Mercedes-Benz E-Class Complaints

3,253 consumer complaints on file.

#11662824May 23, 2025
ELECTRICAL SYSTEM
I am submitting this complaint regarding serious and repeated electronic failures in my 2023 Mercedes-Benz E 450 that pose a significant safety risk to myself and other drivers on the road. The vehicle has experienced complete dashboard failures on multiple occasions, including the loss of speedometer, fuel gauge, and gear shift indicators. Most critically, the vehicle recently shut down while in motion, displaying a “malfunction” warning and disabling the electronic steering system. I was unable to maneuver the vehicle off the road, creating an extremely dangerous situation. This vehicle has been brought to the dealership three or more times for the same issue, with no permanent resolution. I believe this constitutes a serious safety defect. I respectfully request that the NHTSA investigate this matter as a potential recall issue.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11662587May 22, 2025
AIR BAGS, POWER TRAIN
While driving a 2008 Mercedes-Benz E350 on 5/21/2025 around 1:50pm, the transmission suddenly failed while I was traveling at approximately 75 mph was on highway 76. As a result of the failure, the driver's side airbag deployed unexpectedly.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11661609May 17, 2025
ELECTRICAL SYSTEM, STEERING
Steering wheel lock module steering wheel was locked in place and vehicle wouldn’t do anything.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11661309May 15, 2025
UNKNOWN OR OTHER
Sunroof shattered.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11660857May 14, 2025
AIR BAGS, UNKNOWN OR OTHER, STRUCTURE:BODY
Panoramic Sunroof bonding and bolts loose causing constant horrific cracking/clanking sounds due to shifting of glass. Possible frame and airbag damage, possible glass falling, possible injury/accident/death. Can cause issues with airbags deploying and water leaks. Mercedes mechanic said it's the worst case/noise he has heard in any Mercedes. Same make/year/model has been recalled in other plants. Also, walnut trim has faded tremendously.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11660892May 14, 2025
POWER TRAIN, ENGINE
Mercedes-Benz E300 is affected by a Transmission Control Module (TCM) recall, you might notice these symptoms: - Delayed or rough shifting: The transmission may hesitate or struggle to change gears. - Slipping gears: The car might unexpectedly shift out of gear or fail to stay in the correct gear. - Unresponsive transmission: You may experience difficulty accelerating or feel like the car is stuck in a lower gear. - Warning lights: The check engine or transmission warning light may illuminate on the dashboard. - Limp mode activation: The vehicle may enter a fail-safe mode, restricting speed and performance to prevent further damage.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11660928May 14, 2025
POWER TRAIN
The contact owns a 2017 Mercedes-Benz E300. The contact stated while driving approximately 40 MPH, the accelerator pedal was depressed; however, the vehicle hesitated before shifting to a higher gear. The contact stated that the transmission was also slipping out of gear, and the vehicle shifted into LIMP Mode. The contact stated that several unknown warning lights were illuminated. The contact stated that the transmission was not shifting above second gear. The contact had the vehicle towed to a local dealer who diagnosed the vehicle and determined that the transmission control module (TCM) had failed and needed to be replaced. The vehicle was being repaired. The manufacturer was informed of the failure. The contact researched online and related the failure to NHTSA Campaign Number: 17V078000 (Power Train); however, the VIN was not included in the recall. The failure mileage was approximately 100,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11659433May 7, 2025
STRUCTURE:FRAME AND MEMBERS
The contact owns a 2014 Mercedes-Benz E350. The vehicle was taken to the local dealer for routine maintenance, and it was determined that the entire rear sub frame was rusted. Additionally, all four brake lines were rusted. The contact stated that the warranty was extended on the frame rust. The dealer determined that there was no recall on the VIN. The manufacturer was contacted and confirmed there was no coverage for the repair on the vehicle. The failure mileage was approximately 92,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11658966May 5, 2025
FUEL/PROPULSION SYSTEM
I had a sudden smell of fuel when I looked outside the vehicle I noticed a leak under driver side back seat area under vehicle
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11658594May 2, 2025
ELECTRICAL SYSTEM, VEHICLE SPEED CONTROL, POWER TRAIN
The primary failure involved the electrical system and speed control, which posed a significant safety risk to myself and other drivers. The issue first presented itself when I noticed intermittent warning lights and error messages flashing on the dashboard, including indicators for the electronic stability program (ESP), steering assist, and lane tracking features. These malfunctions created erratic driving conditions, including unexpected acceleration delays and inconsistent cruise control behavior. Approximately one week before the vehicle was repossessed, I reported the issue to the dealership and requested inspection. However, I was not provided a definitive diagnosis or service record confirming evaluation or remediation. The vehicle was subsequently remotely disabled without proper notice or opportunity to repair, placing me at risk by stranding me in an unsafe location without functional transportation. This vehicle may have also been equipped with over-the-air control features or aftermarket immobilizers unknown to me at the time of financing. To date, I have not been able to inspect the system because the vehicle was taken from my possession under a disputed contract. I believe the problem has not been properly addressed or documented by Mercedes-Benz, and the vehicle is not currently available for inspection as it remains in the control of the finance company. Prior to this incident, no physical warning lamps were persistent, though the vehicle intermittently displayed electronic system errors, especially during startup or inclement weather. This complaint is being submitted due to serious concerns about vehicle safety, electronic control vulnerabilities, and potential manufacturer negligence. I request that NHTSA initiate a review of the E-Class E450A systems involved in driver assistance, electrical integration, and potential remote immobilization tied to finance enforcement.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11658033April 30, 2025
ELECTRICAL SYSTEM
When using Map apps through CarPlay, I’ve noticed two consistent problems: Inaccurate Vehicle Speed: The carplay speedometor does not match the the actual speedometer of the vehicle, which seems always 1.6 times higher than the actual(seems to be the metric confusion from mph to kmh). GPS Drift: The location shown on the map is frequently ahead of my actual position, which causes navigation directions (especially turns and exits) to be slightly mistimed. However, when the speedometer is correct, the GPS drift issue would disappear automatically. So I assume that these two issues are correlated. These issues can be confusing and potentially unsafe while driving. I’ve tested other navigation apps on CarPlay and found they do exhibit the same behavior, so I suspect the issue may be general to Mercedes E300 and probably other vehicles. I did a bit of research and found it to be a common issue of Mercedes E300 2017. Please see attached link for the threads from MB forum. https://mbworld.org/forums/gls-class-x167/843643-wrong-speed-limit-detected.html Thank you for your assistance, and I look forward to your reply. Best regards
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11655661April 20, 2025
UNKNOWN OR OTHER
The sunroof seems like it has gone off the track . I am not sure it's locked in and worried it will fly open and fly off the roof of the car
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11654400April 14, 2025
ENGINE, FUEL/PROPULSION SYSTEM
Smell gasoline on driver side. Can’t fill tank up or the smell is unbearable. Gas consumption is high. Engine light is on , suspension make a lot of noise, and ticking on driver side.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11653552April 8, 2025
FUEL SYSTEM, GASOLINE
The contact owns a 2012 Mercedes-Benz E350. The contact stated while driving 5 MPH, the contact smelled fuel on the interior of the vehicle. No warning lights were illuminated. The contact stated that the dealer was contacted. The vehicle was taken to an independent mechanic where it was diagnosed and determined that the fuel filter sending unit needed to be replaced. The vehicle was being repaired. The contact related the failure to NHTSA Campaign Number: 12V557000 (FUEL SYSTEM, GASOLINE). The manufacturer was notified of the failure and informed the contact that the VIN was not included in the recall. The failure mileage was 124,900.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11652830April 4, 2025
SUSPENSION
This vehicle, with 115,000 miles has been discovered to have had the brackets in the subframe for BOTH rear lateral arms rust through and are broken causing a $5,000 repair estimate. The mechanic who found this (42 years as a mechanic) said he has never seen anything like it. This is a car where I had to replace the transmission at 49,000 miles and the control unit at 62,000 miles (over $13,000 in repairs). I saw through AI search that this problem has been reported many times but has not prompted an investigation. This issue should NEVER happen and is a MAJOR SAFETY threat.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11652710April 4, 2025
ENGINE
does the engine in this car have a correct balance shaft?
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11652348April 2, 2025
STEERING
The contact owns a 2014 Mercedes-Benz E350. The contact stated while driving at an undisclosed speed, the power steering warning light illuminated. The vehicle was taken to the dealer where it was diagnosed that the rack and steering assembly had failed and needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure and referred the contact to the NHTSA Hotline for further assistance. The approximate failure mileage was 85,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11651738March 31, 2025
BACK OVER PREVENTION
The contact owns a 2019 Mercedes-Benz E450. The contact stated that while reversing, the rearview camera failed to display an image of the rear of the vehicle, compromising the back over prevention system. No warning lights were illuminated. The vehicle was taken to the dealer, who diagnosed a failure with the rearview camera display. The vehicle was repaired. After investigating the failure, the contact related the failure to NHTSA Campaign Number: 22V232000 (Back Over Prevention), but the VIN was not included. The manufacturer was notified of the failure, and a case was opened. The failure mileage was 10,300.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11651098March 27, 2025
SERVICE BRAKES
Mercedes had a recall for rusty subframe but the rear break lines are rusting out as well and it should be a recall just like the subframe. I have brake line leaking now and it will cost around 2500-3500 to fix per mercedes
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11651111March 27, 2025
SERVICE BRAKES
Excessive corrosion on rear brake lines. I've never had to replace brake lines on car before. The cost is almost $5,000 out of pocket and I believe this due to low quality products used to manufacture the original brake lines. I believe there should be an investigation into the brake lines as there could be serious injury if they fail.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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