VehicleVerdict

2012 Mercedes-Benz Glk350 problems

Verdict · NHTSA data

One of the years to avoid

The 2012 Mercedes-Benz Glk350 carries two red flags at once: 188 consumer complaints filed with NHTSA and an open NHTSA defect investigation (subject: Desiccated Air Bag Inflator Rupture). It is one of the Glk350 years to avoid.

The trouble concentrates in one system: airbags issues account for 71% of all reports (134 of 188), far ahead of fuel system at 13.

188

NHTSA complaints

4

Recalls

1

Investigations · 1 open

10

Crash-involved

0

Fires reported

5

Injuries

0

Deaths

—

NCAP overall

How does 2012 compare to other Glk350 years?

Glk350 NHTSA complaints by model year, 2012 highlighted280 complaints2006: 4 complaints2007: 5 complaints2008: 3 complaints2010: 280 complaints2011: 149 complaints2012: 188 complaints2013: 164 complaints2014: 116 complaints2015: 135 complaints
Glk350 NHTSA complaints by model year, 2012 highlighted. Red bars are years to avoid.

See all Glk350 years to avoid →

What are the most common 2012 Mercedes-Benz Glk350 problems?

ComponentComplaintsShare
Airbags13471%
Fuel System137%
Other74%
Brakes63%
Electrical System53%
Suspension42%
Seats32%
Steering32%
Tires & Wheels32%
Transmission32%
Body & Structure21%
Engine21%
Seat Belts11%
Speed Control11%
Visibility & Wipers11%

Does the 2012 Mercedes-Benz Glk350 have recalls?

4 NHTSA recall campaigns on file. Recall repairs are free at franchised dealers.

19V010000AirbagsJanuary 9, 2019 · 288,779 units

Defect

Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2014 C250, C300 4Matic, C350, C63 AMG, E350 4Matic Coupe, E350 Cabrio, E350 Coupe, SLS AMG Cabrio, SLS AMG Coupe, 2014-2015 C250 Coupe, C350 4Matic Coupe, C350 Coupe, C63 AMG Coupe, GLK 350, GLK250 BlueTec 4Matic, GLK350 RWD, 2015-2017 E400 4Matic Coupe, E400 Cabrio, E400 Coupe, 2014-2017 E550 Cabrio, and 2014-2016 E550 Coupe vehicles sold, or ever registered, in the states of AL, CA, FL, GA, HI, LA, MS, SC, TX, PR, AS, GU, the MP, and VI or "Zone A." Additionally, MBUSA is recalling certain 2012-2014 C250, E350 4Matic Coupe, SLS AMG Cabrio, 2012-2015 C250 Coupe, C350 4Matic Coupe, C350 Coupe, C63 AMG Coupe, 2011 C300, 2011-2014 C300 4Matic, C350, C63 AMG, E350 Cabrio, E350 Coupe, SLS AMG Coupe, 2015-2016 E400 4Matic Coupe, E400 Cabrio, E400 Coupe, 2011-2016 E550 Cabrio, E550 Coupe, 2011-2015 GLK350 4Matic, GLK350 RWD, and 2013-2015 GLK250 BlueTec 4Matic vehicles ever registered in the states of AZ, AR, DE, DC, IL, IN, KS, KY, MD, MO, NE, NV, NJ, NM, NC, OH, OK, PA, TN, VA, and WV or "Zone B." MBUSA is also recalling certain 2012-2014 C250, E350 4Matic Coupe, SLS AMG Cabrio 2012-2015 C250 Coupe, C350 4Matic Coupe, C350 Coupe, C63 AMG Coupe, 2010-2011 C300, 2010-2014 C300 4Matic, C350, C63 AMG, E350 Coupe, 2011-2014 E350 Cabrio, SLS AMG Coupe, 2015-2016 E400 4Matic Coupe, E400 Cabrio, E400 Coupe, 2016-2017 E550 Cabrio, 2010-2016 E550 Coupe, 2010-2015 GLK350 4Matic, GLK350 RWD, and 2013-2015 GLK250 BlueTec 4Matic vehicles ever registered in the states of AK, CO, CT, ID, IA, ME, MA, MI, MN, MO, NH, NY, ND, OR, RI, SD, UT, VT, WA, WI and WY or "Zone C." These vehicles are equipped with air bag inflators assembled as part of the passenger frontal air bag modules that may explode due to propellant degradation occurring after long-term exposure to high absolute humidity, temperature and temperature cycling.

Consequence

An inflator explosion may result in sharp metal fragments striking the passenger or other occupants resulting in serious injury or death.

Remedy

MBUSA will notify owners, and dealers will replace the passenger frontal air bag module, free of charge. The recall began March 29, 2019. Owners may contact MBUSA customer service at 1-800-367-6372.

17V017000AirbagsJanuary 10, 2017 · 104,119 units

Defect

Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2012 C300 4Matic, C250, C250 Coupe, C350, C350 Coupe 4Matic, C350 Coupe, C63 AMG, C63 AMG Coupe, E350 Coupe 4Matic, E350 Cabrio, E350 Coupe, E550 Cabrio, E550 Coupe, GLK350 4Matic, GLK350, SLS AMG Cabrio, and SLS AMG Coupe vehicles originally sold, or ever registered, in Alabama, California, Florida, Georgia, Hawaii, Louisiana, Mississippi, South Carolina, Texas, Puerto Rico, American Samoa, Guam, the Northern Mariana Islands (Saipan), and the U.S. Virgin Islands, or "Zone A." Additionally, unless included in "Zone A" above MBUSA is recalling certain 2009 C300 4Matic, C300, C350 and C63 AMG vehicles originally sold, or ever registered, in Arizona, Arkansas, Delaware, District of Columbia, Illinois, Indiana, Kansas, Kentucky, Maryland, Missouri, Nebraska, Nevada, New Jersey, New Mexico, North Carolina, Ohio, Oklahoma, Pennsylvania, Tennessee, Virginia, and West Virginia, or "Zone B." Additionally, unless included in "Zone A" or "Zone B" above MBUSA is recalling certain 2008 C300 4Matic, C300, and C350 vehicles originally sold, or ever registered, in Alaska, Colorado, Connecticut, Idaho, Iowa, Maine, Massachusetts, Michigan, Minnesota, Montana, New Hampshire, New York, North Dakota, Oregon, Rhode Island, South Dakota, Utah, Vermont, Washington, Wisconsin, and Wyoming. These vehicles are equipped with certain air bag inflators assembled as part of the passenger frontal air bag modules, and used as original equipment or replacement equipment. In the event of a crash necessitating deployment of the front air bags, these inflators may rupture due to propellant degradation occurring after long-term exposure to absolute humidity and temperature cycling.

Consequence

An inflator rupture may result in metal fragments striking the vehicle occupants resulting in serious injury or death.

Remedy

MBUSA will notify owners, and dealers will replace the front passenger air bag modules, free of charge. Owners were sent an interim notification in March 2017. Second notices started going out in October 2018 and continue to be mailed as parts become available. Owners may contact MBUSA customer service at 1-877-496-3691

16V081000AirbagsFebruary 11, 2016 · 711,159 units

Defect

Mercedes-Benz USA, LLC. (MBUSA) is recalling certain model year 2009-2010 ML320 BlueTec 4Matic, GL320 BlueTec 4Matic and R320 CDI 4Matic, 2011 E350 Cabriolet and E550 Cabriolet, 2009-2011 ML350, ML350 4Matic, ML550 4Matic, ML63 AMG, and C63 AMG, 2010-2011 ML450 4Matic Hybrid, E350 Coupe, E350 4Matic, E550 Coupe, E550 4Matic, and E63 AMG, 2011-2012 GL350 BlueTec 4Matic and R350 BlueTec 4Matic, 2009-2012 GL450 4Matic, GL550 4Matic and R350 4Matic, 2007-2008 SLK280, SLK350, and SLK55 AMG, 2011-2014 SLS AMG Coupe, 2012 SLS AMG Cabriolet, 2013-2014 SLS AMG GT and SLS AMG GT Cabriolet, 2005 C230 Kompressor and C320, 2006-2007 C230, 2006-2011 C350, 2008-2011 C300 and C300 4Matic, 2010-2012 GLK350 and GLK350 4Matic and 2007-2008 Chrysler Crossfire vehicles. Upon deployment of the driver's frontal air bag, excessive internal pressure may cause the inflator to rupture.

Consequence

In the event of a crash necessitating deployment of the driver's frontal air bag, the inflator could rupture with metal fragments striking the driver or other occupants resulting in serious injury or death.

Remedy

MBUSA will their notify owners, and Fiat Chrysler will notify the affected Chrysler owners. Dealers for the respective brands will replace the driver's frontal air bag module, free of charge. This recall began November 2016. Mercedes-Benz owners may contact MBUSA customer service at 1-800-367-6372 and Chrysler owners may contact Fiat Chrysler customer service at 1-800-853-1403.

12V557000Fuel SystemDecember 3, 2012 · 5,800 units

Defect

Mercedes-Benz is recalling certain model year 2011-2012 S400, S550, S550 4Matic, S63 AMG, C300, C300 4Matic, E350, GLK350, GLK350 4Matic, CL550 4Matic, and CL63 AMG vehicles manufactured from April 18, 2011, through July 12, 2011. Due to an irregularity stemming from the molding process of the fuel filter flange, the fuel filter flange may crack when operated in high temperatures.

Consequence

If the fuel filter flange cracks, it will leak fuel which may lead to a fire if an external ignition source is present.

Remedy

Mercedes-Benz will notify owners, and dealers will replace the fuel filter, free of charge. The recall campaign is expected to begin in February 2013. Owners may contact Mercedes-Benz at 1-800-367-6372.

Open NHTSA investigations

EA21002

Desiccated Air Bag Inflator Rupture

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.Consequently, all frontal inflators using propellant 2004 that do not contain a "desiccant" (a substance that traps and holds moisture) in US vehicles are under recall. These "non-desiccated" inflators either have been or are required to be replaced.In some cases, the remedy part for these recalled inflators was, or will be, an inflator using either propellant 2004 or 2004L that does contain a desiccant. None of these "desiccated" remedy parts (which were installed in older model year vehicles) are currently under recall for a degradation concern. Certain subsets of desiccated PSAN inflators using propellant 2004 for use as original equipment, however, have been recalled for a degradation concern. All Takata inflators produced with propellant 2004L contain desiccant, and none of these desiccated inflators using propellant 2004L are under recall for a degradation concern. There have been no reported field ruptures in any non-recalled desiccated PSAN inflators.It is understood that desiccants fully saturate at some threshold, at which point any additional moisture will not be captured. This means the degradation process observed in non-desiccated inflators using propellant 2004 may also occur in non-recalled desiccated inflators using propellant 2004, assuming additional moisture enters the inflator and high temperature cycling occurs. Based on available information, desiccant saturation can occur within the first five years in the worst environments, and the time required for full saturation is affected by multiple factors. While no present safety risk has been identified, further work is needed to evaluate the future risk of non-recalled desiccated inflators using propellant 2004.Three entities -- Takata (now known as TK Global), the Independent Testing Coalition, and Exponent -- have been studying the long-term behavior of Takata desiccated PSAN inflators using propellant 2004L (as well as 2004) in the presence of moisture and temperature cycling. The research efforts, which include development of predictive modeling techniques and field sample analysis, are ongoing. To date, none of the researchers have identified field evidence showing that propellant 2004L is undergoing a degradation process that leads to aggressive deployment and potential rupture. However, the time in service of such inflators remains short compared to that of the inflators using propellant 2004. Further study is needed to assess the long-term safety of desiccated inflators using propellant 2004L.The Office of Defects Investigation is opening this investigation to examine whether a safety defect related to propellant degradation exists in non-recalled desiccated PSAN frontal inflators manufactured by Takata. This investigation will require extensive information on Takata production processes and surveys of inflators in the field. Lists of recall actions that may have used desiccated PSAN inflators as remedy parts, as well as the makes and models originally manufactured with them, is available with the downloadable version of this document (see nhtsa.gov/recalls?nhtsaId=EA21002 -- note this information is subject to change/revision as the investigation proceeds). This investigation does not supersede EA15-001, which remains open.

Consumer complaints filed with NHTSA

Representative excerpts, cleaned of personal information. These are consumer statements, not verified defects.

“TL* THE CONTACT OWNS A 2012 MERCEDES-BENZ GLK350. WHILE DRIVING APPROXIMATELY 50 MPH, ANOTHER VEHICLE CRASHED INTO THE CONTACT'S VEHICLE. THE CONTACT STATED THAT ONLY THE TWO HEADREST AIR BAGS DEPLOY. THE CONTACT SUSTAINED INTERNAL INJURIES TO THE HEAD AND BODY THAT REQUIRED MEDICAL ATTENTION. THE…”

Complaint filed with NHTSA · Airbags · February 7, 2013 · crash

“EVERYTIME I FILL UP THE TANK, IT SMELLS GAS IN THE GARAGE AFTER IT STAYS OVERNIGHT. I DO NOT OVERFILL THE TANK. BUT, THIS STILL PERSISTS. MANY MB OWNERS I HAVE SEEN ON THE MB BLOGS AND INQUIRIES ABOUT THIS HAVE THE SAME ISSUE. THIS IS A POTENTIAL SAFETY HAZARD ISSUE THAT REQUIRES IMMEDIATE SAFTETY…”

Complaint filed with NHTSA · Fuel System · March 10, 2017

“The seats on both the passenger and driver size has split at the seams. They began to appear in 2012. The battery failed and the car would not start. Periodically the car starts up slow. The car bucks in a hard motion when trying to accelerate. The car makes a grinding noise, with a dragging…”

Complaint filed with NHTSA · Other · January 12, 2012

“WHILE PARKING MY CAR IN A GARAGE, IT ACCELERATED. UPON APPLYING THE BRAKES, IT SPEEDED UP CAUSING ME TO CRASH INTO A CONCRETE BARRIER. AIR BAG DID NOT DEPLOY.”

Complaint filed with NHTSA · Brakes · December 16, 2015 · crash

“[XXX] STEERING LOCK FAILURE SHOULD BE A RECALL. MERCEDES CHARGES $1100 TO REPLACE MINE AND EVERYTHING I'VE READ PPL ARE ALL HAVING SAME COMMON ISSUES. I HAD NO ISSUES UNTIL AFTER MY CAR WAS HIT IN FRONT WHEN SOMEONE BACKED INTO ME (VERY HARD THAT IS). SUDDENLY MANY LIGHTS ON DASH CAME ON AND NEXT…”

Complaint filed with NHTSA · Electrical System · February 14, 2020 · crash

2012 Mercedes-Benz Glk350 — common questions

Is the 2012 Mercedes-Benz Glk350 reliable?

NHTSA data argues against it: 188 complaints put the 2012 model at #2 of 9 Glk350 years, and a defect investigation remains open. It is one of the Glk350 years to avoid.

What are the most common 2012 Glk350 problems?

According to NHTSA complaint data, the leading problem areas are airbags (134 complaints), fuel system (13 complaints), other (7 complaints).

Does the 2012 Mercedes-Benz Glk350 have recalls?

Yes — NHTSA lists 4 recall campaigns affecting the 2012 Mercedes-Benz Glk350. Recall repairs are free at franchised dealers; check the VIN at nhtsa.gov/recalls to confirm the work was done.

Is the 2012 Mercedes-Benz Glk350 under NHTSA investigation?

Yes — an investigation remains open (Desiccated Air Bag Inflator Rupture). An open ODI action means NHTSA is actively assessing a possible defect.

Which Mercedes-Benz Glk350 years should you avoid?

Based on complaint rates and open investigations, the Glk350 years to avoid are 2010, 2012, 2013, 2011, 2015, 2014. The cleanest record among Glk350 years belongs to 2008.

Related

Based on NHTSA ODI data through June 2026. Complaints are consumer-reported and unverified. Updated July 5, 2026.

Compiled by Sharon Ben-Moshe, Founder.