2023 Mercedes-Benz Glc300 Problems, Recalls & Reliability
Verdict
AvoidComplaint Index
100/100
#1 most-complained of 10 Glc300 years
Based on NHTSA complaints per model-year, not a reliability rating. Methodology
The 2023 Mercedes-Benz Glc300 ranks worst of 10 model years tracked, with a complaint index of 100 and 55 complaints, most tied to the Electrical System (64% share). It carries 12 recalls and NHTSA data shows 2 crashes, 1 death, and a median failure mileage of 8,500 miles.
- Complaints
- 55
- Recalls
- 12
- Crashes / fires
- 2 / 0
- Injuries / deaths
- 2 / 1
- NHTSA overall rating
- Not rated
- EPA combined MPG
- 26
- 23 city / 31 hwy
Top 2023 Mercedes-Benz Glc300 problems
NHTSA owner complaints by component group. Groups with 15+ complaints have their own page.
- Electrical System35 (64%)
- Engine16 (29%)
- Other9 (16%)
- Collision Avoidance & Cameras7 (13%)
- Lane Departure6 (11%)
- Brakes5 (9%)
- Fuel System5 (9%)
- Structure & Body4 (7%)
- Transmission & Powertrain3 (5%)
- Steering2 (4%)
What owners report
- Vehicle stalls or shuts off while driving or parking, with warning lights covering the instrument cluster.
- 12V and 48V onboard electrical system failures trigger alarms and prevent the car from starting for extended periods.
- Push-start/stop system stops responding, locks disable, and blind spot assist shows inoperative during electrical faults.
- Moon roof fails to close and owners report sloshing water sounds along with intermittent blind spot monitor and digital light issues.
- Emergency stop assist and blind spot assist display as unavailable or inoperative.
- Brakes activate unexpectedly while passing another vehicle at highway speed, nearly causing a rear-end collision.
2023 Mercedes-Benz Glc300 recalls
12 NHTSA recall campaigns list this model year.
- NHTSA 26V481000Jul 24, 2026Structure & Body310,667 vehicles
Latches/locks/linkages:doors:lock
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2020-2021 CLA, 2019-2022 A-Class, 2022-2023 C-Class, 2024 CLE, 2020-2026 GLA/GLB, and 2023-2024 GLC vehicles. Please refer to MBUSA's recall report for specific model information. The micro-switch in the driver's door lock may corrode and fail to detect an open door, preventing the electronic parking brake or "Auto-Park" feature from engaging automatically. This may result in a vehicle rollaway.
Risk: A vehicle rollaway increases the risk of a crash or injury.
Remedy: Dealers will replace the driver's door lock, free of charge. Owner notification letters are expected to be mailed September 18, 2026. Owners may contact MBUSA customer service at 1-800-367-6372. Vehicle Identification Numbers (VINs) involved in this recall will be searchable on NHTSA.gov beginning July 31, 2026.
- NHTSA 25V533000Aug 20, 2025Steering3,749 vehicles
Steering:critical fasteners
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.
- NHTSA 25V365000Jun 11, 2025Electrical System127 vehicles
Exterior lighting:headlights
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2023 GLC 300 and GLC 300 4MATIC vehicles. The headlights are missing adjustment prevention caps, which can allow the headlights to be improperly adjusted. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 108, "Lamps, Reflective Devices, and Associated Equipment."
Risk: Improperly adjusted headlights can reduce visibility, increasing the risk of a crash.
Remedy: Dealers will inspect the headlights for sealing caps and install caps as necessary, free of charge. Owner notification letters were mailed July 18, 2025. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2025060005.
2023 Mercedes-Benz Glc300 fuel economy and fuel cost
- City
- 23 MPG
- Highway
- 31 MPG
- Combined
- 26 MPG
- Annual fuel cost (EPA)
- $3,050
- 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.
2023 compared with other Glc300 years
Frequently asked questions
- Is the 2023 Mercedes-Benz Glc300 reliable?
- Based on NHTSA owner complaints and recalls, the 2023 model has the highest complaint index (100) among the 10 model years tracked, ranking it worst overall with an Avoid verdict.
- What is the main problem with the 2023 Glc300?
- The Electrical System is the top problem area, accounting for 64% of complaints (35 of 55), with issues reported at a median mileage of 8,500 miles.
- How many recalls does the 2023 Glc300 have?
- NHTSA lists 12 recalls for the 2023 Glc300, covering components including the electrical system, structure and body, and steering. None are do-not-drive recalls.
- Were there any crashes or injuries reported?
- NHTSA data lists 2 crashes, 2 injuries, and 1 death associated with 2023 Glc300 complaints.
- How does 2023 compare to other Glc300 years?
- The 2023 model year has the worst complaint index (100) among all 10 years tracked, compared to years like 2019 and 2024 which rank as Best with complaint indexes of 0 and 11.