Owners have filed 280 complaints
about the 2010 Mercedes Benz GLK350 with NHTSA between 2009 and 2026.
The largest single group is the airbags.
Across this model's run it ranks 2 of 6 worst.
The letter says how bad. This says what kind — whether this year drew
an unusual number of complaints, unusually dangerous
ones, or failures that arrived unusually early.
The dashed ring is 50 — the national norm. Further out is worse.
Complaint volume — 81
Against the median year of the Mercedes Benz GLK350. 50 means typical for this
model; 100 means roughly double.
Severity — 63
12.1% of these complaints
involved a crash, fire, injury or death, against a national rate of
9.7%.
Early failure — 45
26% of failures with a mileage on record happened under
36,000 miles, against a national rate of
29%.
How 2010 compares with every other Mercedes Benz GLK350
Odometer readings owners gave when they filed. About half of all
complaints include one.
Under 1,000 miles
11.1%
1,000 – 9,999 miles
78.0%
10,000 – 24,999 miles
1011.4%
25,000 – 49,999 miles
1011.4%
50,000 – 74,999 miles
1921.6%
75,000 – 99,999 miles
2225.0%
100,000 – 149,999 miles
1517.0%
150,000+ miles
44.5%
When owners complained
A spike years after the car went on sale usually means a part wearing
out on schedule across the whole fleet — the kind of pattern no single
owner can see from inside their own car.
Oct 2009peak 25May 2026
NHTSA investigations into the 2010 Mercedes Benz GLK350
An investigation is the step before a recall: the agency has seen enough
complaints to look into a pattern itself. An open one means it thinks
something may be wrong and nothing has been fixed yet.
From 2000 through 2017, Takata produced millions of air bag inflators using two types of phase-stabilized ammonium nitrate ("PSAN") propellant -- propellant 2004 and propellant 2004L. After prolonged exposure to high temperature cycles and humidity, inflators using propellant 2004 can degrade, causing the propellant to burn too quickly when ignited. The rapid burning can cause the inflator to rupture during deployment, potentially causing serious or even fatal injury to vehicle occupants. See 2016 Blomquist Report at www.nhtsa.gov/sites/nhtsa.gov/files/documents/expert_report-hrblomquist.pdf.C...
Complaints that involved harm
Reports where the owner recorded a crash, a fire, an injury or a death.
Columbia, PAFire
WHEELS
On [XXX], my mother was driving our 2010 Mercedes-Benz GLK 350 to work around 6:30 AM when the vehicle suddenly caught on fire without warning. The car was completely destroyed in the fire. Thankfully, she was able to exit safely. After doing research online, we found many reports of 2010 GLK 350 models catching fire due to fuel system issues and leaks, which appear to be common with this year and model. We were surprised to learn that our VIN currently shows no active recalls, even though the issue seems widespread. We can provide photos of the car before and after the fire, towing documentation, and the police/fire report. The cleanup and towing bills have been expensive, and we are filing this report so NHTSA can investigate whether this is a safety defect that should result in an official recall. Vehicle: 2010 Mercedes-Benz GLK 350 Incident Date: [XXX] Location: Mountville, PA VIN: [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
NHTSA complaint #11692599 — an unverified report by a vehicle owner.
Columbia, PAFire
STEERING
On [XXX], my mother was driving our 2010 Mercedes-Benz GLK 350 to work around 6:30 AM when the vehicle suddenly caught on fire without warning. The car was completely destroyed in the fire. Thankfully, she was able to exit safely. After doing research online, we found many reports of 2010 GLK 350 models catching fire due to fuel system issues and leaks, which appear to be common with this year and model. We were surprised to learn that our VIN currently shows no active recalls, even though the issue seems widespread. We can provide photos of the car before and after the fire, towing documentation, and the police/fire report. The cleanup and towing bills have been expensive, and we are filing this report so NHTSA can investigate whether this is a safety defect that should result in an official recall. Vehicle: 2010 Mercedes-Benz GLK 350 Incident Date: [XXX] Location: Mountville, PA VIN: [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
NHTSA complaint #11692599 — an unverified report by a vehicle owner.
Columbia, PAFire
VISIBILITY/WIPER
On [XXX], my mother was driving our 2010 Mercedes-Benz GLK 350 to work around 6:30 AM when the vehicle suddenly caught on fire without warning. The car was completely destroyed in the fire. Thankfully, she was able to exit safely. After doing research online, we found many reports of 2010 GLK 350 models catching fire due to fuel system issues and leaks, which appear to be common with this year and model. We were surprised to learn that our VIN currently shows no active recalls, even though the issue seems widespread. We can provide photos of the car before and after the fire, towing documentation, and the police/fire report. The cleanup and towing bills have been expensive, and we are filing this report so NHTSA can investigate whether this is a safety defect that should result in an official recall. Vehicle: 2010 Mercedes-Benz GLK 350 Incident Date: [XXX] Location: Mountville, PA VIN: [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
NHTSA complaint #11692599 — an unverified report by a vehicle owner.
Centreville, VACrash1 injured
AIR BAGS
Car fail to deploy side air bags at rearend collision and roll over crash .
NHTSA complaint #11465818 — an unverified report by a vehicle owner.
at 78,309 milesBronx, NYCrash
VEHICLE SPEED CONTROL
ACCELERATION/BRAKE ISSUE. ON 09/0517 I PULLED INTO MY PARKING LOT APARTMENT COMPLEX AND UPON PULLING INTO MY PARKING SPOT, I ATTEMPTED TO BACK MY 2010 MERCEDES 2010 GLK350 TO ALIGN MY CAR. I PUT THE VEHICLE IN REVERSE, BUT SUDDENLY THE VEHICLE ACCELERATED BACKWARDS AND CRASHED INTO A PARKED VEHICLE. I ATTEMPTED TO APPLY THE BRAKES, BUT THE VEHICLE DID NOT STOP. BEFORE THE ACCIDENT OCCURRED ON MY DASHBOARD IT DISPLAYED "CHECK BRAKE PADS". I PURCHASE THIS CAR ON 08/16/17 AND WAS INFORMED THAT THE VEHICLE HAS (2) SAFETY RECALLS FOR 'TAKATA" AIRBAGS. THIS UNINTENDED ACCELERATION IN MY 2010 MERCEDES-BENZ GLK350 IS ALARMING AND CONCERNING.
NHTSA complaint #11022316 — an unverified report by a vehicle owner.
at 78,309 milesBronx, NYCrash
STRUCTURE:BODY
ACCELERATION/BRAKE ISSUE. ON 09/0517 I PULLED INTO MY PARKING LOT APARTMENT COMPLEX AND UPON PULLING INTO MY PARKING SPOT, I ATTEMPTED TO BACK MY 2010 MERCEDES 2010 GLK350 TO ALIGN MY CAR. I PUT THE VEHICLE IN REVERSE, BUT SUDDENLY THE VEHICLE ACCELERATED BACKWARDS AND CRASHED INTO A PARKED VEHICLE. I ATTEMPTED TO APPLY THE BRAKES, BUT THE VEHICLE DID NOT STOP. BEFORE THE ACCIDENT OCCURRED ON MY DASHBOARD IT DISPLAYED "CHECK BRAKE PADS". I PURCHASE THIS CAR ON 08/16/17 AND WAS INFORMED THAT THE VEHICLE HAS (2) SAFETY RECALLS FOR 'TAKATA" AIRBAGS. THIS UNINTENDED ACCELERATION IN MY 2010 MERCEDES-BENZ GLK350 IS ALARMING AND CONCERNING.
NHTSA complaint #11022316 — an unverified report by a vehicle owner.
The most recent complaints
In the owners' own words, exactly as filed with NHTSA.
Chicago, IL
UNKNOWN OR OTHER
The vehicle involved is a Mercedes-Benz vehicle that experienced severe corrosion and deterioration of the rear subframe component. The subframe is available for inspection upon request and has been identified as unsafe due to excessive rust and structural corrosion. The corrosion created a major safety risk because the subframe supports critical suspension and stability components. The condition could have caused loss of vehicle control, suspension failure, or an accident while driving, placing both myself and other drivers at risk. The problem has been confirmed by a dealership and/or independent repair facility. I was informed that Mercedes-Benz has acknowledged similar rear subframe corrosion issues and that this condition may fall under a manufacturer warranty or extended coverage program. The vehicle and damaged component have been inspected by service technicians, and repair estimates/documentation are available. The corrosion appears excessive for the age and normal use of the vehicle. Prior to discovering the failure, there were symptoms including unusual noises from the rear suspension area, instability while driving, and visible rust underneath the vehicle. The issue became more noticeable over time before the inspection confirmed severe subframe corrosion.
NHTSA complaint #11740280 — an unverified report by a vehicle owner.
Columbia, PAFire
WHEELS
On [XXX], my mother was driving our 2010 Mercedes-Benz GLK 350 to work around 6:30 AM when the vehicle suddenly caught on fire without warning. The car was completely destroyed in the fire. Thankfully, she was able to exit safely. After doing research online, we found many reports of 2010 GLK 350 models catching fire due to fuel system issues and leaks, which appear to be common with this year and model. We were surprised to learn that our VIN currently shows no active recalls, even though the issue seems widespread. We can provide photos of the car before and after the fire, towing documentation, and the police/fire report. The cleanup and towing bills have been expensive, and we are filing this report so NHTSA can investigate whether this is a safety defect that should result in an official recall. Vehicle: 2010 Mercedes-Benz GLK 350 Incident Date: [XXX] Location: Mountville, PA VIN: [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
NHTSA complaint #11692599 — an unverified report by a vehicle owner.
Columbia, PAFire
STEERING
On [XXX], my mother was driving our 2010 Mercedes-Benz GLK 350 to work around 6:30 AM when the vehicle suddenly caught on fire without warning. The car was completely destroyed in the fire. Thankfully, she was able to exit safely. After doing research online, we found many reports of 2010 GLK 350 models catching fire due to fuel system issues and leaks, which appear to be common with this year and model. We were surprised to learn that our VIN currently shows no active recalls, even though the issue seems widespread. We can provide photos of the car before and after the fire, towing documentation, and the police/fire report. The cleanup and towing bills have been expensive, and we are filing this report so NHTSA can investigate whether this is a safety defect that should result in an official recall. Vehicle: 2010 Mercedes-Benz GLK 350 Incident Date: [XXX] Location: Mountville, PA VIN: [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
NHTSA complaint #11692599 — an unverified report by a vehicle owner.
Columbia, PAFire
VISIBILITY/WIPER
On [XXX], my mother was driving our 2010 Mercedes-Benz GLK 350 to work around 6:30 AM when the vehicle suddenly caught on fire without warning. The car was completely destroyed in the fire. Thankfully, she was able to exit safely. After doing research online, we found many reports of 2010 GLK 350 models catching fire due to fuel system issues and leaks, which appear to be common with this year and model. We were surprised to learn that our VIN currently shows no active recalls, even though the issue seems widespread. We can provide photos of the car before and after the fire, towing documentation, and the police/fire report. The cleanup and towing bills have been expensive, and we are filing this report so NHTSA can investigate whether this is a safety defect that should result in an official recall. Vehicle: 2010 Mercedes-Benz GLK 350 Incident Date: [XXX] Location: Mountville, PA VIN: [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
NHTSA complaint #11692599 — an unverified report by a vehicle owner.
Oceanside, CA
FUEL/PROPULSION SYSTEM
Extremely Urgent Safety Warning! Similar to the the passenger fuel filter extended warranty on the passenger side, the driver's side plastic fuel filter pump is obviously visably defective and forming a large crack, thereby leaking a significant amount gasoline into the back seat, with much also draining out the bottom of the vehicle. Additionally, the metal studs securing the filter are painted, making removal of the filter difficult without breaking the studs. No warning lamps or messages.
NHTSA complaint #11616548 — an unverified report by a vehicle owner.
at 77,000 milesMiami, FL
AIR BAGS
The contact owns a 2010 Mercedes-Benz GLK350. The contact stated while driving 60 MPH, the airbags warning light illuminated and remained illuminated. The contact stated that the VIN was not included in NHTSA Campaign Number: 19V010000 (Air Bags). The local dealer was contacted but provided no assistance. The vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 77,000.
NHTSA complaint #11561371 — an unverified report by a vehicle owner.
Youngstown, OH
SUSPENSION
I just had my vehicle in the shop for starting problem and oil leak. The former mercedes mechanic told me about my subframe having holes in it and the rear wheel moving forward and back during braking. I'm taking it to the dealership for replacement, but I'm upset knowing that I just took a 1400 mile trip with this problem on my vehicle with family in the vehicle and it could have been catastrophic for us all. I've received no notice of the 20 year extended warranty on this vehicle, but a notice of the Takata airbag issue was received recently by me. Not notifying me is irresponsible. I hope everyone gets this repaired before a life is lost.
NHTSA complaint #11555455 — an unverified report by a vehicle owner.
Framingham, MA
SUSPENSION
Corrosión en toda la parte trasera (subframe) que sujeta la suspensión haciendo el carro inestable a la hora de detener el automóvil, y apaga los sistemas ABS,ESP. lo cual lo hace mas peligrosa la conducción. Si Toyota hizo el cambio en sus vehículos con por que mercedes benz deberia comprometerse a repara esta parte. Ya que es un riesgo a la seguridad.
NHTSA complaint #11554522 — an unverified report by a vehicle owner.
Framingham, MA
STRUCTURE:BODY
Corrosión en toda la parte trasera (subframe) que sujeta la suspensión haciendo el carro inestable a la hora de detener el automóvil, y apaga los sistemas ABS,ESP. lo cual lo hace mas peligrosa la conducción. Si Toyota hizo el cambio en sus vehículos con por que mercedes benz deberia comprometerse a repara esta parte. Ya que es un riesgo a la seguridad.
NHTSA complaint #11554522 — an unverified report by a vehicle owner.
Framingham, MA
SUSPENSION
corrosion on entire frame crossmember part
NHTSA complaint #11554064 — an unverified report by a vehicle owner.
Athol, MA
UNKNOWN OR OTHER
Subframe is completely rotted. Taken to several mechanics who were unable to diagnose handling problems and severe tire wear. After research this is a common problem, we were never notified this could be an extremely dangerous and hidden issue. Car is unsafe to operate without expensive repairs. Unacceptable.
NHTSA complaint #11541939 — an unverified report by a vehicle owner.
Athol, MA
SUSPENSION
Subframe is completely rotted. Taken to several mechanics who were unable to diagnose handling problems and severe tire wear. After research this is a common problem, we were never notified this could be an extremely dangerous and hidden issue. Car is unsafe to operate without expensive repairs. Unacceptable.
NHTSA complaint #11541939 — an unverified report by a vehicle owner.
at 125,000 milesRandolph, MA
SUSPENSION
While driving I was unable to come to a complete stop….while breaking the vehicle would pull to the side and keep moving into traffic 😞
NHTSA complaint #11521679 — an unverified report by a vehicle owner.
at 125,000 milesRandolph, MA
FORWARD COLLISION AVOIDANCE: WARNINGS
While driving I was unable to come to a complete stop….while breaking the vehicle would pull to the side and keep moving into traffic 😞
NHTSA complaint #11521679 — an unverified report by a vehicle owner.
Manchester, CT
SUSPENSION
RUSTED REAR SUBFRAME
NHTSA complaint #11520159 — an unverified report by a vehicle owner.
Elkridge, MD
TIRES
The tires were purchased from NTB in August 2022. I noticed a bubble on the side of the tire 3 April. We contact NTB in Columbia,MD because we purchased them from the location and they were also put on at the location. They stated, we can purchase a new tire but there was nothing they could do. We purchased the tire from Walmart.com and took it into the Walmart Tire and Lube. The technician Kevin replaced the olde tire with the new and asked why didn’t we get a free replacement tire from wherever it was purchased from since it was a new tire and defective. We asked him to show us a defect and he showed a small slit inside the tire which caused the tire bubble. He then brought it back to us and placed it in our trunk to give back to NTB. NTB declined to replace the tire stating it was a Pirelli issue and we needed to contact them.
NHTSA complaint #11518340 — an unverified report by a vehicle owner.
Rockville, MD
UNKNOWN OR OTHER
Subframe of the car rusted and rotted from inside out. to the point of rear suspension completely detached from subframe. it caused my car to fish tail and lose control under even slow breaking conditions. once we discovered the problem we were told the car was a death trap and was absolutely unsafe to operate. we found out this is a common problem for this MB model type. the problem was already under recall in Europe. there are thousands of existing owner complains about the exact same issue. MB USA initially refused to acknowledge the problem, but on 2/14/2023 they sent a memo to all US dealers to repair rotted subframe for free under "extended warrantee". however, they refused to pay for the full repair even after dealership specifically informed them that it was not possible to complete the repair without replacing thrust arm and rod, which were damaged due to the Subframe failure. this incident endangered me and my family, cost $2000+ out of pocket for repairs in addition to the loss of access to my vehicle for at least 3 weeks.
NHTSA complaint #11507640 — an unverified report by a vehicle owner.
Rockville, MD
SUSPENSION
Subframe of the car rusted and rotted from inside out. to the point of rear suspension completely detached from subframe. it caused my car to fish tail and lose control under even slow breaking conditions. once we discovered the problem we were told the car was a death trap and was absolutely unsafe to operate. we found out this is a common problem for this MB model type. the problem was already under recall in Europe. there are thousands of existing owner complains about the exact same issue. MB USA initially refused to acknowledge the problem, but on 2/14/2023 they sent a memo to all US dealers to repair rotted subframe for free under "extended warrantee". however, they refused to pay for the full repair even after dealership specifically informed them that it was not possible to complete the repair without replacing thrust arm and rod, which were damaged due to the Subframe failure. this incident endangered me and my family, cost $2000+ out of pocket for repairs in addition to the loss of access to my vehicle for at least 3 weeks.
NHTSA complaint #11507640 — an unverified report by a vehicle owner.
Rockville, MD
STRUCTURE:BODY
Subframe of the car rusted and rotted from inside out. to the point of rear suspension completely detached from subframe. it caused my car to fish tail and lose control under even slow breaking conditions. once we discovered the problem we were told the car was a death trap and was absolutely unsafe to operate. we found out this is a common problem for this MB model type. the problem was already under recall in Europe. there are thousands of existing owner complains about the exact same issue. MB USA initially refused to acknowledge the problem, but on 2/14/2023 they sent a memo to all US dealers to repair rotted subframe for free under "extended warrantee". however, they refused to pay for the full repair even after dealership specifically informed them that it was not possible to complete the repair without replacing thrust arm and rod, which were damaged due to the Subframe failure. this incident endangered me and my family, cost $2000+ out of pocket for repairs in addition to the loss of access to my vehicle for at least 3 weeks.
NHTSA complaint #11507640 — an unverified report by a vehicle owner.
West Acton, MA
SUSPENSION
After breaking hard the vehicle started to pull left and the rear felt like it had locked up. I took it immediately to my local mechanic who diagnosed a prematurely rotted out subframe. I am in the process of having MB review and quote for the repair.
NHTSA complaint #11506087 — an unverified report by a vehicle owner.
West Acton, MA
SERVICE BRAKES
After breaking hard the vehicle started to pull left and the rear felt like it had locked up. I took it immediately to my local mechanic who diagnosed a prematurely rotted out subframe. I am in the process of having MB review and quote for the repair.
NHTSA complaint #11506087 — an unverified report by a vehicle owner.
Dublin, OH
STRUCTURE:BODY
I had my 2010 Mercedes GLK in for B service today (Jan. 3, 2023), and the repair team inspected the vehicle and informed me that I have a RUST HOLE approximately 1" x 2" in size located adjacent to an attachment point for the wheels in the REAR SUBFRAME. If it breaks, it could cause the vehicle to become difficult to control. Additionally, they informed me that the BRAKE LINES are also RUSTING/WEAKENING. If the brakes fail while driving it could cause loss of control of the vehicle. Since these are hidden parts that I typically can't see, I had no warning that there was anything wrong until I had it in for routine maintenance. I have the invoice for the oil change, with a notation from the repair team regarding these parts. The vehicle is available for inspection should it be necessary.
NHTSA complaint #11499957 — an unverified report by a vehicle owner.
Dublin, OH
SERVICE BRAKES
I had my 2010 Mercedes GLK in for B service today (Jan. 3, 2023), and the repair team inspected the vehicle and informed me that I have a RUST HOLE approximately 1" x 2" in size located adjacent to an attachment point for the wheels in the REAR SUBFRAME. If it breaks, it could cause the vehicle to become difficult to control. Additionally, they informed me that the BRAKE LINES are also RUSTING/WEAKENING. If the brakes fail while driving it could cause loss of control of the vehicle. Since these are hidden parts that I typically can't see, I had no warning that there was anything wrong until I had it in for routine maintenance. I have the invoice for the oil change, with a notation from the repair team regarding these parts. The vehicle is available for inspection should it be necessary.
NHTSA complaint #11499957 — an unverified report by a vehicle owner.
Dickinson, TX
FUEL/PROPULSION SYSTEM
Gas leak when filling tank with fuel. Last year I had fuel pump replacement Smells like gas in my garage and I noticed leak This is not good
NHTSA complaint #11499861 — an unverified report by a vehicle owner.
Erie, PA
STRUCTURE:BODY
Premature rear subframe corrosion due to design of component, vehicle is available for inspection upon request. If control arm detaches geometry of suspension will change and divert into another lane and cause a crash, the issue was confirmed by an independent service center. The vehicle is due to be inspected by the manufacturer 12-30. No warning of issue as the majority is covered by body panel.
NHTSA complaint #11499110 — an unverified report by a vehicle owner.