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 7 complaints for MERCEDES

MERCEDES GLC (2023) — SERVICE BRAKES Nov 5, 2025
Incident date: Feb 3, 2024
Purchased vehicle 6-23 from MB West Chester pa. Feb 3-24 I was parked in a lot once I tried to enter the car I was locked out of the vehicle completely 2270 miles on it. I tried to use the key no avail. I had to contact Mercedes to have my car towed to the shop. Once arrived the damage signal came on. I was told taking the car off the tow truck sometimes makes that signal come on. I never underst... Read more
MERCEDES S CLASS (1993) — ELECTRICAL SYSTEM Mar 12, 2014
Incident date: Jan 8, 2013
THE FUEL INJECTION WIRING HARNESS HAS INSULATION THAT IS BADLY CRACKED AND FLAKING OFF CAUSING FAULT CODES AND POOR RUNNING. THE BODY HARNESS HAS CRACKED INSULATION AS WELL. WHILE THIS IS AN OLDER CAR IT IS LOW MILES AND HAS SPENT ITS LIFE STORED INDOORS. I HAVE A 1968 MODEL AMC CAR. THE WIRING IS FINE STILL. THIS WAS A SERIOUS DESIGN FLAW FROM DAY ONE. IT WOULDN'T BE SO BAD IF THE REPLACEM... Read more
MERCEDES GLK350 (2013) — VISIBILITY/WIPER Feb 18, 2014
Incident date: Feb 16, 2014
TL* THE CONTACT OWNS A 2013 MERCEDES BENZ GLK 350. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 65 MPH, THE CONTACT HEARD A LOUD ABNORMAL NOISE AS THE VEHICLE SUN ROOF SHATTERED INTO SMALL PIECES. THE VEHICLE WAS MANEUVERED TO THE SIDE OF THE ROAD FOR THE CONTACT TO OBSERVE THE FAILURE. THE VEHICLE WAS NOT TAKEN TO A DEALER FOR DIAGNOSIS OR REPAIRS. THE MANUFACTURER WAS MADE AWARE OF THE PR... Read more
MERCEDES GLK350 (2013) — POWER TRAIN Jan 23, 2014
Incident date: Jan 20, 2014
I NOTICED SINCE MONDAY THE 20TH OF JANUARY, THE CAR WHILE DRIVING FORWARD WOULD SUDDENLY GO INTO REVERSE MAKING A GRINDING SOUND. THIS HAPPENED TWICE IN TRAFFIC AND, COULD BE DANGEROUS IF IT HAD HAPPENED IN AN INTERSECTION. IN ADDITION TO THIS MALFUNCTION, IT QUITE OFTEN SLIPS INTO NEUTRAL WHEN I SLOWED FOR ANY REASON; LIKE, TO GIVE WAY OR PREPARING TO GO INTO A PARKING SPACE. THESE MALFU... Read more
MERCEDES GLK350 (2013) — ELECTRICAL SYSTEM Jan 23, 2014
Incident date: Jan 20, 2014
I NOTICED SINCE MONDAY THE 20TH OF JANUARY, THE CAR WHILE DRIVING FORWARD WOULD SUDDENLY GO INTO REVERSE MAKING A GRINDING SOUND. THIS HAPPENED TWICE IN TRAFFIC AND, COULD BE DANGEROUS IF IT HAD HAPPENED IN AN INTERSECTION. IN ADDITION TO THIS MALFUNCTION, IT QUITE OFTEN SLIPS INTO NEUTRAL WHEN I SLOWED FOR ANY REASON; LIKE, TO GIVE WAY OR PREPARING TO GO INTO A PARKING SPACE. THESE MALFU... Read more
MERCEDES GLK350 (2013) — ENGINE Jan 23, 2014
Incident date: Jan 20, 2014
I NOTICED SINCE MONDAY THE 20TH OF JANUARY, THE CAR WHILE DRIVING FORWARD WOULD SUDDENLY GO INTO REVERSE MAKING A GRINDING SOUND. THIS HAPPENED TWICE IN TRAFFIC AND, COULD BE DANGEROUS IF IT HAD HAPPENED IN AN INTERSECTION. IN ADDITION TO THIS MALFUNCTION, IT QUITE OFTEN SLIPS INTO NEUTRAL WHEN I SLOWED FOR ANY REASON; LIKE, TO GIVE WAY OR PREPARING TO GO INTO A PARKING SPACE. THESE MALFU... Read more
MERCEDES GLK350 (2013) — VISIBILITY:SUN/MOON ROOF ASSEMBLY Dec 28, 2013
Incident date: Dec 27, 2013
HELLO, I WOULD LIKE TO SHARE A SAFETY CONCERN AND INCIDENT REGARDING THE SUNROOF OF A NEWLY PURCHASED MERCEDES BENZ 2013 GLK 350 4 MATIC. AS I WAS MAKING MY DRIVE BACK TO VA ON I 85 HEADED TOWARDS COMPERS/ GAFFNEY, NC AT APPROXIMATELY 4:23 PM ON 27 DEC 13, I HEARD A VERY LOUD POP AND SHATTERED GLASS SOUND ON MY RIGHT PASSENGER SIDE. I CAREFULLY MOVED OVER TO THE FAR RIGHT LANE TO SLOW DOWN AND CON... Read more