Gas smell around car

My car was parked in the garage and I am smelling gas. I also smell it around the car on the rear driver's side.
Experienced mechanics share their insights in answering this question :
As a safety precaution do not park the vehicle in the garage until the problem is fixed. The gas tank is made out of plastic and you may have a leaking tank or fuel line. The easiest thing to check is if the fuel cap is loose or the seal on it is damaged. You can also look under vehicle to see if a gas leak is seen. I recommend having a certified mechanic, like one from YourMechanic, inspect if there is any fuel leaking from the gas tank.

How to Identify and Fix Common car Problems ?

Our sources include academic articles, blog posts, and personal essays from experienced mechanics :

Your Mercedes-Benz CLS550 smelling like gas could signal a gasoline leak which can present a significant fire hazard. Fuel leaks can be hidden in the engine bay and in the undercarriage and may not present themselves as fuel on the ground as gasoline can evaporate quickly.
A loose, damaged, or missing gas cap can lead to a gas smell around your vehicle. The odor may get into your car when you`re idling with the windows down. Similar to any other lid, the gas cap helps prevent the contents of your fuel from escaping in the form of a vapor.
Fuel Leaks

On most modern cars, fuel injectors located in the intake or inserted directly into the engine itself spray a precise amount of fuel during each cycle. If the seals around these injectors degrade, or a leak develops in a fuel line leading to the engine, you may be able to smell gas.

The most common reasons a Mercedes-Benz C250 smells like gas are the gas cap, the fuel system, or the emissions control system.
Gasoline odors can be caused by a leak somewhere in the fuel system, meaning gasoline can be dripping out. Some possibilities? It could be a break in a fuel line. You could have a leaky fuel-injection line or injector.
If vacuuming does not work, you can go for steam cleaning. It will take the smells out, even from the little places. Baking soda is beneficial for removing odors. Sprinkle some baking soda in the interiors of your car and leave it for a few hours.
If the smell of gasoline seems to be coming from the engine compartment, this could be a sign that there`s a leak in the fuel system. It is very important to have this checked out right away, as a leak in the fuel system could cause a fire under the hood.
There are three common reasons why your car smells of petrol: Petrol vapour from a leaking petrol cap. Liquid petrol leaking from a fuel injector. Petrol dripping from under the car/exhaust.
Bad fuel pressure – if your vehicle has as issue with fuel pressure it could lead to a smell of gas.
First, soak up the gas with old towels or clean rags as quickly as possible. Then use a mixture of equal parts baking soda, white vinegar and hot water to neutralize the odor. Rub it in and then wipe it away with a clean rag.
If you smell gas inside:

Go to a phone that is not near the smell and call your local gas company right away. (If the smell is strong or you are unsure, leave the building and then call.) They will come and make the area safe at no charge to you.

Old Mercedes cars have all the same leather, wood and gasoline or diesel smells that other high end cars do but they do have one distinct difference. The seat padding on old Mercedes cars is horse hair. that is probably the unique smell you`re thinking of.
If You Smell Gas Outdoors

If you`re in your garden or backyard and smell gas, report the leak immediately; don`t try to locate the source yourself. Stay away from the premises until your gas company arrives. Do not turn on the gas once it`s been shut off.

The Air-Fuel Ratio is Too Rich

When a rich mixture is injected, some of the gasoline may not be burned by combustion. When that happens, it can be released with the exhaust. If this happens, your exhaust will probably look black or dark grey, and you`ll likely smell gas when the engine is at idle or in traffic.

Most gasoline odors will dissipate within a few hours with proper ventilation. However, it can take several days or longer to go away, especially for large spills. Open windows and use fans to help increase ventilation as much as possible until the odor subsides.
A faulty fuel pump can cause all kinds of engine problems. This is because the fuel pump is responsible for the fuel delivery from the tank to the engine. The average lifespan of a fuel pump is 100,000 miles; most pumps last longer than that.
Bad fuel will have a darker or muddier appearance. It will also have a sour or disagreeable odor not typical of normal fuel. Some may even describe the gasoline as smelling spoiled. In all these cases, it is necessary to remove the bad fuel from the tank.
Why does my Mercedes-Benz A/C smell bad? Your Mercedes-Benz A/C builds up bacteria, which in turn, results in odor, staining, discoloration, mold and mildew.
The original version of THE MOVE blended cardamom, grapefruit and apple blossom with tonka bean and balsam fir, completed with a marine head note. As for THE MOVE Express Yourself, peppermint and sage meet green apple, pineapple, amber and patchouli for a very light, airy interpretation.
Yes, Mercedes-Benz is one of the leaders in the luxury car category. With every new model, the German automaker looks for innovative ways to outclass and outperform their competition—worthy foes like BMW, Genesis, Tesla, Audi, and more.
You can easily smell the fumes from these compounds as they are expelled from the vehicle`s exhaust. Additionally, depending on your car`s engine, various parts within the engine might also produce smells. For example, carburetors emit a sweet smell, while diesel engines often have a strong odor from combustion.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

The car smells of gas, probably has a leak
ANSWER : When an air conditioning refrigerant leak is being detected, a mechanic will often use an electronic leak detector that is specifically designed to ’sniff’ for a specific refrigerant. These electronic leak detectors are also made to detect fuel leaks. I would recommend locating a mechanic that owns one of these electronic leak detectors and enlisting their assistance in inspecting an oil/fluid leak. This would be the best chance at finding the leak considering that is is not large enough to be seen by multiple people.

Read Full Q/A … : Gas smell around car

Hello when i pump gas there is a strong gas smell and my car also shakes when i crank it upmy car smokes from the bottom when I t
ANSWER : If you are detecting a fuel odor, there is either a vapor leak (EVAP system), or a liquid fuel leak in your fuel system. To resolve that, the recommended service is a fuel leak diagnostic/repair. The smoke is from hot vaporizing oil and/or escaping antifreeze. Transmission fluid is a possibility but engine oil and power steering fluid could be leaking, too. The origin of the leak(s) can be pinpointed if you request a leak diagnostic. If you request these services, the responding certified mechanic will get this taken care of for you. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.

Read Full Q/A … : Gas smell around car

Soap smell coming out of car after cabin change. Changed filter the the smell is still coming. What to do about this strong smell?
ANSWER : Hi There,
As you know, your car has a cabin filter that serves to filter the air that is introduced to the cabin inside the vehicle. The best way to remove your cars interior ac odor is to use a cleaner that uses enzymes. Enzymes in cleaners kill odors at the source and completely kill the smelly substance material and therefore stopping the a bad smell. To get rid of the smell, try the following: First turn on the ac to full, make sure the “recirculate” button is not on, spray a large amount of cleaner with odor killing enzymes into the EXTERIOR air intakes that are located just below the windshield wipers, let the car run for about 10 minutes with the ac on, after 10 minutes turn off ac and spray the cleaner into the ac vents on the INSIDE of your car. After doing all this, let the car sit for 20 minutes turned off and windows rolled up. Then repeat if the smell is still in the car. By doing this you are killing the bacteria or mold in the car ac vent ducts and also the evaporator mold that may be present.

Read Full Q/A … : Gas smell around car

My car would not start. The ectricty is good. I put some chemical in the gas and the car start but the engine light still on.
ANSWER : Hi there. When you have an issue with start up that was "resolved" by adding a chemical in the fuel, that leads me to believe that either you have a fuel delivery problem (caused by a dirty fuel filter, clogged fuel injectors or throttle body) or an worn out ignition problem, caused by worn spark plugs. First and foremost, I would recommend AGAINST using a chemical additive to repair your vehicle (especially if it’s an ether product as this can cause a serious backfire and could create major engine damage). Instead, have one of our mobile mechanics come to your location and complete a car is hard to start inspection.

Read Full Q/A … : Gas smell around car

My car ran out of gas and now it will not start even after putting gas in the tank
ANSWER : If the starter motor itself is not functioning (i.e., no engine cranking), then the starter circuit has to be diagnosed. If the starter motor is functioning, but the car is not starting, you could have a circumstance where the fuel pump overheated because it was run dry. That could cause the pump impeller seal to fail. First, check for the characteristic, but momentary, whirring sound from the in-tank fuel pump at key "on". If no fuel pump operation is detected at key "on", check for battery voltage at the pump wire harness at key "on". If no voltage is detected, that circuit has to be diagnosed all the way back to the battery to find the fault. If there is power to the pump, but no momentary pump operation at key "on", the pump would be condemned and replaced. If the pump does operates, check fuel pressure in fuel rail to confirm that it is operating properly and supplying adequate pressure. If you desire that a certified mechanic resolve this, please request a no start diagnostic and the responding mechanic will get it diagnosed and repaired for you. Please let us know if you have further concerns or questions as we are always here to help you.

Read Full Q/A … : Gas smell around car

My car got towed and now when I hit the gas, something sounds loose, and there is a lot of clanging around the front of my car
ANSWER : Hi there. Unfortunately, this happens far too frequently with many towing companies. Most of the time, the component that becomes loose is the front engine cover, which is located underneath the radiator and front section of the vehicle. In other instances, a bracket or other item can be bent, and cause a pretty loud rattle to be present when driving the vehicle. It’s probably a good idea to have a professional mechanic come to your location and complete a car is making a noise inspection, so they can isolate the source of this noise and recommend the correct repairs.

Read Full Q/A … : Gas smell around car

What’s going on when gas is constantly slowly leaking from where the gas cap is and the cap was not under pressure when opening?
ANSWER : It is possible the tank was filled too much, that is the gas pump did not shut down when it should. Even if gasoline was not filled right to the top, thermal expansion can later cause the gas to overflow if the tank gets warmer and pressure builds. The too high level will subside quickly as all you have to do is drive 25 miles or so to lose a gallon. If you believe there is a leak or other issue, a certified Mechanic from YourMechanic can perform a leak inspection during a mobile visit.

Read Full Q/A … : Gas smell around car

When I crank my car it won’t keep running unless I keep my foot on the gas. As soon as I release the gas pedal my car stops running
ANSWER : The first thing you need to check for in a case like yours is air leaks. Check all the rubber parts and hoses under the hood for good condition and connection. The amount of fuel delivered to your engine is determined by the air that flows in and any air that gets in through a leak without being measured means less fuel being injected. There are of course a number of other possible causes; a failed Mass Air Flow Sensor for example, but they will require special skills and equipment to be examined. You can have this conveniently checked out by contacting Your Mechanic. They can send a technician to your home or office to check out your car and let you know exactly what it will take to solve your problem.

Read Full Q/A … : Gas smell around car