While loading grocery bags in the rear compartment the hatch closed on my back without any warning. I had to physically lift it off my back. It did not trigger any release or raise on its own
The worst 2026 Mercedes-Benz GLC 300 problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
- Electrical1
Problems by type
Tap a problem to see which part fails, at what mileage and in which other years.
- Electrical1
Recalls 3
Electrical system: instrument cluster/panel
- What is wrong
- Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2024-2026 AMG GT, C-Class, E-Class, SL, CLE, and GLC vehicles. The infotainment control unit may reset while the vehicle is in motion and cause the instrument panel display to go blank.
- Risk
- An instrument panel display that fails to show critical safety information, such as the speedometer and warning lights, increases the risk of a crash.
- Remedy
- Dealers will update the infotainment control unit software, free of charge. Owner notification letters were mailed June 29, 2026. MBUSA's number for this recall is 2026050004. Owners may contact MBUSA customer service at 1‑800‑367‑6372. Vehicle Identification Numbers (VINs) involved in this recall will be searchable on beginning May 8, 2026.
Recall number 26V281000 · Recall details
Seat belts: rear/other
- What is wrong
- Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2026 AMG GLC43 4MATIC, GLC 300 4MATIC, GLC 300, and GLC 300 4MATIC Coupe vehicles. The center rear seat belts may have been installed without the child seat protection function and fail to lock a child restraint properly. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 208, "Occupant Crash Protection," and FMVSS number 209, "Seat Belt Assemblies."
- Risk
- In the event of a crash, an insufficiently restrained child has an increased risk of injury.
- Remedy
- Dealers will inspect and replace the center rear seat belt assembly as necessary, free of charge. Owner notification letters were mailed May 15, 2026. Owners may contact MBUSA customer service at 1‑800‑367‑6372. Vehicle Identification Numbers (VINs) involved in this recall will be searchable on beginning March 27, 2026.
Recall number 26V172000 · Recall details
Steering: critical fasteners
- What is wrong
- Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2023-2026 EQE and GLC vehicles. Please see the recall report for a complete list of models. The steering coupling bolt may have been improperly tightened, allowing the steering coupling to loosen from the steering rack.
- Risk
- A loose steering coupling can cause a loss of steering control, increasing the risk of a crash.
- Remedy
- Dealers will tighten the steering coupling bolts as necessary, free of charge. Owner notification letters were mailed October 6, 2025. Owners may contact MBUSA customer service at 1‑800‑367‑6372.
Recall number 25V533000 · Recall details
Technical service bulletins for the 2026 Mercedes-Benz GLC 300 114
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- Issue Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, is launching an OTA update to the...
- Wheezing noises/squeaking noises from the front shock absorbers when passing over surface undulations and...
- Issue A software update will be performed that provides enhancements to the robustness and system...
- Slight creaking noises when steering
- CEL illuminates and/or AC does not blow cold
- Repeat workshop visit for vehicle vibration while braking from 60MPH. NOTE: Although the symptom is...
- Issue after OTA Update IC Odometer Reading blank("_ _ _ _") IC Maintanence data unavailable
- Radio station cover art does not refresh when switching stations
- Whining / humming noises (described as foghorn‑like) from the drivetrain in the rear axle area during...
- Clanking noise from the area of the speakers in the doors
2026 Mercedes-Benz GLC 300 fuel economy
Official EPA estimates in miles per gallon (MPGe for electric). Ranges cover trims that share the same engine.
| Engine | Drive | City | Highway | Combined |
|---|---|---|---|---|
| 2.0L 4‑cyl Hybrid | RWD | 24 | 32 | 27 |
| 2.0L 4‑cyl Hybrid | AWD | 23 | 31 | 26 |
What 2026 Mercedes-Benz GLC 300 owners say
Most recent owner complaints, unedited.
The MBUX/center display has malfunctioned repeatedly. The enter display suddenly went to completely black on the three separate occasions, and on one additional occasion three times. MBUX system froze and became completely unresponsive. These are four separate incidents, not a one-time occurrence. The failures occurred without warning and the system could not be operated normally. This creates a safety concern because loss of the center display while driving may prevent access to vehicle information, warnings, camera functions, and other functions controlled through the display. The vehicle is available for inspection. I have reported the problem to Mercedes-Benz and requesting dealer inspection and repair. The cause is currently unknown.
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Other model years
Questions about the 2026 Mercedes-Benz GLC 300
Is the 2026 Mercedes-Benz GLC 300 reliable?
Owners have filed 2 complaints about the 2026 Mercedes-Benz GLC 300, fewer than a typical GLC 300 model year.
What is the most common problem with the 2026 Mercedes-Benz GLC 300?
Electrical system, with 1 complaint.
How many recalls does the 2026 Mercedes-Benz GLC 300 have?
3 recalls, covering electrical system, seat belts and steering.
Was there a recall on the 2026 Mercedes-Benz GLC 300 electrical?
Yes, 1 recall: 26V281000. Check your VIN to see if your car still needs the free repair.
What year does the Mercedes-Benz GLC 300 have the most electrical problems?
The Mercedes-Benz GLC 300 model years with the most electrical complaints are 2023 (30 complaints), 2017 (16 complaints) and 2019 (14 complaints).
What gas mileage does the 2026 Mercedes-Benz GLC 300 get?
Official estimates for the 2026 Mercedes-Benz GLC 300 range from 26 to 27 mpg combined. The most efficient version (2.0L 4-cyl hybrid, RWD) gets 24 city and 32 highway.
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