career spanning nearly two decades. His professional journey has seen him assume vital roles in various government and private organizations, particularly in the blockchain and cryptocurrency sectors. Alongside his civic and corporate pursuits is his love for cars, particularly those made by Mercedes-Benz. In 2012, he found himself with like-minded individuals within BenzInsider. From then on, he used the platform as a way to share his passion with the automotive community. Follow his Facebook page at, X (formerly Twitter) @giancarloperlas, and IG @benzinsider. View all posts by Giancarlo Perlas →

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