YearToAvoid

2015 Mercedes-Benz Glk350 Reliability Data: Problems & Recalls

Avoid The 2015 Mercedes-Benz Glk350 has a complaint index of 75, ranking 3rd-worst of 9 model years, with an Avoid verdict. Airbags account for 74% of its 114 complaints, and it carries 4 recalls, mostly for airbags and steering.

Based on NHTSA complaints per model-year, not a reliability rating. Methodology

YearToAvoid Scorecard

Complaint Index
75/100
#3 of 9 Glk350 years
Verdict
Avoid
vs. other years of this model
Complaints
114
unique NHTSA reports
Recalls
4
distinct NHTSA campaigns
Crashes
4
reported in complaints
Fires
2
Injuries
4
Top issue
Airbags
Best nearby year
2014
rated Good
NHTSA overall rating
Not rated
EPA combined MPG
21
18.5 city / 25 hwy
Injuries / deaths
4 / 1

Top 2015 Mercedes-Benz Glk350 problems

Share of this year’s NHTSA complaints by component group. Groups with 15+ complaints have their own page.

  1. Airbags84 (74%)
  2. Electrical System8 (7%)
  3. Engine7 (6%)
  4. Brakes6 (5%)
  5. Fuel System6 (5%)
  6. Steering5 (4%)
  7. Transmission & Powertrain5 (4%)
  8. Other3 (3%)
  9. Structure & Body3 (3%)
  10. Lane Departure2 (2%)

A complaint can list more than one component, so shares add up to more than 100%. Shares are % of complaints.

What owners report

  • Owners describe sudden loss of power and acceleration on the highway accompanied by an 'inoperative, see owner's manual' dashboard warning.
  • Some report the engine shutting off unexpectedly while driving, including once while using cruise control on a highway.
  • Several complaints describe an 'ESP inoperative' warning paired with a sudden and unexpected loss of acceleration, sometimes on inclines.
  • Airbag-related complaints include Takata passenger-side module recall parts being unavailable for extended periods, delaying repairs.
  • One owner reported a side curtain airbag deploying with excessive force, causing hearing loss and tinnitus, while the steering wheel airbag failed to deploy.
  • A crash was described where steering and engine malfunctioned together, leading to loss of control and a vehicle fire.
2015 Mercedes-Benz Glk350 complaints: complaints filed per month10Jan 2015Jan 2018May 2019Nov 2019Jul 2020Apr 2021May 2022Jul 2024
114 complaints filed with NHTSA from Jan 2015 to Apr 2026; peak Feb 2019 (10).

2015 Mercedes-Benz Glk350 recalls

4 NHTSA recall campaigns list this model year.

  1. NHTSA 19V787000Nov 1, 2019Other24,226 vehiclesOver-the-air fix

    Communication

    Mercedes-Benz USA, LLC. (MBUSA) is recalling certain 2013-2017 vehicles due to a software fault that may cause the date and time for the emergency call system (eCall) to differ from the actual date and time, potentially relaying an inaccurate vehicle location. For a full list of the affected models visit: https://static.nhtsa.gov/odi/rcl/2019/RMISC-19V787-4620.pdf

    Risk: An inaccurate vehicle location may delay emergency responders, increasing the risk of injury.

    Remedy: MBUSA has initiated an Over the Air (OTA) remote update. MBUSA will also notify owners, and dealers will check software for a successful OTA or update the communication module software as needed, free of charge. The recall began December 23, 2019. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2019120008.

  2. NHTSA 19V010000Jan 9, 2019Airbags288,779 vehicles

    Air bags:frontal:passenger side:inflator module

    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.

    Risk: 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.

  3. NHTSA 17V627000Oct 6, 2017Airbags495,290 vehicles

    Air bags:frontal

    Mercedes-Benz USA, LLC. (MBUSA) is recalling these vehicles: 2014-2018 CLA250, CLA250 4Matic, CLA45 AMG 4Matic, 2015-2018 GLA250, GLA250 4Matic, GLA45 AMG 4Matic, C300 4Matic, C63S AMG, 2012-2014 C250, C350, C300 4Matic, E550 4Matic, 2013-2014 C63 AMG, 2012-2015 C250 Coupe, C350 Coupe, C63 AMG Coupe, 2013-2015 C350 4Matic Coupe, GLK250 4Matic BlueTec, GLK350, GLK350 4Matic, 2016-2017 C350e, C43 AMG, 2015 C400 4Matic, 2016-2018 C63 AMG, GLC300, GLC300 4Matic, 2017-2018 C300 Coupe, C300 4Matic Coupe, C43 AMG, C63 AMG Coupe, C63S AMG Coupe, C300 Cabriolet, C300 4Matic Cabriolet, C43 AMG Cabriolet, C63 AMG Cabriolet, C63S AMG Cabriolet, GLC300 4Matic Coupe, GLC43 AMG, GLC43 AMG Coupe, 2014 E350 Coupe, E350 4Matic Coupe, E350 Cabriolet, E400 Hybrid, 2015-2017 E400 Coupe, E400 4Matic Coupe, E400 Cabriolet, 2014-2017 E550 Coupe, E550 Cabriolet, B250e, 2014-2016 E250 BlueTec, E63 AMG 4Matic Wagon, 2012-2013 E350 BlueTec, 2012-2016 E350, E350 4Matic, 2015-2016 E400, E400 4Matic, 2012 E63 AMG, 2014-2015 E250 4Matic BlueTec, 2013-2016 E350 Wagon, 2017 GLC300d 4Matic, and 2018 GLC350e 4Matic. The driver's air bag may unexpectedly deploy due to insufficient grounding of the steering components if an electrostatic discharge occurs and the air bag clockspring is broken.

    Risk: If the driver air bag inadvertently deploys, it can increase the risk of injury and a crash.

    Remedy: MBUSA will notify owners, and dealers will add sufficient grounding to the steering components, free of charge. The recall began in December 6, 2017. Owners may contact MBUSA customer service at 1-877-496-3691.

See all 4 recalls for the 2015 Mercedes-Benz Glk350 →

2015 Mercedes-Benz Glk350 fuel economy and fuel cost

City
18.5 MPG
Highway
25 MPG
Combined
21 MPG
Annual fuel cost (EPA)
$3,800
15,000 mi/yr
Fuel
Premium
Current regular gas
$4.32/gal
national avg.

EPA figures; median across configurations of this model year. Estimate your own cost with the fuel cost calculator.

2015 compared with other Glk350 years

Complaint Index by model year (0 = fewest issues, 100 = most)0255075100200620072008201020112012201320142015
Complaint Index: 0 = fewest issues, 100 = most, relative to other years of this model. Avoid Caution Good Best
YearVerdictIndexComplaintsRecallsMPG
2013Caution50137621
2014Good38104521
2015Avoid75114421

All Mercedes-Benz Glk350 years: best and worst →

Frequently asked questions

Is the 2015 Mercedes-Benz Glk350 reliable?
Compared to other Glk350 model years, 2015 ranks 3rd-worst out of 9 years tracked, with a complaint index of 75 and an Avoid verdict based on NHTSA owner complaints and recalls.
What is the main problem with the 2015 Glk350?
Airbags are the top problem area, making up 74% of all complaints (84 of 114), with a median failure mileage of 41,500 miles.
Does the 2015 Glk350 have any recalls?
NHTSA lists 4 recall campaigns for the 2015 Glk350, covering airbags, steering, and an eCall software fault; none are do-not-drive recalls.
Which Glk350 model years are worse than 2015?
Among the years with data, 2010 (complaint index 100) and 2012 (complaint index 88) rank worse than 2015 (complaint index 75).
How many complaints does NHTSA have for the 2015 Glk350?
NHTSA lists 114 complaints for the 2015 Glk350, including 4 crashes, 2 fires, 4 injuries, and 1 death.

Sources: NHTSA Office of Defects Investigation complaint and recall databases; U.S. EPA fuel economy data; NHTSA 5-Star Safety Ratings. Complaints are unverified owner reports.

Data updated Sep 24, 2026. Read the methodology and data sources. The Complaint Index is based on NHTSA owner complaints and recalls; it is not a reliability rating.