Consumer Safety Complaints

Search 2,215,138 safety complaints filed by vehicle owners with NHTSA — including 138,663 crashes, 56,255 fires, and 8,561 deaths.

2,215,138 Total Complaints
138,663 Reported Crashes
56,255 Reported Fires
8,561 Reported Deaths

What is a NHTSA consumer complaint?

A consumer complaint is a free-form report filed by a vehicle owner directly to the National Highway Traffic Safety Administration (NHTSA) describing a safety concern about their vehicle. NHTSA collects these reports through its Vehicle Owner Defect Report (VOQ) system and publishes them publicly. Each complaint includes the affected component, the date and circumstances of the incident, whether the failure caused a crash or fire, and any reported injuries or deaths. The owner's full narrative description is included verbatim — NHTSA does not edit or moderate the descriptions.

The database below contains over 2,215,138 individual complaints. NHTSA's investigators monitor it for clusters of similar reports — when enough owners describe the same failure mode on the same vehicle, NHTSA may open a Preliminary Evaluation that can lead to a recall. Many of the largest recalls in U.S. history, including the Takata airbag recall and the Hyundai/Kia engine fire recalls, started as patterns visible in this complaint database years before they became formal recalls.

How to interpret what you read

A few principles for reading consumer complaints usefully:

  • One complaint is anecdote; a hundred similar complaints is data. NHTSA does not investigate the truthfulness of any individual report — that's the job of the Office of Defects Investigation, which looks at the full pattern. When evaluating a vehicle, look for whether multiple owners describe the same chain of events.
  • Crash, fire, injury, and death flags are owner-set. They are not verified by NHTSA. They are still useful as a filter, because owners who tick those boxes are typically reporting more serious incidents than those who don't.
  • Component categories are NHTSA-assigned, not owner-assigned. NHTSA standardizes the component field so that complaints can be aggregated. The owner narrative often goes into more detail than the component category captures.
  • Complaint volume scales with sales volume. A best-selling model will accumulate more raw complaints than a niche model even at the same defect rate. To compare across vehicles, look at complaints per 100,000 units sold, not raw counts.

If you've experienced a defect

File a complaint. NHTSA's investigators rely on this database to detect emerging defects, and useful complaints — specific, concrete, with dates and mileage and clear descriptions of what happened — feed directly into the agency's pattern detection. The form takes about 10 minutes and is at nhtsa.gov/recalls under "Report a Safety Problem." Your complaint becomes part of the same public record that this page is built from. Owners filing detailed VOQs are how recalls get triggered.

Read more from our blog

How to Read NHTSA Consumer Complaints › How NHTSA Investigations Work › Used Car: 7 Recall Checks to Run First › The Takata Airbag Recall: Full Story › OBD-II Codes Explained › All Articles ›
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Showing 33,200 complaints for MERCEDES-BENZ

MERCEDES-BENZ ML350 (2006) — SERVICE BRAKES Jun 7, 2022
Incident date: Mar 1, 2022
Since my significant others and I purchased this 2006 Mercedes Benz SUV - ML-350, over three months ago, we were wondering why the "Engine check light was always on" so we purchased (4) sensors and replaced the sensors of where OBD tests pointed out for the engine, deleted the Engine Check Light several times but it will go back on after we driven it for another 50 to 100 miles away to normal high... Read more
MERCEDES-BENZ ML350 (2006) — UNKNOWN OR OTHER Jun 7, 2022
Incident date: Mar 1, 2022
Since my significant others and I purchased this 2006 Mercedes Benz SUV - ML-350, over three months ago, we were wondering why the "Engine check light was always on" so we purchased (4) sensors and replaced the sensors of where OBD tests pointed out for the engine, deleted the Engine Check Light several times but it will go back on after we driven it for another 50 to 100 miles away to normal high... Read more
MERCEDES-BENZ GLB 250 (2021) — ENGINE Jun 7, 2022
Incident date: Dec 30, 2021
We purchased a brand new Mercedes GLB in January 2021, I noticed the car started to shake. On our way leaving Zion National Park, the car started shaking really hard and the engine light turned on. The car wouldn't accelerate. We had to pull over on the side of the road. We barely made it to the dealer in St. George, Utah, with the car shaking the entire time. We met with Ryan Poleszak the service... Read more
MERCEDES-BENZ GLK350 (2010) — SERVICE BRAKES Jun 7, 2022
Incident date: Jun 5, 2022
The contact owns a 2010 Mercedes-Benz GLK350. The contact stated while driving approximately 30 MPH, the vehicle in front of her stopped suddenly and the contact depressed the brake pedal and the vehicle jumped. The contact stated that the brake warning light was illuminated. The vehicle was not diagnosed. The vehicle was not repaired. The manufacturer was not notified of the failure. The approxim... Read more
MERCEDES-BENZ SPRINTER 2500 (2014) — ENGINE Jun 7, 2022
Incident date: May 5, 2022
Hanger for Diesel Particulate Filter cracked and cracked the DPF as well. Causing some exhaust to vent to cabin compartment. If one was to believe social media there are THOUSANDS of these and Mercedes chooses to look the other way. All the while charging more than $4,000 to repair. Dealer has confirmed. No engine lights.
MERCEDES-BENZ CLS550 (2014) — SUSPENSION Jun 7, 2022
Incident date: May 21, 2022
Front passenger assembly strut went out suddenly while driving almost caused an accident.No warning signs just gave out. Vehicle is in the shop but cannot be repaired because the part is out of stock and no ETA on when vendor will restock them.
MERCEDES-BENZ S63 (2011) — FUEL SYSTEM, GASOLINE Jun 6, 2022
Incident date: May 6, 2022
The contact owns a 2011 Mercedes-Benz S63. The contact stated that upon refueling the vehicle, he smelled a strong gasoline odor inside and outside the vehicle. The contact stated that the failure reoccurred several times. The dealer was not notified of the failure. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure and informed the contact that the vehicle cou... Read more
MERCEDES-BENZ C300 (2016) — UNKNOWN OR OTHER Jun 6, 2022
Incident date: Jun 3, 2022
After locking car and walking away, engine starts, lights go on, and car doors become unlocked.
MERCEDES-BENZ C300 (2016) — ENGINE Jun 6, 2022
Incident date: Jun 1, 2022
The contact owns a 2016 Mercedes-Benz C300. The contact stated that after turning off the vehicle and locking the doors; after a while, the vehicle would independently unlock the doors and then start up without driver input. The vehicle was taken to the dealer however, the mechanic was unable to determine the cause of the failure. The vehicle was not repaired. The manufacturer was not made aware o... Read more
MERCEDES-BENZ C300 (2016) — ELECTRICAL SYSTEM Jun 6, 2022
Incident date: Jun 1, 2022
The contact owns a 2016 Mercedes-Benz C300. The contact stated that after turning off the vehicle and locking the doors; after a while, the vehicle would independently unlock the doors and then start up without driver input. The vehicle was taken to the dealer however, the mechanic was unable to determine the cause of the failure. The vehicle was not repaired. The manufacturer was not made aware o... Read more
MERCEDES-BENZ C300 (2013) — STRUCTURE:FRAME AND MEMBERS Jun 6, 2022
Incident date: May 5, 2022
The contact owns a 2013 Mercedes-Benz C300. The contact stated while driving at an undisclosed speed, he heard a thumping noise from the rear of the vehicle. The contact pulled over and checked underneath the vehicle and saw that the rear of the vehicle was sitting on the fuel tank. The contact was able to drive home safely. The vehicle was taken to the dealer and diagnosed with a severely rusted ... Read more
MERCEDES-BENZ C300 (2011) — STEERING Jun 6, 2022
Incident date: May 10, 2022
My 2011, 300C has 116,000 miles. Driving the car I notices that when I applied brakes car swayed to the left. Concerned I brought vehicle to MB in Paramus, NJ. Was told that rear sub-frame was rusted and dislodged along with the brake lines, also rusted. Car was serviced every 10k miles as recommended by dealer and just now these issues were identified. I recently also was told that the fuel tank... Read more
MERCEDES-BENZ C300 (2011) — SERVICE BRAKES Jun 6, 2022
Incident date: May 10, 2022
My 2011, 300C has 116,000 miles. Driving the car I notices that when I applied brakes car swayed to the left. Concerned I brought vehicle to MB in Paramus, NJ. Was told that rear sub-frame was rusted and dislodged along with the brake lines, also rusted. Car was serviced every 10k miles as recommended by dealer and just now these issues were identified. I recently also was told that the fuel tank... Read more
MERCEDES-BENZ E430 (2002) — ENGINE Jun 6, 2022
Incident date: Jun 6, 2022
Engine mount bracket broke causing steering problems from cv axel on drivers side
MERCEDES-BENZ E430 (2002) — SUSPENSION Jun 6, 2022
Incident date: Jun 6, 2022
Engine mount bracket broke causing steering problems from cv axel on drivers side
MERCEDES-BENZ ML350 (2006) — ENGINE Jun 6, 2022
Incident date: Jun 6, 2022
Engine has low power and a whine. Also has a Check Engine Light indicating Center Balance Shaft issue. I took it to Merz dealer and they said it’s known issue of soft metal sproket internal to engine that occurs often. Many times at 50k miles but I bought my car at 150k. Was told engine could stop moving forward at any time.
MERCEDES-BENZ CLA 250 (2019) — ELECTRICAL SYSTEM Jun 6, 2022
Incident date: Jun 6, 2022
The contact owns a 2019 Mercedes-Benz CLA250. The contact received notification of NHTSA Campaign Number: 22V365000 (Electrical System, Communication) 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 issu... Read more
MERCEDES-BENZ CLA 250 (2019) — COMMUNICATION Jun 6, 2022
Incident date: Jun 6, 2022
The contact owns a 2019 Mercedes-Benz CLA250. The contact received notification of NHTSA Campaign Number: 22V365000 (Electrical System, Communication) 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 issu... Read more
MERCEDES-BENZ GL450 (2007) — SERVICE BRAKES Jun 6, 2022
Incident date: Apr 9, 2022
Was driving my vehicle on the freeway and pulled off on and exit ramp. Brake pedal went to floor with very little braking had to pump the brake pedal to regain control. Brakes felt soft. Returned home by pumping brakes. No warning lights, Next day bled brakes and replaced brake fluid. Function restored but no cause could be identified for the air in the brake lines. Very disturbing and unsafe. S... Read more
MERCEDES-BENZ C300 (2012) — SUSPENSION Jun 5, 2022
Incident date: Jun 5, 2022
Part number: 207-350-97-02 This is the sub frame part number, during routine maintenance i found a cracked rear sub frame mount. Upon googling, there are hundreds of owners with that same problem. Cars with milage ranging from 40,000-150,0000 with the same issue. Under hard braking the car is unstable. When I called the MB dealer to inquire about the problem they did confirm that the problem is ... Read more
MERCEDES-BENZ B 250E (2017) — ELECTRICAL SYSTEM Jun 5, 2022
Incident date: Feb 1, 2022
Glad to have found this group on Facebook: https://www.facebook.com/groups/bclasselectric?sorting_setting=TOP_POSTS Here's my situation with my B-250e 2017 model with 38,000 miles. Bought from a used car dealership in California. Took it to Mercedes-Benz of South Bay. First, they had it for 2 months and could not diagnose the problem with the error messages. This is when it was still drivable. Th... Read more
MERCEDES-BENZ B 250E (2017) — ENGINE Jun 5, 2022
Incident date: Feb 1, 2022
Glad to have found this group on Facebook: https://www.facebook.com/groups/bclasselectric?sorting_setting=TOP_POSTS Here's my situation with my B-250e 2017 model with 38,000 miles. Bought from a used car dealership in California. Took it to Mercedes-Benz of South Bay. First, they had it for 2 months and could not diagnose the problem with the error messages. This is when it was still drivable. Th... Read more
MERCEDES-BENZ B 250E (2017) — SUSPENSION Jun 5, 2022
Incident date: Feb 1, 2022
Glad to have found this group on Facebook: https://www.facebook.com/groups/bclasselectric?sorting_setting=TOP_POSTS Here's my situation with my B-250e 2017 model with 38,000 miles. Bought from a used car dealership in California. Took it to Mercedes-Benz of South Bay. First, they had it for 2 months and could not diagnose the problem with the error messages. This is when it was still drivable. Th... Read more
MERCEDES-BENZ E350 (2006) — ENGINE Jun 5, 2022
Incident date: Jun 1, 2022
Balance shaft issues possible cause of vehicle stalls and safety concerns.
MERCEDES-BENZ GLA 250 (2021) — TIRES Jun 3, 2022
Incident date: Jun 2, 2022
I have a zero point dmv clean record!! Tires are dysfunctional poorly made235/55 R18 The front tires are ready to blow out and look /feel very unsafe to drive no blow out yet - however last 6 months many people have noticed POOR TRACTION & asked if the car tires need air. No air WAS NEEDED!! Continental offered 40% off for replacement tires. This is unacceptable ! These are not industry safe and... Read more
MERCEDES-BENZ B 250E (2017) — ENGINE Jun 3, 2022
Incident date: Jan 11, 2022
Coolant leaked into drive unit causing total failure. This is a known issue and should be subject to a recall of these cars. As a dealer we’ve had repeated issues with this.
MERCEDES-BENZ C300 (2017) — ENGINE Jun 3, 2022
Incident date: May 24, 2022
misfire cylinder 1 46300 miles on the engine.Mercedes dealer told me I need new engine and they are not providing warranty coverage.
MERCEDES-BENZ C 300 (2019) — BACK OVER PREVENTION Jun 3, 2022
Incident date: Apr 1, 2022
The contact owns a 2019 Mercedes-Benz C300. The contact received notification of NHTSA Campaign Number: 22V232000 (Back Over Prevention) 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... Read more
MERCEDES-BENZ SPRINTER 2500 (2019) — UNKNOWN OR OTHER Jun 3, 2022
Incident date: Jun 2, 2022
Regarding onboard OEM Navigation system (MBUX) - I feel there is a serious safety issue in the factory supplied, vehicle specific GPS Navigation unit. In the Northeast, we have many parkways, low bridges etc. and the built in navigation system will happily route you onto restricted access parkways or right into a low bridge. My stock Sprinter is close to 10ft tall.... When leaving Long Island, NY ... Read more
MERCEDES-BENZ AMG G63 (2021) — LANE DEPARTURE: ASSIST Jun 3, 2022
Incident date: Jun 2, 2022
The lane keeping assistance is WAY to sensitive. Several times at just the slightest move towards the shoulder the car will brake and swerve. Its very alarming and needs to be recalibrated.
MERCEDES-BENZ C300 (2017) — ENGINE Jun 3, 2022
Incident date: Jun 1, 2022
Check engine light came on, took it to the dealership. It is the Crankcase Ventilation Valve that is once again broken. It helps to accurately depict emissions. It is a known problem that hundreds of other drivers are reporting on forums https://www.benzworld.org/threads/2015-c300-crankcase-ventilation-valve-replacement-p052e71.3047538/page-1 https://mbworld.org/forums/c-class-w205/739851-che... Read more
MERCEDES-BENZ GLC300 (2017) — VISIBILITY Jun 2, 2022
Incident date: Jun 1, 2022
The contact owns a 2017 Mercedes-Benz GLC300. The contact stated that while driving at an undisclosed speed, the front roof panel between the windshield and sunroof detached from the vehicle. The vehicle was not taken to the dealer and was not repaired. The contact became aware of NHTSA Campaign Number: 17V715000 (Visibility) however, the VIN was not included. The manufacturer was made aware of th... Read more
MERCEDES-BENZ C300 (2012) — SUSPENSION Jun 2, 2022
Incident date: May 26, 2022
The contact owns a 2012 Mercedes-Benz C300. The contact stated while driving 70 MPH, there was an abnormally loud sound from the rear of the vehicle. The contact lost control of the vehicle. There was no warning light illuminated. The contact was able to continue normal driving once he regained control of the vehicle. The contact scheduled an appointment with an independent mechanic for the vehicl... Read more
MERCEDES-BENZ C300 (2012) — STRUCTURE:FRAME AND MEMBERS Jun 2, 2022
Incident date: May 26, 2022
The contact owns a 2012 Mercedes-Benz C300. The contact stated while driving 70 MPH, there was an abnormally loud sound from the rear of the vehicle. The contact lost control of the vehicle. There was no warning light illuminated. The contact was able to continue normal driving once he regained control of the vehicle. The contact scheduled an appointment with an independent mechanic for the vehicl... Read more
MERCEDES-BENZ SPRINTER 2500 (2020) — SEATS Jun 1, 2022
Incident date: May 27, 2022
The contact owns a 2020 Mercedes-Benz Sprinter 2500. The contact received notification of NHTSA Campaign Number: 22V181000 (Seats) 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 confirm... Read more
MERCEDES-BENZ GLC300 (2017) — ENGINE Jun 1, 2022
Incident date: May 3, 2022
Was driving on the freeway car started to shake. Speed dropped from 73 to 40 I was thankfully able to merge off the freeway. I stoped to see if there was any visible damage. Everything look normal. Was able to make it home. Husband changed spark plugs and coils. Also bought another small part nothing fixed it. Took it to two different auto shops one being Mercedes. They both confirmed it's a bl... Read more
MERCEDES-BENZ ML350 (2007) — ENGINE Jun 1, 2022
Incident date: May 11, 2022
2007 Mercedes-Benz ML350 DEFECTIVE BALANCE SHAFT CAUSING PAUSE & STOP IN TRAFFIC This is a known defect and has been resolved previously in customers favor in class action and private lawsuits against Mercedes Benz USA. Mercedes refuses to take responsibility for a defective and unsafe build THAT PUTS EVERYONE IN THE PATH OF THIS CARS LIFE IN JEOPARDY. PLEASE FOR THE SAFETY OF THE PUBLIC WILL YOU... Read more
MERCEDES-BENZ ML350 (2007) — FUEL/PROPULSION SYSTEM Jun 1, 2022
Incident date: May 11, 2022
2007 Mercedes-Benz ML350 DEFECTIVE BALANCE SHAFT CAUSING PAUSE & STOP IN TRAFFIC This is a known defect and has been resolved previously in customers favor in class action and private lawsuits against Mercedes Benz USA. Mercedes refuses to take responsibility for a defective and unsafe build THAT PUTS EVERYONE IN THE PATH OF THIS CARS LIFE IN JEOPARDY. PLEASE FOR THE SAFETY OF THE PUBLIC WILL YOU... Read more
MERCEDES-BENZ ML350 (2007) — VEHICLE SPEED CONTROL Jun 1, 2022
Incident date: May 11, 2022
2007 Mercedes-Benz ML350 DEFECTIVE BALANCE SHAFT CAUSING PAUSE & STOP IN TRAFFIC This is a known defect and has been resolved previously in customers favor in class action and private lawsuits against Mercedes Benz USA. Mercedes refuses to take responsibility for a defective and unsafe build THAT PUTS EVERYONE IN THE PATH OF THIS CARS LIFE IN JEOPARDY. PLEASE FOR THE SAFETY OF THE PUBLIC WILL YOU... Read more
MERCEDES-BENZ E300 (2017) — STRUCTURE:BODY Jun 1, 2022
Incident date: Jun 1, 2022
The door will not stay open on hills and makes a loud clicking noise
MERCEDES-BENZ ML550 (2008) — SERVICE BRAKES, HYDRAULIC May 31, 2022
Incident date: May 31, 2022
The contact owns a 2008 Mercedes-Benz ML550. The contact received notification of NHTSA Campaign Number: 22V315000 (Service Brakes, Hydraulic) however, the part to do the recall repair was not yet available. An unknown 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. Th... Read more
MERCEDES-BENZ C300 (2013) — STRUCTURE:BODY May 31, 2022
Incident date: May 1, 2022
Subframe cracked while driving vehicle and began to sway in the rear very badly.
MERCEDES-BENZ B-CLASS ELECTRIC (2016) — POWER TRAIN May 31, 2022
Incident date: Apr 19, 2022
On 4/19/22 while driving my Mercedes B250e, I received a 'check coolant level' warning message, followed closely by 'without starting engine again, consult workshop' and then 'stop, switch engine off'. All messages appeared in less than 30 minutes time, and then my engine completely shut off while I was pulling into a parking lot. Prior to this date, there were no warning signs of the issue. The i... Read more
MERCEDES-BENZ B-CLASS ELECTRIC (2016) — ENGINE May 31, 2022
Incident date: Apr 19, 2022
On 4/19/22 while driving my Mercedes B250e, I received a 'check coolant level' warning message, followed closely by 'without starting engine again, consult workshop' and then 'stop, switch engine off'. All messages appeared in less than 30 minutes time, and then my engine completely shut off while I was pulling into a parking lot. Prior to this date, there were no warning signs of the issue. The i... Read more
MERCEDES-BENZ B-CLASS ELECTRIC (2016) — UNKNOWN OR OTHER May 31, 2022
Incident date: Apr 19, 2022
On 4/19/22 while driving my Mercedes B250e, I received a 'check coolant level' warning message, followed closely by 'without starting engine again, consult workshop' and then 'stop, switch engine off'. All messages appeared in less than 30 minutes time, and then my engine completely shut off while I was pulling into a parking lot. Prior to this date, there were no warning signs of the issue. The i... Read more
MERCEDES-BENZ B-CLASS ELECTRIC (2014) — POWER TRAIN May 31, 2022
Incident date: May 19, 2022
Motor suddenly stopped on highway. This was extremely dangerous. Vehicle transported to Mercedes Benz, they have indicated the electric drive motor has failed. This is the second drive motor in this car that has failed in only 48K miles. We have two of these cars, same year and model. The motor has also failed in the other vehicle. There is an entire Facebook group talking about failures of ... Read more
MERCEDES-BENZ B-CLASS ELECTRIC (2014) — UNKNOWN OR OTHER May 31, 2022
Incident date: Mar 7, 2022
Coolant in electric motor . Needs to replace motor . Diagnosed by Mercedes dealer WI Simonson 1626 Wiltshire blvd Santa Monica ca 90403 4105264700 # 525134 March 7,2022 Mileage 63371 Get signal on the garage.
MERCEDES-BENZ B 250E (2015) — POWER TRAIN May 31, 2022
Incident date: Apr 19, 2019
Motor/Drive Unit making "whirring" noise that got progressively worse over time. While under warranty MB dealer stated that everything was fine, now after the warranty has expired a different dealer says it is failing and needs to be replaced. Independent shop says there is a potential design defect with the Tesla motor used in this vehicle (many early model S motors were replaced by tesla.)
MERCEDES-BENZ B 250E (2015) — ENGINE May 31, 2022
Incident date: Apr 19, 2019
Motor/Drive Unit making "whirring" noise that got progressively worse over time. While under warranty MB dealer stated that everything was fine, now after the warranty has expired a different dealer says it is failing and needs to be replaced. Independent shop says there is a potential design defect with the Tesla motor used in this vehicle (many early model S motors were replaced by tesla.)
MERCEDES-BENZ ML350 (2014) — ELECTRICAL SYSTEM May 31, 2022
Incident date: May 1, 2022
The oil fuel line is leaking on the engine this is currently a recall on my year and model suv
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