2022 Mercedes-Benz GLC300 Fuel System Problems

Owner reports

Selected complaints filed with NHTSA by 2022 Mercedes-Benz GLC300 owners, lightly cleaned up (personal details are redacted by NHTSA).

The contact owned a 2022 Mercedes-Benz GLC300. The contact stated while driving approximately 30 MPH, the steering wheel lurched to the right direction. The contact stated no warning light was illuminated. The contact stated that the front passenger side of her vehicle crashed into a parked vehicle hitting the left passenger door and tire wheel. The contact stated that the vehicle stopped and the engine stalled. The contact stated she had to kick the driver's side window out to exit the vehicle. The contact later saw that she had bruising on both her thighs and shins, but no other injuries. The police arrived on the scene and had the vehicle towed to an impound lot. The contact had not taken the vehicle to a local dealer or repair center. The vehicle had not been diagnosed or repaired. …

My 2022 Mercedes-Benz GLC 300 has been diagnosed with a valve seat failure. This requires a full cylinder head replacement. I purchased this vehicle brand new and have driven it with care, putting approximately 60,000 mostly highway miles on it. Throughout my ownership, I have exclusively used the service at an authorized Mercedes-Benz dealership. Despite my efforts to maintain this vehicle properly, the vehicle began exhibiting misfire issues just outside of the warranty period. The check engine light would flash on and off during a misfire and it presented multiple codes. I returned to a Mercedes-Benz dealership, where I was told the issue is an internal mechanical failure, worn or leaking valve seats requiring full cylinder head replacement with an estimated repair cost of $7,800. …

My 2022 Mercedes-Benz GLC 300 (17,700 total miles) suffered a catastrophic structural engine block failure and an explosive loss of propulsion while driving at highway speeds. This occurred exactly 6 days and 183 miles after a franchised Mercedes-Benz dealership performed the official fuel pump impeller safety recall (NHTSA Campaign 23V-445).The dealership's official repair invoice documents that the technician custom-modified the recall remedy by reusing parts, explicitly stating: 'Relocated floater from old pump onto new fuel pump.' Simultaneously with the mechanical engine failure, a 'Reduce Engine Oil Level' message flashed on the dashboard, indicating severe fuel dilution from the compromised fuel system.The dealership is actively violating federal recall mandates by refusing to investigate this failed safety remedy unless I sign an open-ended financial check for a diagnostic and …

The contact owns a 2022 Mercedes-Benz GLC300. The contact stated that while driving at various speeds and depressing the accelerator pedal, the check engine warning light was displayed on the instrument panel. The vehicle lost power and was pulled over and restarted. The contact was almost involved in several crashes due to the failure. The vehicle was included in NHTSA Campaign Number: 23V445000 (Fuel System, Gasoline); however, the vehicle was repaired, and the failure persisted. The vehicle was taken to the dealer on several occasions, where the fuel pump, charcoal filter, and other various parts of the fuel pump were repaired; however, the failure persisted. The manufacturer was notified of the failure, and the contact was informed that the cylinder head would be replaced free of charge. The contact believed that the vehicle was unsafe to drive due to the failures. …

The car randomly shows an empty tank of gas at the start of the day, when there was a half tank of gas remaining. I filled the gas, but the car did not register any fuel-up and kept showing empty. I took it to the dealer for repair and the fuel tank sensor was replaced under warranty a month ago. Now, this week the same issue reappeared. The car began showing no gas in the tank on a random morning last week and remained driveable for a couple of days. The gas levels reappeared corrected on day #3. Today, 4 days later, the car went back to showing zero gas, and shut off while I was driving on an expressway with my minor child in the car. All of the lights on the dash lit up, and the car stopped. It is immovable. It could have caused a severe or fatal accident and this is totally unacceptable!! …

Vehicle loses power, my vehicle stop on the highway going 55 miles per hour, I came very close to being rear ended. My vehicle consumes excessive fuel, the vehicle quicks back upon acceleration. This causes a great concern as I used my vehicle for work. I attempted to have the dealer resolve this and I was told that there was nothing they could do. However, this faulty performance might cause a traffic accident and I could also involve the life of myself or another individual in the vicinity of my vehicle. The vehicle also has a late start which is also a problem while driving. I do not feel safe driving this vehicle as I fear for my life and the life of others.

I was driving back to my house in york, PA. My car all the sudden changed the gear from "D" to "N". My gas meter was showing 106 miles. my didn't give sign or alert before it shifted the gear from D to N. I was driving on highway and this was major safety concern as I could have hit by cars coming on highway speed. We had this similar incident last year as well but we were at traffic light stopped so we didn't realize that time that car shift the grear by itself. Once we fill the gas, we were able to drive back home but it was scary and big safety concern that car doesn't give any notification or alert for low fuel and change gear all the sudden.

Mientras el vehiculo se encuentra en la carretera comienza a dar un fallo (halones y vibracion) y pierde la fuerza (velocidad) provocando la desaceleracion. Las luces en el panel se encienden y es necesario salirse de la via de rodaje inmediatamente para estacionarlo. Esto pone en riesgo la seguridad de los ocupantes del vehiculo y de los ocupantes de los demas vehiculos, ya que al desaclerarse repentinamente puede provocar que el vehiculo sea impactado por otro. Si nos encontramos entrando a otra carretera, que requiera hacerlo rapidamente, baja la velocidad y puede provocar ser impactado.

The contact owns a 2022 Mercedes-Benz GLC300. The contact received notification of NHTSA Campaign Number: 23V445000 (Fuel System, Gasoline) however, the part to do the recall repair was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The dealer was made aware of the issue and confirmed that parts were not yet available. The manufacturer was made aware of the issue and confirmed that parts were not yet available. The contact had not experienced a failure. VIN tool confirms parts not available.

The contact's wife owns a 2022 Mercedes-Benz GLC300. The contact's wife received notification of NHTSA Campaign Number: 23V445000 (Fuel System, Gasoline) however, the part to do the recall repair was not yet available. The local dealer was not contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure. VIN tool confirms parts not available.

Related recalls

Fuel System complaints in other GLC300 years