Mercedes-Benz R-Class Complaints

235 consumer complaints on file.

#11672152July 9, 2025
SERVICE BRAKES
The brake fluid lines are corroding much faster than in other models, and without actual corrosion under the car. It happened to my car, and I have been reading forums of MB owners of this same R model, as well as C, E, GLK, and ML models all reporting the same issues. The lines corroding earlier to due to the brake boost system failure and other fluids/air entering the system is the most consistent cause of brake line failure I was able to get off the internet, as well as MB not using lines with proper material. The only thing I know is that the lines are not supposed to fail this early and this bad. It happened while driving north on [XXX] in NY INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11549505October 11, 2023
ENGINE
Error codes P0016 and P0017 camshaft out of alignment and vehicle will not pass smog test, also loss of power of the engine.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11549143October 10, 2023
SERVICE BRAKES, HYDRAULIC
The contact owns a 2011 Mercedes-Benz R350. The contact received notification of NHTSA Campaign Number: 22V315000 (Service Brakes, Hydraulic) however, the part to do the repair was unavailable. The contact stated that the manufacturer 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. Parts distribution disconnect.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11532409July 15, 2023
SERVICE BRAKES, AIR BAGS, BACK OVER PREVENTION: WARNINGS
Pressed down on braked and nothing happened. Pressed down on emergency break to aid in stopping. No warning lights or sounds
Crash:
Yes
Fire:
No
Injuries:
2
Deaths:
0
#11515770April 6, 2023
SERVICE BRAKES
I called the Dealership to schedule the appointment. They told me they have no appointment available for next 3 weeks and even I wait for that long they will not be able to provide me a loaner car. The total job time is 4-6hrs I am not willing to wait that long. This dealership was not helpful at all in-spite of this is a very serious safety concern. STOP DRIVE REMEDY. Worst Customer Service for the brand we have.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11509176February 26, 2023
STRUCTURE:BODY
Rear Panoramic Roof Glass Cracks
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11502857January 20, 2023
SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
The contact owns a 2010 Mercedes-Benz R350. The contact stated that while driving at an undisclosed speed, the brake pedal was depressed and became stiff. The vehicle was taken to the dealer and diagnosed with a faulty brake booster. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 130,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11501416January 12, 2023
SERVICE BRAKES, HYDRAULIC
The contact owns a 2011 Mercedes-Benz R350. The contact received notification of NHTSA Campaign Number: 22V315000 (Service Brakes, Hydraulic) however, the part to do the recall repair was not yet available. The local dealer was 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. Parts distribution disconnect.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11501488January 12, 2023
SERVICE BRAKES, HYDRAULIC
The contact owns a 2010 Mercedes-Benz R350. The contact stated while driving 5 MPH, the vehicle made a squishing an abnormal knocking sound. The contact stated that as the speed increased to 15-20 MPH, the issue ceased. The contact stated that upon driving for an extended period, the brake pedal became stiff. The brake warning light was illuminated. The contact later received notification of NHTSA Campaign Number: 22V315000 (Service Brakes, Hydraulic) however, the dealer declined to honor the recall repair because the original brake booster had been replaced by the previous owner. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was notified of the failure and informed the contact that the dealer needed to complete the recall repair. The vehicle was not repaired. The failure mileage was approximately 120,000. Parts distribution disconnect.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11492743November 8, 2022
SERVICE BRAKES, HYDRAULIC
The contact owns a 2010 Mercedes-Benz R350. The contact received notification of NHTSA Campaign Number: 22V315000 (Service Brakes, Hydraulic) however, the part to do the recall repair was not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the issue. The contact had not experienced a failure. Parts distribution disconnect.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11488498October 8, 2022
POWER TRAIN, ENGINE, SERVICE BRAKES
UNKNOWN
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11483348September 7, 2022
SERVICE BRAKES
The contact owned a 2007 Mercedes-Benz R350. The contact stated while driving at 65 MPH and approaching traffic, another vehicle crashed into the rear of his vehicle. The contact slammed on the brakes but the brake pedal failed to respond, causing the front of the vehicle to crash into a second vehicle. The air bags deployed. The passengers of the second vehicle did not sustain any injuries. The contact sustained a chest burn but did not seek medical assistance. A police report was filed. The vehicle was towed to an autobody repair shop but was not diagnosed or repaired. The dealer was notified of the failure. The contact later received recall notification of NHTSA Campaign Number: 22V315000 (Service Brakes, Hydraulic), which he associated with the failure. The manufacturer was not notified of the failure. The failure mileage was approximately 70,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11483031September 6, 2022
SERVICE BRAKES, HYDRAULIC
The contact owns a 2006 Mercedes-Benz R350. The contact received notification of NHTSA Campaign Number: 22V315000 (Service Brakes, Hydraulic) however, the part to do the recall repair was not yet available. The dealer was made aware of the issue. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The contact had not experienced a failure. Parts distribution disconnect
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11483064September 6, 2022
SERVICE BRAKES, HYDRAULIC
The contact owns a 2008 Mercedes-Benz R350. The contact received notification of NHTSA Campaign Number: 22V315000 (Service Brakes, Hydraulic) however, the part to do the recall repair was not yet available. The dealer was made aware of the issue. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The contact had not experienced a failure. VIN tool confirms parts not available.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11480317August 20, 2022
SERVICE BRAKES
Hi I received a letter from Mercedes for a stop drive recall (NHTSA #22V315, MBUSA ID: 2022050014 & 2022050015), so I bought my Mercedes R350 to the shop for repair on July 15, 2022. Mercedes Benz of Pleasanton (925463-2525) claimed that brake booster parts were not available at that time and I couldn't drive the car, so they left the car at the shop waiting for the parts to become available. Later on when I called, the service rep claimed the parts had been ordered so kept my car in their lot (since July 15, 2022) Since then, I have been on the rental car (that I am still paying for) and I reached out to them multiple times and couldn't get a status update from them, nor schedule for my car return. I Hope NHTSA can help me to receive an update of my recalled vehicle, and their solution. I don't know how long do I need to use rental car. I would like to file an official complaint to Mercedes Benz USA. They don't seem to know how to handle their own recall. Thank you in advance. [XXX] INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11472772July 7, 2022
SERVICE BRAKES, HYDRAULIC
The contact owns a 2012 Mercedes-Benz R350. The contact received notification of NHTSA Campaign Number: 22V315000 (Service Brakes, Hydraulic) however, the part to do the recall repair was unavailable. 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 stated that the rear end of the vehicle was making a grinding sound while the brake pedal was depressed. The contact took the vehicle to the dealer who completed the inspection mentioned in the recall and concluded that a replacement was needed. The approximate failure mileage was 185,000. Parts distribution disconnect.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11470159June 20, 2022
ENGINE
My car has stalled several times, either when I am driving, or when I stop at a traffic light. Rough idling and/or running when stopped at a red light or driving at speeds that wouldn’t normally be an issue. Engine stalling or misfiring, and car sometimes have trouble starting up. Loud rattling or vibrating noises from the engine. The check engine light is turned on. I took it to Mercedes Benz Dealership in Brooklyn, NY and was told it is a Balance Shaft problem, and they told me it could cost me about $9,000.00. Further research informs me that the problem should not be ignored, nor repair put off. Also, that failure of the balance shaft leaves the inner components of the engine unsecured and therefore will ultimately result in damage to the engine if left unchecked. Also, that driving at high speeds for long periods can agitate the problem even further due to the constant vibrations without a proper securing mechanism. As a result, I parked my car for several months, since I cannot afford the amount they quoted. In essence, I cannot even enjoy the car I bought.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11468335June 8, 2022
SERVICE BRAKES
Every time I braked, car not stop until very close to the car in front of me. Couples time I hit the car in front of me. Sometime I have to slam the brakes very hard, but the car still move forward.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11465851May 23, 2022
SERVICE BRAKES, SUSPENSION
I DROVE TO WORK WITH NO PROBLEMS. HOWEVER; RETURNING I STARTED CAR AND COULD HEAR A SLIGHT SOUND. I IMMEDIATELY NOTICED THAT THE CAR RISING SIGN WAS ILLUMINATED AND I WAITED FOR CAR TO RISE. THE CAR FAILED TO RISE AND WAS SITTING SO LOW TO TIRES THAT I COULD NOT DRIVE AND HAD TO BE TOWED HOME. AT HOME I TRIED AGAIN TO SEE IF CAR WOULD RISE AND AGAIN IT FAILED. IN ADDITION TO THE ABS BREAK SIGN BEING ILLUMINATED AS WELL. THE MESSAGE ON DASH STATED TO CONTACT DEALERSHIP FOR SERVICE. MY MILEAGE IS AT132,051.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11464470May 13, 2022
SERVICE BRAKES
I have tried, since 730 this morning to find out what can be done with regard to the recall of my car. I contacted my dealer - Faulkner Mercedes in Doylestown.... who explained that they couldn't do anything, as they have neither the tools nor the parts to address this issue, and won't have for quite some time, and that I needed to call the Mercedes recall hotline. Which, I did. While on hold for about 40 minutes to get through to someone, they took my information and told me that there was nothing that could be done, because the "Recall hadn't been launched yet" and that it would be a few weeks before I'd get a letter in the mail telling me what I needed to do. This is absurd. First off, most people will give up and not wait on hold and keep driving, and second, I need my car, as do the other 292,000 drivers - and these people can't wait weeks to get a letter. Most will have no alternative but to drive them while waiting for Mercedes to address this problem. Mercedes needs to provide loaner cars, and needs to do so, immediately.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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