Diagnose: code P05271 - Positive Crankcase Ventilation Regulator Valve Performance: The valve for crankcase ventilation has a malfunction. Mercedes Benz extended warranty to 15 yr / 150k miles for intake assemble which resolve this issue. Like to acquire a confirmation letter from Benz to cover the repair by the Benz dealer

- Vernon, CT, USA

Sunroof. The sunroof is not opening properly. It sounds Ike the window is going to come off of its track. Making a loud noise.

- Villa Rica, GA, USA

A notice was issued for a common issue with many Mercedes Benz models. https://static.nhtsa.gov/odi/tsbs/2023/MC-10243565-0001.pdf A notice was issued for a common issue with many Mercedes Benz models. [XXX] While the problem is well known, all dealers are reporting the part is in back order without any visibility on when it would be available. This is forcing drivers, including myself to continue to drive the car and potentially creating a big damage to the car. I took the car to Mercedes-Benz of New Rochelle in NY state. I called multiple dealerships in the tri-state are and they all mentioned that the issue was well known without any ETA. Also with a check engine light the car can't pass safety/emission inspection and is not sellable. I bought a new car, can't sell this car and have 0 visibility on when I can get it fixed to sell it. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

- Scarsdale, NY, USA

See attached document for complaint

- Philadelphia, PA, USA

I own a 2016 Mercedes Benz GLC 300 and I-??ve noticed that a strong gas smell when I start the car during cold weather. You notice the smell outside and inside the cabin as well as it comes in through the vents.

- Suffern, NY, USA

According to NHSTA ID 21V197000 bulletin, my 2016 GLC 300 qualifies for recall related to sunroof safety matter. My sunroof is loose and dealer said since your organization didn-??t include my VIN for this recall, they will not address it. Can you please add my VIN. I-??m experiencing exactly as described in your recall bulletin. Thank you!

- Englewood Cliffs, NJ, USA

While driving my car, I tried to open the Panamatic sun roof to get air. As I pushed the button to open the sun roof, it opened a crack on the the driver side and the other side of the sun roof stayed closed. At this point I heard a crashing assembly noise and the whole sun roof got stuck uneven and crooked. Driving on highway, I was shocked and felt in danger getting to an automobile accident and getting hit by other cars or any loose parts hitting them. Getting myself together, I pulled over and got out of the highway. I parked and tried to understand what happened. I tried to close the partially opened on one side glass roof with no avail. It was totally stuck. I parked my car and went home. A day after the incident, I had the car towed to an authorized repair shop for investigation and repair. It took two days to repair and replace all of the roof railing assemblies. A copy of the invoice is enclosed. It was a very dangerous and traumatic experience for me and I truly felt in this incident, I could have hurt other people or got myself in a bad accident.

- Loxahatchee, FL, USA

Driving down the expressway at 4 AM when the car had a message and read saying do not change gears alert. I hardly got over to the emergency lane when all systems did not work. The axle, differential and oil pan broke. Had to be towed after waiting 2 1/2 hours for a tow.

- Loveland, OH, USA

Faulty crankcase vent valve causing oil to leak into electrical lines of engine with car at 42,000 miles. This was confirmed by dealer. Multiple other Mercedes Benz car owners have had this issue with the crankcase vent valve with simple internet search. Fortunately, the car was taken to dealer before any event occurred but this a safety issue.

- Eastampton, NJ, USA

Crank case vent valve went out. Then turbo went out after that. Car smells of gasoline inside cabin.

- Alexandria, LA, USA

check engine light comes one and give code: P052E - Positive Crankcase Ventilation Regulator Valve This is a faulty part that commonly breaks down in all Mercedes GLC 300 and C class. It's part of the emissions system and should be covered under the federal warranty. However, Mercedes won't cover it and charges $3000 for the repair. This is unsafe and unfair practice as they're selling vehicles that they know will break down eventually and could cause harm to their "customers".

- West Boylston, MA, USA

At ~40,000 miles my check engine light came on. I took it into the shop for a diagnostic and they informed me that I need to replace the Positive Crankcase ventilation valve/Air Intake Hose. They told me that this is a common issue with this make of Mercedes and that they have done about 4 in just the past few months. Furthermore, they told me that this issue has been fixed on newer models of the same vehicle. This seems like the responsibility of Mercedes to fix this known issue with their car via a recall.

- Arlington, VA, USA

My cars front stationary sunroof panel came off completely while driving on the highway. I have called Mercedes Benz recall department and I have gone to the dealership and the repairs are not variable at the moment due to the recall being pending still. My car is getting wet due to the tropical rain in Florida.

- Naples, FL, USA

I was on my way to jury duty when the sensor which regulates acceleration went out. This nearly prevented the safe driving, speed control and acceleration of the vehicle. I was trying to enter the freeway on one of the busiest freeways in the area of pearland, tx. I was so frantic, I began to cry and prayed to reach the exit nearest my home and immediately pulled into the Goodyear auto center. I paid for the repair out- of-pocket because I had no choice. The vehicle was unsafe to drive, the nearest mb dealership is approximately 20 miles away.

- Pearland, TX, USA

In motion on the highway the glass sunroof panel detached from the vehicle, there's nothing that I did that could have caused that piece to detach the way it did. I have seen recalls for other model vehicles for Mercedes-Benz for this same reason.

- Miramar, FL, USA

When I start my car there is strong gas odor in the cabin for the first 3-4 hours of driving. Also there is a moldy smell in the warmer months as well

- Hobbs, NM, USA

Since we purchased this car in December 2015, we have had a series of electrical and engine problems that do not seem to fixable by the dealer. The car was serviced (3 years or 30,000 miles) consumer also had issues with faulty radar sensor, power control unit, engine light, and faulty crankcase vent system.

- Sartell, MN, USA

With the introduction of self driving features new passernger saftey regulations are needed. My car, an added feature, is distronic safety system, self drive mode. When the car is at acomplete stop it will sense if some is about to rear end you. The car completely locks down. With impact the passengers in the vechile take a full body impact. The current seatbelts do protect the left side of the body but the right side gets sever damage. Harness seat belts such as race car drivers us or children car seat would minimize right body injures. This feature equates the impact to hitting a brick wall. My accident was on a busy highway.

- Atlanta, GA, USA

Panoramic sunroof shattered and exploded without warning, without any external impact seen, felt or heard. Vehicle was moving on rural highway (flat farmland) around 55-60 mph. External temperature above 100 degrees. Highway traffic normal, not dense or empty. Odometer at 12,000 miles. Hazard due to defective/ insufficiently strong sunroof glass.

- Portland, OR, USA

At 7:30 am on June 10, 2016, while driving North on rte. 495 in Delaware in our 5-month-old mb - glc 300, the panoramic sunroof suddenly and without any warning exploded and shattered outward. The sound was as loud as a bomb. As shown in the photographs, nearly all the sunroof was blown out, with only a little glass remaining around the frame. The shattered glass fragments either flew off or settled on top of the shade screen. We were driving at approximately 65 mph and there were no cars directly in front of us or behind. We had the air conditioning system on with the outside temperature at about 70F. It was a clear morning and the sun had just risen. Our mb dealer in germantown, md said they were not aware of other instances of exploding glass sunroofs

- Chevy Chase, MD, USA