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2018 Mercedes-Benz Glc 300 Problems and Recalls
Owners filed 87 complaints with NHTSA about the 2018 Mercedes-Benz Glc 300, most often about the engine (32% of complaints). It is the 3rd most complained-about Glc 300 model year since 2000 and has 12 recalls.
Most common 2018 Mercedes-Benz Glc 300 problems
Engine
28 complaints · 32%The contact owned a 2018 Mercedes-Benz glc300. While driving 55 MPH, the rear driver's side tire was punctured. The contact stated that the vehicle was equipped with 18 inch run flat tires. The contact pulled the vehicle over to the side of the road. After waiting approximately 70 minutes on the side of the road, the…
The contact owns a 2018 Mercedes-Benz glc300. The contact stated that while driving 65 MPH, the vehicle started to hesitate while depressing the accelerator pedal. The contact stated that the vehicle also started shaking and vibrating with the check engine warning light illuminated. The contact managed to pull the…
Other or unspecified
20 complaints · 23%Half of these problems showed up before 500 miles.
Was driving down highway during clear sunny day on 12/21/18 at about 2:30 pm on I-10 east just outside of houston when my sunroof suddenly exploded outward. No signs of any debris being flung up or striking sunroof and there were no vehicles close to US at the time.
August 8, 2019 while parking my car in a gas station and going at a low rate of speed I experienced a sudden acceleration of my vehicle. I was unable to stop the car and as a result hit the side of a building. The car was towed and repaired. Mercedes corporate was notified and they sent a mechanic to check the car. On…
Electrical
13 complaints · 15%The contact owns a 2018 Mercedes-Benz glc300. The contact stated that the vehicle doors automatically locked with the keys inside or outside of the vehicle. The vehicle was taken to Mercedes-Benz of alexandria (200 s pickett st, alexandria, va 22304, ([phone]) for diagnostic testing and repairs. The manufacturer was…
The steering column stalk controls drive, reverse, neutral and parking. I stopped the vehicle on an incline in a parking lot. I had my foot on the brake. I shifted into neutral. The engine was still running. I thought I pushed the park button but the car rolled back into another vehicle.
Body and structure
9 complaints · 10%Half of these problems showed up before 16,000 miles. Parts named most often: body.
The steering column stalk controls drive, reverse, neutral and parking. I stopped the vehicle on an incline in a parking lot. I had my foot on the brake. I shifted into neutral. The engine was still running. I thought I pushed the park button but the car rolled back into another vehicle.
The contact owned a 2018 Mercedes-Benz glc300. While driving 55 MPH, the rear driver's side tire was punctured. The contact stated that the vehicle was equipped with 18 inch run flat tires. The contact pulled the vehicle over to the side of the road. After waiting approximately 70 minutes on the side of the road, the…
Transmission
8 complaints · 9%Parts named most often: automatic transmission.
The steering column stalk controls drive, reverse, neutral and parking. I stopped the vehicle on an incline in a parking lot. I had my foot on the brake. I shifted into neutral. The engine was still running. I thought I pushed the park button but the car rolled back into another vehicle.
Electronic shiftier issue. Car will not do what is being input to the shiftier. Particular issue when going from park to drive, drive to reverse, or park to driver or reverse. (note that the pressure on brake pedal has always seemed excessive to me. Have had issue where car goes into neutral when trying to place the…
Seat belts
8 complaints · 9%The seat belt latch plates (the parts that insert into the buckles) for the rear seat retracted into the interior paneling, preventing the occupant from being able to use the seat belt. (refer to similar recall # 18v177000). Although there was a recall for the same issue, my VIN was not included. I was ultimately able…
The contact owns a 2018 Mercedes-Benz glc300. The contact stated that when the driver's side seat belt was buckled, the seat belt alarm chimed as if the seat belt was not buckled. The contact had to buckle and unbuckle the seat belt several times before the warning chime stopped. The contact had taken the vehicle to a…
Fuel system
7 complaints · 8%I was waiting at a red traffic signal on route 7 in leesburg, va and the vehicle was in eco mode with auto stop engaged. When the light changed to green I depressed the accelerator and the car immediately shut off and the gauges on the dash all lit. It took me three attempts but it finally restarted.
Air bags
6 complaints · 7%The contact owns a 2018 Mercedes-Benz glc300. The contact stated that the air bag warning light was illuminated at start-up. The contact took the vehicle to Mercedes-Benz of myrtle beach (936 jason blvd, myrtle beach, sc 29577) where she was informed that the air bag control unit processor was defective and needed to…
The contact owns a 2018 Mercedes-Benz glc300. The contact stated while driving approximately 30 MPH, the air bag warning light illuminated. Additionally, the contact stated that he observed a rattling noise emanating from the steering column while making right turns. The vehicle was taken to an independent mechanic…
Complaints are owner reports to NHTSA, not verified defects. One complaint can name several components, so shares add up to more than 100%.
2018 Mercedes-Benz Glc 300 recalls
Body and structure: roof and pillars
Risk: A detached roof panel can become a road hazard, increasing the risk of a crash.
Fix: Dealers will replace the front panel, free of charge. Owner notification letters were mailed on august 2, 2024. Owner notification letters will be mailed in phases, on, march 22,2024, and august 2, 2024. Owners may contact mbusa customer service at 1-800-367-6372. This recall is an expansion of NHTSA recall number 21v-197.
Full defect summary
Mercedes-benz USA, llc (mbusa) is recalling certain 2014-2020 c-class, cla, gla, s-class, glc, and gle vehicles. Please refer to mbusa's recall report for specific vehicle details. The front roof panel located between the windshield and the panoramic sunroof may not have been bonded correctly to the vehicle during a prior repair, allowing the front panel to detach from the vehicle.
Electrical: software
Risk: A disabled ecall system would prevent a vehicle occupant from contacting the emergency services call center in an emergency, potentially delaying emergency responders and increasing the risk of injury.
Fix: The communication module software will be updated through an over-the-air (OTA) update or by a dealer, free of charge. Owner notification letters were mailed july 8, 2022. Owner notification letters will be mailed in phases, on july 8, 2022, may 17, 2024, july 29, 2024, and september 27, 2024. Owners may contact mbusa customer service at 1-800-367-6372. Mbusa's numbers are for this recall is 2022060005 and 2023110006.
Full defect summary
Mercedes-benz USA, llc (mbusa) is recalling certain 2017-2022 cla-class, gla-class, gle-class, gls-class, slc-class, a-class, amg gt-class, c-class, e-class, s-class, sl-class, glc-class, cls-class, glb-class, and g-class vehicles. Please refer to mbusa's recall report for specific vehicle model details. An error in the communication module's sim card software can cause a mobile network connection failure, disabling the emergency call (ecall) system.
Body and structure: roof and pillars
Risk: The adhesive bonding of the front panel might deteriorate, possibly causing the front panel to detach from the vehicle and become a road hazard, increasing the risk of a crash.
Fix: Mercedes-benz dealer will remove the bonded panel and will install a new front panel by following the detailed repair instructions and using the approved primer, cleaner and adhesive, free of charge. Owner notification letters were mailed on september 3, 2021 and october 26, 2021. Owners may contact mbusa customer service at 1-800-367-6372.
Full defect summary
Mercedes-benz USA, llc (mbusa) is recalling certain 2017-2020 c300 coupe, c43 coupe amg, c43 amg, 2015-2020 c300, gla250, 2016-2018 c350e, cla45 coupe amg, 2015 c400, s65 amg, 2015-2019 c63 amg, 2016 c450, 2015-2016 gla45 amg, s600, 2016-2020 glc300, 2017-2019 glc43 amg, gle43 coupe amg, 2014-2019 cla250 coupe, 2014-2015 cla45 amg, 2018 glc63 amg, 2014-2017 s550, 2018-2020 s450, 2016-2019 gle63 coupe amg, 2016 gle450 coupe, 2014-2020 s63 amg, 2018-2019 s560, and 2019 glc350e vehicles equipped with a panoramic sunroof. The front roof panel located between the windshield and the panoramic sunroof may not have been bonded correctly to the vehicle during a prior repair.
Infotainment and connectivity: auto crash notification
Risk: A disabled ecall system would prevent a vehicle occupant from contacting emergency services through the call center in an emergency, potentially delaying emergency responders and increasing the risk of injury.
Fix: Mbusa will notify owners, and dealers will inspect the communication module and activate it, if necessary, free of charge. The recall began march 31, 2021. Letters for the owners of the 9 additional vehicles were mailed july 9, 2021. Owners may contact mbusa customer service at 1-800-367-6372. Mbusa's number for this recall is 2021030005.
Full defect summary
Mercedes-benz USA, llc (mbusa) is recalling certain 2017-2019 c300, e300, 2018-2020 cla250, 2020 cls450, amg e53, amg gt53, gle450, 2018 amg e63, amg gta, 2017-2020 gla250, glc300, 2019 glc350, amg glc43, 2017-2018 gle350, 2019 amg glc 43, glc350, gle400, 2017 gls450, s550, c300 cabrio, and 2018-2019 s560 vehicles. On june 18, 2021, an additional 9 vehicles were added, including certain 2021 gla250, glc300, 2018 s450, e400, and 2017 cla250 vehicles. The communication module might have been inadvertently deactivated during a service visit, which could have disabled the emergency call (ecall) function.
Infotainment and connectivity: auto crash notification
Risk: Failure of the ecall system may result in emergency responders being dispatched to the wrong location, increasing the risk of injury following a crash.
Fix: Mbusa will notify owners, and the communication module software will be updated by a dealer, or through an over-the-air (OTA) update, free of charge. The recall began march 12, 2021. Owners may contact mbusa customer service at 1-877-762-8267. Mbusa's number for this recall is 2021020025.
Full defect summary
Mercedes-benz USA, llc (mbusa) is recalling certain 2016 - 2021 cla-class, gla-class, gle-class, gls-class, slc-class, a-class, gt-class, c-class, e-class, s-class, cls-class, sl-class, b-class, glb-class, glc-class, and g-class vehicles. Please refer to the part 573 report for specific vehicle model details. The software design of the communication module may fail to communicate the correct vehicle location for the emergency call system (ecall) in the event of a crash.
Air bags: occupant classification
Risk: If the passenger air bag is incorrectly displayed as 'on' when it is not, a front seat passenger may be unaware that the air bag will not deploy in the event of a crash, increasing their risk of injury.
Fix: Mbusa will notify owners, and dealers will update the audio head unit software, free of charge. The recall began january 3, 2019. Owners may contact mbusa customer service at 1-800-367-6372. Mbusa's number for this recall is 2018120009.
Full defect summary
Mercedes-benz USA, llc (mbusa) is recalling certain 2018 c300 cabriolet, c300 coupe, c300 4matic cabriolet, c300, c300 4matic coupe, c300 4matic, c43 amg cabriolet, c43 amg coupe, c63 s amg cabriolet, c350e plug-in hybrid, c63 amg cabriolet, c63 amg coupe, c63 s amg coupe, c63 amg, c63 s amg, 2018-2019 glc300 4matic coupe, glc300, glc63 amg coupe, glc300 4matic, glc350e plug-in hybrid, glc43 amg coupe, glc43 amg, glc63 s amg coupe, and glc63 amg vehicles equipped with audio 20 head units and automatic child seat recognition. The status of the passenger side air bag may not display correctly.
Seat belts: buckle assembly
Risk: If the rear seat passengers cannot fasten their seat belts, they have an increased risk of injury in the event of a crash.
Fix: Mbusa will notify owners, and dealers will install felt strips between the c-pillar and rear side paneling, free of charge. The recall began november 2, 2018. Owners may contact mbusa customer service at 1-800-367-6372. Mbusa's number for this recall is 2018100002.
Full defect summary
Mercedes-benz USA, llc. (mbusa) is recalling certain 2016-2018 mercedes-benz glc300 and glc300 4matic, 2018 glc350e and glc63 amg 4matic and 2017-2018 glc43 amg 4matic vehicles. The seat belt latch plates (the parts that insert into the buckles) for the outboard rear seats may retract into the interior paneling, preventing the occupants from being able to use the seat belts.
Lights: turn signal
Risk: Turn signals that are the wrong color may not be as easily recognized by other drivers, increasing the risk of a crash.
Fix: Mbusa will notify owners, and dealers will inspect the color of the turn signal, replacing the LED module as necessary, free of charge. The recall began november 2, 2018. Owners may contact mbusa customer service at 1-800-367-6372.
Full defect summary
Mercedes-benz USA, llc (mbusa) is recalling certain 2018 glc300 4matic coupe, glc300, glc300 4matic, glc350e 4matic, glc43 amg 4matic coupe, and glc43 amg 4matic vehicles equipped with LED headlights. The front turn signals may have an incorrect color of pink or violet. As such, these vehicles fail to comply with the requirements of federal motor vehicle safety standard (fmvss) number 108, "lamps, reflective devices, and associated equipment."
Air bags: inflator module
Risk: In the event of a crash involving driver air bag deployment, an improperly inflated air bag and/or an inflator rupture with sharp metal fragments might result in serious injury or death to the driver or to occupants.
Fix: Mbusa will notify owners, and dealers will replace the front driver air bag module, free of charge. The recall is expected to begin may 29, 2018. Owners may contact mbusa customer service at 1-800-367-6372.
Full defect summary
Mercedes-benz USA llc (mbusa) is recalling certain 2018 amg gt, amg gt c, glc43 amg 4matic, glc300, glc300 4matic and glc350e 4matic vehicles. The housing for the driver side air bag inflator may have been made with defective steel. In the event of an air bag deployment, the defective steel may cause the inflator to improperly inflate the driver-side air bag and potentially rupture.
Seat belts: buckle assembly
Risk: If the rear seat passengers cannot fasten their seat belts, they have an increased risk of injury in the event of a crash.
Fix: Mbusa will notify owners, and dealers will install a buffer to the c-pillar paneling, free of charge. The recall is expected to begin may 14, 2018. Owners may contact mbusa customer service at 1-800-367-6372. Mbusa's number for this recall is 2018030012.
Full defect summary
Mercedes benz USA llc (mbusa) is recalling certain 2017-2018 glc43 amg, 2016-2018 glc300 4matic, 2016-2018 glc300, 2018 glc63 amg 4matic, and 2018 glc350e 4matic vehicles. The seat belt latch plates (the parts that insert into the buckles) for the outboard rear seats may retract into the interior paneling, preventing the occupants from being able to use the seat belts.
Visibility and wipers: sun/moon roof assembly
Risk: If the sun roof panels detach from the vehicle, it can increase the risk of a crash or injury for following traffic.
Fix: Mbusa will notify owners, and dealers will inspect the bonding on the sun roof panels, correcting it as necessary, free of charge. The recall is expected to begin december 2017. Owners may contact mbusa customer service at 1-800-367-6372. Mbusa's number for this recall is 2017110009.
Full defect summary
Mercedes-benz USA, llc (mbusa) is recalling certain 2017-2018 glc300, glc300 4matic, and glc43 amg vehicles. The fixed panoramic sun roof frontal and side plastic panels may have insufficient bonding, allowing the panels to separate during vehicle operation.
Air bags: frontal
Risk: If the driver air bag inadvertently deploys, it can increase the risk of injury and a crash.
Fix: 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.
Full defect summary
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 wago
Recall repairs are free at any franchised dealer. Enter your VIN at nhtsa.gov/recalls to see which recalls are still open on your car.
NHTSA defect investigations
Desiccated air bag inflator rupture
Summary
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 substa
Front roof panel detachment
Summary
On january 8, 2021, after ongoing review with mercedes benz, the national highway traffic safety administration (NHTSA) office of defects investigation (odi) opened pe21-001 to assess allegations of front roof panel detachments while driving at highway speeds in certain 2015 mercedes-benz (mercedes) c-class vehicles.the subject front roof panel is a stationary panel composed of polycarbonate and is attached to the vehicle via adhesive at the time of manufacture. The panel is found on subject vehicles equipped with panoramic sunroofs. Over time, the subject panels may exhibit cosmetic degradation leading to replacement of the panel, a procedure which entails: removal of the old panel and adhe
Questions about the 2018 Mercedes-Benz Glc 300
- What are the most common problems with the 2018 Mercedes-Benz Glc 300?
- By NHTSA owner complaints: engine (28 complaints); other or unspecified (20 complaints, typically around 500 miles); electrical (13 complaints).
- How many recalls does the 2018 Mercedes-Benz Glc 300 have?
- 12 recalls listed by NHTSA, the latest from December 15, 2023 (body and structure). Check your VIN at nhtsa.gov/recalls to see which ones are still open on your car.
- Is the 2018 a bad year for the Mercedes-Benz Glc 300?
- It is the 3rd most complained-about Glc 300 model year since 2000, with 87 complaints. Complaint counts are not adjusted for how many cars were sold, so popular years collect more of them, and the newest years have had less time to.