2023 Mercedes-Benz Glc300 Reliability Data: Problems & Recalls
Avoid The 2023 Mercedes-Benz Glc300 ranks 2nd worst out of 10 model years, with a complaint index of 89 and 55 complaints, mostly electrical (64%). It carries 12 recall campaigns and a verdict of Avoid relative to other Glc300 years.
Based on NHTSA complaints per model-year, not a reliability rating. Methodology
YearToAvoid Scorecard
- Complaint Index
- 89/100
- #2 of 10 Glc300 years
- Verdict
- Avoid
- vs. other years of this model
- Complaints
- 55
- unique NHTSA reports
- Recalls
- 12
- distinct NHTSA campaigns
- Crashes
- 2
- reported in complaints
- Fires
- 0
- Injuries
- 2
- Top issue
- Electrical System
- NHTSA overall rating
- Not rated
- EPA combined MPG
- 26
- 23 city / 31 hwy
- Injuries / deaths
- 2 / 1
Top 2023 Mercedes-Benz Glc300 problems
Share of this year’s NHTSA 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%)
A complaint can list more than one component, so shares add up to more than 100%. Shares are % of complaints.
What owners report
- Vehicles sometimes stall or lose power at low speed while braking, with the instrument cluster going black.
- The 12-volt or 48-volt onboard electrical system fails, triggering multiple warning lights and leaving the car undrivable for over an hour in some cases.
- The engine shuts off while driving, showing battery service and engine warning messages before restarting after a long wait.
- Push-start ignition and alarm systems malfunction, preventing the car from starting or shifting out of park.
- Blind spot monitor and emergency stop assist systems report as unavailable or inoperative.
- Panoramic moonroof fails to close and owners report a sloshing water sound inside the vehicle.
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 Glc300 ranks 2nd worst among 10 model years with a complaint index of 89 and 55 complaints, earning an Avoid verdict relative to other years of this model.
- What is the biggest problem with the 2023 Glc300?
- Electrical System complaints make up 64% of all reports (35 of 55), with a median failure mileage of 8,500 miles, covering issues like stalling, dead instrument clusters, and 12V/48V system failures.
- Does the 2023 Glc300 have recalls?
- Yes, NHTSA lists 12 recall campaigns for the 2023 Glc300, covering electrical system fuse boxes, headlights, steering coupling bolts, seat rail bolts, and dashboard bolts, though none are do-not-drive recalls.
- How does the 2023 Glc300 compare to other years?
- The 2023 model's complaint index of 89 is higher than every year except 2016 (100), and worse than 2017 through 2022, which range from 11 to 78.