Other Fuel System Tank Assembly Problems of Mercedes Benz CLS550

Fuel leak into rear driver side back seat from below. Gas leaked into passenger cabin due to a seal that broke from gas tank. Dangerous smell and fire hazard. Leak happens all the time, when parked and especially when driving. Mbusa and dealerships not accepting the defect and design flaw that causes gas to sputter into passenger cabin when driving.

See all problems of the 2012 Mercedes Benz CLS550 🔎.

While vehicle was stationary in garage, we began noticing a profuse gas/fuel smell. It became increasingly strong in and out of the vehicle. Approximately 3 days after smell was noticed, I contacted the local Mercedes Benz dealership to advise of the issue. I also did some research online, and discovered that previous years specifically; 2006-2011 cls class vehicles exhibited the same defect which was addressed with the NHTSA and to which mb-USA agreed to extend the warranty for "covered fuel tank components" from the original 4 years to 15 years. The dealership diagnosed the left side sender unit to be cracked and leaking fuel, which is one of the covered components. However, they advised that my car was not covered due to the age of the vehicle (I. E. It being newer). As such, I had to pay for the repairs to the vehicle as well as vehicle rental needed during the time of repairs. The strong odor and fumes of fuel stemming from a component defect poses a severe safety and health hazard, while vehicle is stationary or in motion. There is a potential for ignition from stray sources, dizziness, headaches, etc. This is a quality defect that should be the responsibility of the car manufacturer to correct. Please advise as a recall is warranted.

See all problems of the 2014 Mercedes Benz CLS550 🔎.

Fuel leak from unknown part of the tank.

"fuel leaking from gas tank" after smelling a strong fuel smell both inside and out side my vehicle I took to mercedes 9/17/18 to see if they knew of the issue of if there was some type or recall on my vehicle regarding a fuel issue. The smell always seemed stronger after I put in a full tank of gas. They did a visual inspection and told me they see fuel leaking from my vehicle and that there was no fuel related recall. They wanted to charge me $185 just to see what the actual problem was and didn't really have a concern if the vehicle was safe to drive or not. So I took my car to a local auto shop to do an oil change and to look into the fuel issue. As I was in the waiting area while my vehicle was being looked at the shop owner came in and asked if he could save my life? I then followed him to the garage bay where he showed me a pool of gasoline sitting on top of the fuel tank underneath my driver side rear passenger seat. My gas tank had been leaking and collecting fuel on top of the tank. The over flow of the leak was pouring underneath my car and onto the hot exhaust. This has apparently been a know issue at mercedes but they have done nothing about it. Total disregard for safety or human life.

Note that the vehicle on has 43,733 miles - cabin interior strong live fuel fumes - constant gas fumes on the inside of the car cabin. Note that the car was stationary at my residence parking. I did not know where were the fumes coming from at the time. Got a headache just for the moment I was trying to determined where were the fumes coming from. This is currently for all drivers and owners a very hazardous dangerous condition to all extremes, very high risk from ignition from static or electrical, due to wire hardness in the area. Vehicle was towed and took it to Mercedes Benz dealer and found the following: leakage in fuel system. Replaced fuel tank fuel tank drain/fill observed accident prevention regulation "12 wl08" fuel tank and fuel for storagebring observe accident prevention regulation "12 wl08" performed by mercedes-benz of new orleans. Fuel tank leaking in the interior was found / was drained & refilled and fuel tank replaced. This was cover under a new settlement with Mercedes Benz and NHTSA. I think that this should have been a recall when it relates to safety factors.

See all problems of the 2007 Mercedes Benz CLS550 🔎.

The contact owns a 2007 mercedes-benz Cls550. When the contact entered the vehicle, a fuel odor was noticed without warning. The failure recurred. The vehicle was taken to an independent mechanic who diagnosed that the fuel tank was cracked and leaked fuel. The manufacturer was made aware of the failure and stated that there was no recall. The manufacturer stated that the vehicle would be repaired for free if the contact took the vehicle to a mercedes dealer. The vehicle was not repaired. The failure mileage was approximately 200,000. The VIN was not provided.

Hi I have 2007 mercedes Cls550 79000 miles. I had the car for past 2 years are week ago after refiling the gas tank are strong gas smell appear inside the car and out side also. I was worry for my safety and I start reading about the same problems and current campaign and recall for mercedes e class w211 2003 to 2009 so I remove my rear passenger seat to locate the pump and the sending unit there was big puddle of raw gasoline inside the cabin around 200-300ml there was so much there the wires for the pump and sensors was under the fuel. I called the dealer they refuse to do recall for my car my car use the same gas tank and same pump and sending unit like e class from 2003 to 2008. . So if one part is defective(the gas tank) will be still defective if mercedes put in different model car. My car is not safe any more im scary to drive it any more .

On may 19, 2014 I purchased a 2009 mercedes Cls550 from mossy Ford dealership in san diego, CA with a guarantee of no current or pre-existing mechanical or hazard issues. Days after purchase I noticed acceleration issues, strong odor of fuel or chemicals, engine noise and gas efficiency problems. I contacted the dealership and asked to return the vehicle and also cancel the sales contract but was denied. I was asked to bring in the vehicle and the gas tank was filled by the dealership stating that problems were likely caused by low fuel as the car was purchased with 1/4 tank of fuel. This did not fix the issues. I attempted to cancel payment and asked to return the vehicle due to continued issues and was again denied. Due to the vehicle mechanical faults when purchased direct exposure of fatal carbon monoxide poisons and harmful gas emissions from the mercedes caused severe illness and life threatening symptoms including headaches, dizziness, nausea, fatigue, and fever that quickly escalated to major health problems for my family including my three minor children. The dealership knew the vehicle was unsafe and faulty but failed to disclose. The vehicle failed the California emissions test right before purchase followed by a passing test the same day. The service repair history shows the current problems have been ongoing concerns. On June 25, 2014 my minor son was near death and admitted to the children's hospital critical care unit with nausea,vision problems, eyes sunk in, vomiting, headaches, extreme weight loss, fatigue, excessively high blood sugar reading over 800, pancreas damage/failure, breathing problems, dehydration, dizziness and unconsciousness, hemoglobin, myoglobin and beta cell damage, fever,chills, chest pain, brain malfunction, seizure, hypoxia, keystones, carboxyhaemoglobin and toxins in blood. The vehicle sold is a health and safety hazard.

See all problems of the 2009 Mercedes Benz CLS550 🔎.

The contact owns a 2008 mercedes-benz 550 cls. The contact stated that fuel could be smelled inside the vehicle while driving and while the vehicle was sitting in park. The contact took the vehicle to a dealer for a diagnostic test. The test results showed that a vent inside the fuel tank was defective and needed to be replaced. The contact did not have the vent replaced. The contact called the manufacturer. The manufacturer advised that the failure had become a common problem for the particular year, make and model but a recall had not been issued. The vehicle was not repaired. The failure mileage was 30,000.

See all problems of the 2008 Mercedes Benz CLS550 🔎.

Every time I fill up my tank with gasoline, once I park in the garage, the garage is filled with strong gas fumes from my car. I checked for leaks under the car and found nothing. I have to raise the garage door to let the fumes out, due to getting lightheaded from the fumes. The fumes remain with the car for 7-10 days. This has been going on for the past four years. This problem is a danger to my family's health!!!! surely, there is a recall on this problem! 2nd issue: I turned my car off and the fan kept running. I noticed that the fan was so loud that it sounded like it was about to blow up. Black smoke came from under the hood. I went on into the building to my meeting for an hour. When I came back outside, the fan was still going and still loud. This had never happened in the five years that I had the car. The car would not start. I had to call someone to boost it off to start. I then went to the shop to check to see if I had battery or starter problems. No problems found in either. This has happened twice since then. I am afraid that the car will catch fire with me in it or my family or friends. 3rd issue I was driving along and the dashboard read out in red to stop the car . . Vehicle is too low. . . When stopped, I noticed that the passenger side of the car was low and the driver side is raised high. I have to sit there for a few minutes until the red lights went out. This happens often. 4th tire pressure light stays on. I took it to check on pressure, it was ok. I did not need new tires either. The yellow light stays on and this week the red light popped on and will not go off. 5th the check engine light stays on and mechanic can not find the problem. 6th steering system loud popping noise when I back up or turn steering wheel. It used to be random but now it is every time I drive the car.

When ii fill my gas tank I smell gas fumes in and around the vehicle. The smell is coming from the rear passenger seat on the drivers side. I had the vehicle checked by a mercedes mechanic who is a friend of mine and he said it is the fuel sending unit. He pulled out my seat and their was a puddle of gas on top of the unit. When I fill my tank to under 3/4 there is no smell. I have researched this issue and apparently there is an on going investigation by NHTSA regarding the e series mercedes which has this problem. The cls 550 is on the same platform as the e series. I have called the dealer and am playing phone tag with the service department. Please include the 2007 cls 550 in your investigation.

Filled the gas tank. I drove 2 miles to my house, and parked the car in the garage. Fuel started leaking from the fuel tank directly behind the left rear wheel. The fuel fumes filled my house.

I pulled into a service station to fill my tank. After adding fuel to capacity I began to smell fuel in the passenger compartment. I attributed the smell to possibly spilling fuel on myself. I drove the vehicle to work and then home. The next morning I continued to smell fuel in the passenger compartment. I took the vehicle to the dealer for diagnosis and was told that there was a leak in the tank that was splashing / venting into the passenger compartment. The service technician shared that this was a common problem with the cls.