2018 Mercedes-Benz Glc 300: Recalls, Problems & MPG
Here are the deets on the 2018 Mercedes-Benz Glc 300: 12 recalls, 87 owner complaints and up to 24 mpg combined.
Recalls
12 vehicle recalls from the manufacturer. Repairs are free. Check your VIN to see if one is still open on your car.
Airbags Vehicle recall #17V627000 · 2017 · 495,290 vehicles
What's wrong: 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…
Why it matters: If the driver air bag inadvertently deploys, it can increase the risk of injury and a crash.
The 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.
Visibility (wipers, glass) Vehicle recall #17V715000 · 2017 · 9,379 vehicles
What's wrong: The fixed panoramic sun roof frontal and side plastic panels May have insufficient bonding, allowing the panels to separate during vehicle operation.
Why it matters: If the sun roof panels detach from the vehicle, it can increase the risk of a crash or injury for following traffic.
The 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.
Seat belts, Body & structure Vehicle recall #18V177000 · 2018 · 121,858 vehicles
What's wrong: 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.
Why it matters: If the rear seat passengers cannot fasten their seat belts, they have an increased risk of injury in the event of a crash.
The 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.
Airbags Vehicle recall #18V208000 · 2018 · 57 vehicles
What's wrong: 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.
Why it matters: 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.
The 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.
Exterior lights Vehicle recall #18V610000 · 2018 · 4,702 vehicles
What's wrong: 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."
Why it matters: Turn signals that are the wrong color May not be as easily recognized by other drivers, increasing the risk of a crash.
The 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.
Seat belts, Body & structure Vehicle recall #18V683000 · 2018 · 4,702 vehicles
What's wrong: 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.
Why it matters: If the rear seat passengers cannot fasten their seat belts, they have an increased risk of injury in the event of a crash.
The 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.
Airbags Vehicle recall #18V838000 · 2018 · 104,663 vehicles
What's wrong: The status of the passenger side air bag May not display correctly.
Why it matters: 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.
The fix: Mbusa will notify owners, and dealers will update the audio head unit software, free of charge. The recall began January 3, 2019.
Communication, Electrical Vehicle recall #21V058000 · 2021 · 1,292,258 vehicles
What's wrong: 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.
Why it matters: Failure of the ecall system May result in emergency responders being dispatched to the wrong location, increasing the risk of injury following a crash.
The 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.
Communication, Communication Vehicle recall #21V072000 · 2021 · 67 vehicles
What's wrong: 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.
Why it matters: 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.
The 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.
Body & structure Vehicle recall #21V197000 · 2021 · 15,096 vehicles
What's wrong: 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.
Why it matters: 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.
The 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.
Communication, Electrical Vehicle recall #22V365000 · 2022 · 242,722 vehicles
What's wrong: 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.
Why it matters: 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.
The 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.
Body & structure Vehicle recall #23V854000 · 2023 · 2,976 vehicles
What's wrong: 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.
Why it matters: A detached roof panel can become a road hazard, increasing the risk of a crash.
The 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.
Most-reported problems
Owner complaints filed with NHTSA, by component. One complaint can list several components. 1 mention a fire, 2 injuries and 0 deaths were reported.
What owners describe
- Engine (28): the most common themes are warning light on (8), fire / smoke (2).
- Other / unknown (20): the most common themes are warning light on (6).
- Electrical (13): the most common themes are warning light on (4).
- Body & structure (9): the most common themes are noise or vibration (2).
The 2018 Mercedes-Benz Glc 300 has 87 owner complaints, ranking #1 of 9 Glc 300 model years for complaints (1.9× the average Glc 300 year). Complaints peaked in 2023 (26 filed that year). The typical problem showed up when the car was about 5 years old, at a median of 10,500 miles. Neighboring years: 2019 (47 complaints, 12 recalls).
Engines & fuel economy (EPA)
| Engine | Transmission | Drive | City | Hwy | Comb. | Fuel |
|---|---|---|---|---|---|---|
| 2.0 L 4-cyl turbo | Automatic 9-spd | Rear-Wheel Drive | 22 | 28 | 24 | Premium |
Want the full repair deets? Get the factory manual.
Recall and complaint data tells you what goes wrong. A service manual tells you how to fix it: torque specs, wiring diagrams, fluid capacities and step-by-step procedures for the 2018 Mercedes-Benz Glc 300.
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FAQ
Does the 2018 Mercedes-Benz Glc 300 have any recalls?
Yes. NHTSA lists 12 vehicle recalls for the 2018 Mercedes-Benz Glc 300. Recall repairs are free at any dealer, no matter how old the car is. Check your VIN at nhtsa.gov/recalls.
What are the most common 2018 Mercedes-Benz Glc 300 problems?
Owners have filed 87 complaints with NHTSA. The most-reported areas are engine (28), other / unknown (20), electrical (13).
What gas mileage does the 2018 Mercedes-Benz Glc 300 get?
EPA ratings run up to 24 mpg combined (2.0 L, Automatic 9-spd), across 1 engine and transmission combos.
Where can I get a 2018 Mercedes-Benz Glc 300 repair manual?
eManualOnline sells downloadable manuals, Mitchell 1 DIY and ALLDATAdiy sell online access to factory repair data, and Haynes sells printed guides and online access. Pick a download if you want to keep it, or a subscription for wiring diagrams and TSBs.