MERCEDES-BENZ GLK350 · model year

2015 MERCEDES-BENZ GLK350

133 NHTSA complaints, 10 crash reports for this specific cohort.

NHTSA overall rating

Not crash-tested

New Car Assessment Program

The 2015MERCEDES-BENZGLK350 carries 133 consumer safety complaints in NHTSA's Office of Defects Investigation database for this specific model-year cohort. Within that volume, owners reported 10 crashes, 6 fires, 8 injuries, and 3 fatalities. No NCAP 5-star crash-test rating is available for this model year in the federal database.

Component-level analysis is where model-year complaints become actionable: the top complaint category for the 2015 GLK350 is air bags with 84 filings, followed by electrical system (7) and fuel/propulsion system (5). Concentration in one or two component groups is the classic signature of a systemic defect; a flat distribution usually reflects normal aging, warranty complaints, or isolated build-plant variability.

NHTSA currently has 15 investigation files overlapping the 2015 GLK350. Owners comparing this cohort against neighboring years should pair the counters above with the complaint-by-year trend on the parent model page — a spike in a single year often tracks to a platform refresh, a new transmission supplier, or an updated ECU calibration. Use the related-complaint feed below to read raw owner narratives before deciding whether any pattern here affects your specific use case.

133
Complaints
10
Crashes
6
Fires
8
Injuries
3
Deaths

Total Complaints

133 filings

Crashes Reported

10 reports

Source

NHTSA ODI

Federal complaints database

Complaints vs. fleet median (215)

At or below the fleet median complaint volume.

Complaints by Component

ComponentCount
AIR BAGS84
ELECTRICAL SYSTEM7
FUEL/PROPULSION SYSTEM5
VEHICLE SPEED CONTROL5
ELECTRONIC STABILITY CONTROL (ESC)4
STEERING4
POWER TRAIN4
ENGINE3
UNKNOWN OR OTHER3
SERVICE BRAKES3
WHEELS2
STRUCTURE1
STRUCTURE:BODY1
EXTERIOR LIGHTING1
LANE DEPARTURE: BLIND SPOT DETECTION1

Recent Complaints

20260118AIR BAGS

Any time a passenger sits in the passenger seat in the shows on my dashboard “ front right malfunction service required “

20260118SEAT BELTS

Any time a passenger sits in the passenger seat in the shows on my dashboard “ front right malfunction service required “

20241126FUEL/PROPULSION SYSTEM

My truck has been smelling like gas for a while. I replaced the gas cap and still smelled gas when I was driving. Recently I started smelling it inside the car. It was leaking from two places under the car when I would drive it or just have it running. The mechanic took the plastic piece off the bottom and gas started pouring down. He took the back seats out and there was a pool of gas sitting on the fuel pump. He had me start the car and it immediately started spewing from the fuel pump inside the car. I did not know I could report a complaint so I did not take pictures. The car has been sitting since Saturday without being turned on and the gas spot on the ground remains wet. It’s very dangerous and right now I cannot fix it due to finances.

20240808FUEL/PROPULSION SYSTEM

Gasoline smell around the car when parked in the garage. An inspection underneath the car and in the engine, bay failed to locate the leak. A [XXX] search for fuel leak on Mercedes Benz (MB) returned a number of hits for problems with leaks around fuel tank components on the GLK and other MB models. Upon removal of the rear seat and a check under the two fuel tank covers, I found gasoline pooled on a concave area on top of the Fuel Suction Pump Assembly, MB, part 2184700994 (see attached photos). This plastic part has cracks in it that allow fuel to escape. I contacted MB U.S. headquarters support as I thought that they may have been a campaign to replace this component since the 2012 GLK had a recall for fuel flange cracks but the MB customer support team indicated that a campaign did not exist for this issue on the 2015 MB GLK. Since the car is out of warranty, I purchased a replacement part 2184700994 and installed it which fixed the problem. INFORMATION REDACTED PURSUANT T

20240806ELECTRICAL SYSTEM

Key in electronic ignition switch is not recognized, automatic transmission shifts to automatic park before vehicle comes to a stop. When car slows to 5 miles per hour it abruptly slams into park, putting myself in danger of being rear ended in no fault of my own. It happened multiple times before I could get my vehicle to safety. This has been a known issue as documented on website [XXX] in a memo from Mercedes Benz dated 12/22/13 service memo [XXX]. This is two years prior to my model automobile and should have been rectified. This should have been addressed as a recall item as it is a known safety risk. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

20240701SEATS

The leather seat on the drivers side has melted. After trying to research for a recall, I did see that others have had this problem also. It appears that the seat heater causes the leather to melt. The leather has melted and peeled and is flaking.

20230801BACK OVER PREVENTION: WARNINGS

There are two issues with my vehicle, both started recently. The mileage is only around 33000 miles. The two front tire pressure warnings keep coming on, and I have tried multiple times to correct this, doesn't matter if it exactly correct on reading for pump, or above or below, it just keeps saying they need adjusting. It is only the two front ones and they have been doing this for about 2 weeks now. Second issue has been a recall for other mercedes models but not mine, and it could be that there are much fewer of these on the road and had less complaints. It is exactly same issue that other models that have been recalled. My reversing camera has started to either not work at all, or come on and go off, then reset and come back on again, however this is making it impossible to rely on in a reversing situation. It is basically dangerous as I can be halfway into a manoever and it stops working.

20230801WHEELS

There are two issues with my vehicle, both started recently. The mileage is only around 33000 miles. The two front tire pressure warnings keep coming on, and I have tried multiple times to correct this, doesn't matter if it exactly correct on reading for pump, or above or below, it just keeps saying they need adjusting. It is only the two front ones and they have been doing this for about 2 weeks now. Second issue has been a recall for other mercedes models but not mine, and it could be that there are much fewer of these on the road and had less complaints. It is exactly same issue that other models that have been recalled. My reversing camera has started to either not work at all, or come on and go off, then reset and come back on again, however this is making it impossible to rely on in a reversing situation. It is basically dangerous as I can be halfway into a manoever and it stops working.

20230606FUEL SYSTEM, GASOLINE

The contact owns a 2015 Mercedes-Benz GLK350. The contact stated after refueling; while driving 65 MPH, there was an abnormal gasoline odor inside the cabin of the vehicle. The vehicle was not taken to be diagnosed or repaired. The manufacturer was contacted and stated that the VIN was not under recall. The failure mileage was approximately 62,000.

Mileage: 62,000

20230119ELECTRICAL SYSTEM

The lien keeping assistant is stuck in operative mode. So I had a recall on my airbag and got it changed out yesterday and had the dealership check why it was on they told me I need a new steering wheel. Prior to yesterday two months ago. All the lights came on warning light and I lost power to the engine and then it will kick back on. I’m concerned because they put the airbag in the steering wheel and did a diagnostic and told me I need a new steering wheel the steering wheel pretty much run the whole car I have no horn or nothing by saying that I am afraid the airbag won’t deploy if the car loses control due to the steering wheel and electronics Yes, the vehicle has been to the dealership on diagnostic machine made aware of it and then sent me home in it on safely Yes, about three months ago. All warning lights come on and I lose power to the engine. It said something else was in operable. I got Time. Yesterday, pulling up to the dealership to get the recall airbag installed t

20230119LANE DEPARTURE: ASSIST

The lien keeping assistant is stuck in operative mode. So I had a recall on my airbag and got it changed out yesterday and had the dealership check why it was on they told me I need a new steering wheel. Prior to yesterday two months ago. All the lights came on warning light and I lost power to the engine and then it will kick back on. I’m concerned because they put the airbag in the steering wheel and did a diagnostic and told me I need a new steering wheel the steering wheel pretty much run the whole car I have no horn or nothing by saying that I am afraid the airbag won’t deploy if the car loses control due to the steering wheel and electronics Yes, the vehicle has been to the dealership on diagnostic machine made aware of it and then sent me home in it on safely Yes, about three months ago. All warning lights come on and I lose power to the engine. It said something else was in operable. I got Time. Yesterday, pulling up to the dealership to get the recall airbag installed t

20230119STEERING

The lien keeping assistant is stuck in operative mode. So I had a recall on my airbag and got it changed out yesterday and had the dealership check why it was on they told me I need a new steering wheel. Prior to yesterday two months ago. All the lights came on warning light and I lost power to the engine and then it will kick back on. I’m concerned because they put the airbag in the steering wheel and did a diagnostic and told me I need a new steering wheel the steering wheel pretty much run the whole car I have no horn or nothing by saying that I am afraid the airbag won’t deploy if the car loses control due to the steering wheel and electronics Yes, the vehicle has been to the dealership on diagnostic machine made aware of it and then sent me home in it on safely Yes, about three months ago. All warning lights come on and I lose power to the engine. It said something else was in operable. I got Time. Yesterday, pulling up to the dealership to get the recall airbag installed t

20221024POWER TRAIN

The contact owns a 2015 Mercedes-Benz GLK350. The contact stated that while her husband was driving at an undisclosed speed, the brake pedal was depressed, and the vehicle inadvertently shifted into park(P). The vehicle was towed to the dealer; however, the dealer was unable to duplicate the failure. The failure recurred and the vehicle was taken back to the dealer where a technician test-drove the vehicle and experienced the failure; however, the technician was unable to determine the cause of the failure. The vehicle was not repaired and remained at the dealer. The manufacturer was made aware of the failure. The failure mileage was approximately 107,000.

Mileage: 107,000

20220908UNKNOWN OR OTHER

My 2015GLK 350 shifts into an Automatic P (Parking) while driving under 6 miles per hour. When shutting the car off and immediately starting, the transmission automatically performs another Automatic P (and puts the car into Park) when driving under 6 miles an hour. This puts myself and other drivers at risk. The failure first appeared 60 days after purchase of this vehicle (first happened in August 2021). I took the car in to the independent repair shop in Long Island, NY in Nov 2021. I've had the car looked at and by an independent repair shop and they could not immediately identify the issue. No warnings lights or sounds went off before the automatic p (park) happened. The independent dealer did some research and referred me to an alert from 3/2015 *Topic number LI54.25-P-056472 Version 3 *Key in Electronic Ignition switch (EZS) is not recognized, automatic transmission shifts to Park before vehicle comes to a stop! Cause - An assembly issue I am wiling to get the ca

20220523POWER TRAIN

The contact owns a 2015 Mercedes-Benz GLK350. The contact stated that while attempting to reverse, the gear shifter was in reverse position however, the vehicle failed to respond. The contact then shifted into drive but the vehicle failed to respond. There were no warning lights illuminated. The tow truck driver was contacted and shifted the vehicle into neutral and the vehicle was towed to the dealer where it was diagnosed that no issues were found. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 60,900.

Mileage: 60,900

20220205STEERING

The car’s driver’s side front wheel was replaced. Afterwards,The power steering failed.

20211219EXTERIOR LIGHTING

Unknown

20211219LANE DEPARTURE: BLIND SPOT DETECTION

Unknown

20211126CrashFatalAIR BAGS

The contact owns a 2015 Mercedes-Benz GLK350. The contact received a recall notification for NHTSA Campaign Number: 2020100005 (replace Takata passenger-side module Air Bags) however, the dealer informed the contact that the part for the recall repair was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair? The manufacturer was notified of the issue but did not provide any assistance. The vehicle was in an act of nature accident with a deer. The severe frontal impact damage didn't deploy the airbags. this is a major safety concern with the sensor electrical system, and the already RECALL airbags. The customer is receiving no resolve according to the NHTSA department approve lawsuit settlement claim filed.

20211126CrashFatalSTRUCTURE:BODY

The contact owns a 2015 Mercedes-Benz GLK350. The contact received a recall notification for NHTSA Campaign Number: 2020100005 (replace Takata passenger-side module Air Bags) however, the dealer informed the contact that the part for the recall repair was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair? The manufacturer was notified of the issue but did not provide any assistance. The vehicle was in an act of nature accident with a deer. The severe frontal impact damage didn't deploy the airbags. this is a major safety concern with the sensor electrical system, and the already RECALL airbags. The customer is receiving no resolve according to the NHTSA department approve lawsuit settlement claim filed.

Compare 2015MERCEDES-BENZGLK350 to Similar Vehicles

NHTSA Investigations

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Frequently Asked Questions

How many complaints does the 2015 MERCEDES-BENZ GLK350 have?
The 2015 MERCEDES-BENZ GLK350 has 133 NHTSA complaints, 10 crashes, 6 fires, 8 injuries, and 3 deaths reported.
What are the most common problems with the 2015 MERCEDES-BENZ GLK350?
The most-complained component for the 2015 MERCEDES-BENZ GLK350 is AIR BAGS with 84 complaints. Other frequently reported areas include ELECTRICAL SYSTEM and FUEL/PROPULSION SYSTEM.
Is the 2015 MERCEDES-BENZ GLK350 safe to buy?
Review the complaint history, crash and fire reports, safety ratings, and recall status on this page to make an informed decision. No NHTSA crash test rating is available for this model year. Compare with other model years using the links above.
Where does this data come from?
All complaint, recall, and safety rating data is sourced from the National Highway Traffic Safety Administration (NHTSA). Complaints are filed by vehicle owners through NHTSA's Office of Defects Investigation.

Vehicle Safety Guides

Data as of 2025. Sources: NHTSA Office of Defects Investigation (ODI) complaints database, NHTSA recall campaign API, NHTSA NCAP crash-test ratings, and NHTSA FARS for fatality cross-reference.