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Mercedes-Benz GLC-Class reliability and problems by year
Owners have filed 790 complaints about the Mercedes-Benz GLC-Class with NHTSA since 2015, most often about engine and electrical system. Mercedes-Benz has filed 16 warranty extensions and 29 service campaigns for it, and there are 60 safety recalls on file.
From NHTSA's public data files, downloaded 2026-10-10.
How reliable is the Mercedes-Benz GLC-Class? What NHTSA's records show
We don't give the GLC-Class a reliability score. NHTSA publishes complaint counts but no sales figures, so complaints can't be turned into a rate or compared between models. Here is what's on file for model years 2015 on.
- Owner complaints
- 790
- Filed with NHTSA, all model years
- Warranty extensions
- 16
- Filed by Mercedes-Benz
- Service campaigns
- 29
- Filed by Mercedes-Benz
- Safety recalls
- 60
- Each covers part of the model
Every model year compared
Complaints rise with how many were sold and how long they've been on the road, so a newer or rarer year will show fewer. Compare years of the GLC-Class with each other.
| Year | Complaints | Most named | Recalls | Warranty / campaigns |
|---|---|---|---|---|
| 2026 | 10 | Electrical system (50%) | 3 | 2 |
| 2025 | 48 | Electrical system (60%) | 4 | 2 |
| 2024 | 31 | Engine (26%) | 8 | 13 |
| 2023 | 64 | Electrical system (47%) | 12 | 20 |
| 2022 | 63 | Steering (22%) | 2 | 16 |
| 2021 | 75 | Engine (44%) | 9 | 25 |
| 2020 | 80 | Engine (34%) | 20 | 19 |
| 2019 | 61 | Electrical system (30%) | 14 | 20 |
| 2018 | 99 | Engine (32%) | 14 | 18 |
| 2017 | 116 | Engine (34%) | 12 | 15 |
| 2016 | 141 | Engine (28%) | 12 | 14 |
| 2015 | 2 | Airbags (100%) | 0 | 0 |
Look up one model year, or a VIN
See the complaints, recalls and warranty extensions for a single GLC-Class model year, with the typical mileage when owners reported each problem.
Acknowledged by Mercedes-Benz
Warranty extensions and service campaigns Mercedes-Benz filed with NHTSA for the GLC-Class, in its own words. A warranty extension means Mercedes-Benz pays for the repair beyond the normal warranty.
- Warranty extensionJul 2026· Engine· model years 2018–2026
Complaint Check Engine Light ON with DTC P012800 "The Coolant Temperature is Below the Specified Temperature" active and/or stored in the ME (N3/10).
- Warranty extensionFeb 2026· Engine· model years 2019–2023
Complaint -Check engine light illuminated. -Engine runs rough.
- Warranty extensionJan 2026· Engine· model years 2016–2018, 2020–2023
Dear Mercedes-Benz Owner: In our continuing efforts to ensure the proper performance of Mercedes-Benz products and to enhance the satisfaction of our customers, Mercedes-Benz USA is extending the warranty coverage on the exhaust valve system in your vehicle from the original New…
- Warranty extensionAug 2024· Electrical system· model years 2016–2026
Mercedes-Benz AG ("MBAG"), the manufacturer of Mercedes-Benz vehicles, has determined that on certain Model Year (“MY”) C-Class, E-Class, S-Class, G-Class, CL, CLS, ML, GL, GLE, GLS, GLC, SL, and AMG GT (204, 205, 207, 212, 213, 217, 221, 222, 463, 216, 218, 166, 292, 253, 231,…
- Warranty extensionAug 2024· Engine· model years 2016–2019
In our continuing efforts to assure the proper performance of Mercedes-Benz products and to enhance the satisfaction of our customers, Mercedes-Benz USA (“MBUSA”) is extending the coverage for the intake line assembly on your vehicle from the original New Vehicle Limited…
- Warranty extensionApr 2024· Engine and cooling· model years 2016–2021
Check engine light illuminated Fault code stored in N3/10 control unit- P052E71 Positive Crankcase Ventilation Regulator Valve Performance: The valve for crankcase ventilation has a malfunction The partial-load ventilation valve (a part of the intake line assembly) may not work…
- Warranty extensionApr 2024· Fuel system· model years 2016–2023
IMPORTANT EMISSION EXTENDED WARRANTY INFORMATION In our continuing efforts to assure the proper performance of Mercedes-Benz products and to enhance the satisfaction of our customers, Mercedes-Benz USA, LLC ("MBUSA") is extending the warranty coverage on the Fuel System Control…
- Warranty extensionJan 2024· Fuel system· model years 2018–2020
In our continuing efforts to assure the proper performance of Mercedes-Benz products and to enhance the satisfaction of our customers, Mercedes-Benz USA, LLC (MBUSA) is extending the warranty coverage for the pressure sensor in certain Model Year (MY) hybrid vehicles listed…
- Warranty extensionDec 2023· Electrical system· model years 2020–2021, 2023
In our continuing efforts to assure the proper performance of Mercedes-Benz products and to enhance the satisfaction of our customers, Mercedes-Benz USA, LLC ("MBUSA") is extending the warranty coverage on the engine thermostat (including software update) installed in certain…
- Warranty extensionAug 2023· Engine and cooling· model years 2016–2020
In our continuing efforts to assure the proper performance of Mercedes-Benz products and to enhance the satisfaction of our customers, Mercedes-Benz USA, LLC (âMBUSAâ) is extending the warranty coverage on the intake line assembly in certain Model Year (âMYâ) vehicles…
- Warranty extensionJul 2023· Fuel system· model years 2016–2020
In our continuing efforts to assure the proper performance of Mercedes-Benz products and to enhance the satisfaction of our customers, Mercedes-Benz USA, LLC (âMBUSAâ) is extending the warranty coverage on the fuel supply hose in certain Model Year (âMYâ) vehicles listed…
- Warranty extensionAug 2022· Cruise control and speed control· model years 2016–2019
Mercedes-Benz AG (“MBAG”), the manufacturer of Mercedes-Benz vehicles, has extended the warranty for the accelerator pedal wiring harness and connectors from the original New Vehicle Limited Warranty of 4 years/50,000 miles to 10 years/120,000 miles for certain Model Year (“MY”)…
- Warranty extensionJul 2022· Electrical system· model years 2016–2019
Mercedes-Benz AG (âMBAGâ), the manufacturer of Mercedes-Benz vehicles, has extended the warranty for the accelerator pedal wiring harness and connectors from the original New Vehicle Limited Warranty of 4 years/50,000 miles to 10 years/120,000 miles for certain Model Year…
Manufacturer reference ELW-AccelPedal: quote it to a dealer to check whether a car is covered.
- Warranty extensionJun 2022· Engine· model years 2018–2019
In our continuing efforts to assure the proper performance of Mercedes-Benz products and to enhance the satisfaction of our customers, Mercedes-Benz USA (“MBUSA”) is extending the coverage for the ignition coil on your vehicle from the original New Vehicle Limited Warranty of 4…
- Warranty extensionAug 2021· Fuel and propulsion· model years 2016–2018
This NCU replaces the prior NCU issued on July 30, 2021 and includes an additional population (33) of certain MY 2018 Baumusters covered under this extended warranty.
- Warranty extensionJan 2015· Fuel and propulsion· model years 2016–2018
In our continuing efforts to enhance the satisfaction of our customers, Mercedes-Benz USA, LLC (MBUSA) has decided to extend the warranty for certain fuel tank components in certain Mercedes-Benz vehicles.
- Service campaignSep 2024· Fuel and propulsion· model years 2023–2024
1. Connect XENTRY Diagnosis. 2. Update Fuel System Control Unit (FSCU10) software.
- Service campaignJul 2024· Other or unspecified· model years 2023–2024
Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain MY 2022-2025 GLE/GLS (167 platform), EQB (243 platform), GLA/GLB (247 platform), EQE (294 platform), EQS (296 platform), and GLC (254 platform) vehicles, the B-pillar certification label…
- Service campaignJul 2024· Other or unspecified· model years 2023–2024
Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain MY 2023-2025 EQB, GLA, and GLC vehicles (243, 247, and 254 platform), the B-pillar certification label might not contain the vehicle’s rim size, tire size, and cold tire inflation…
- Service campaignJun 2024· Other or unspecified· model years 2024
Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain MY 2022-2025 GLE/GLS (167 platform), EQB (243 platform), GLA (247 platform), EQE (294 platform), EQS (296 platform), and GLC (254 platform) vehicles, the B-pillar certification label…
- Service campaignMay 2024· Wheels· model years 2023–2024
Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain MY 2023-2024 C-Class, CLE, E-Class, EQE, EQS, GLC, GLE, GLS, GT, S-Class, and SL vehicles (205, 206, 236, 213, 214, 238, 294, 295, 296, 297, 253, 167, 290, 223, 232 platform), the tire…
- Service campaignApr 2024· Electrical system· model years 2019–2024
This is to notify you of the Service Campaign OTA update for the MBUX system software in 750,313 Model Year (MY) MY19-24 A-Class, CLA, CLS, E-Class, EQB, GLA, GLB, GLC, GLE, GLS, GT 4-door (177, 118, 257, 213, 238, 243, 247, 253,167, 290 platform) vehicles.
- Service campaignMar 2024· Electrical system· model years 2024
Mercedes-Benz AG, the manufacturer of Mercedes-Benz, has determined that on certain MY 2024 C-Class, GLC, and S-Class (206, 223, 254 platform) vehicles, the electronic ignition lock control unit software does not meet current production specifications.
- Service campaignFeb 2024· Electrical system· model years 2021–2024
Mercedes-Benz AG (âÃÂÃÂMBAGâÃÂÃÂ), the manufacturer of Mercedes-Benz vehicles, has determined that on certain MY 21-24 C-Class, EQE, EQS, GLC, GLE, GLS, S-Class, SL (206, 294, 295, 296, 297, 254, 167, 223, 232 platform) vehicles, the MBUX System software does not…
- Service campaignFeb 2024· Electrical system· model years 2020–2023
Mercedes-Benz AG (âÃÂÃÂMBAGâÃÂÃÂ), the manufacturer of Mercedes-Benz vehicles, has determined that on certain MY20-23 A-Class, C-Class, CLA, CLS, E-Class, GLA, GLB, GLC, GLE, GLS, AMG GT, S-Class (177, 205, 118, 257, 213, 238, 247, 253, 167, 290, 217, 222 platform)…
- Service campaignJan 2024· Electrical system· model years 2019–2024
Mercedes-Benz AG (âÂÂMBAGâÂÂ), the manufacturer of Mercedes-Benz vehicles, has determined that on certain MY 2019-2023 A-Class, CLA, E-Class, G-Class, GLA, GLB, GLC, GLE, GLS, and S-Class (177, 118, 238, 463, 247, 253, 167, and 222 platform) vehicles, the communication…
Manufacturer reference NCU-OTA Comm Mod: quote it to a dealer to check whether a car is covered.
- Service campaignJan 2024· Electrical system· model years 2017–2021
Mercedes-Benz AG (âÂÂMBAGâÂÂ), the manufacturer of Mercedes-Benz, has determined that in certain MY 2017-2021 C-Class, CLA, CLS, E-Class, GLC, GLE, GLS, AMG GT, S-Class, SL, and SLC (205, 117, 257, 213/238, 253, 166/292, 190/290,217/222, 231, 172) vehicles, the software of…
- Service campaignDec 2023· Body and structure· model years 2023–2024
Mercedes-Benz AG (âÂÂMBAGâÂÂ), the manufacturer of Mercedes-Benz vehicles, has determined that on certain MY 2023 GLC (254 platform) vehicles, the panoramic sliding sunroof control unit software does not correspond to the latest series production configuration.
- Service campaignDec 2023· Electrical system· model years 2019–2023
Mercedes-Benz AG (âÂÂMBAGâÂÂ), the manufacturer of Mercedes-Benz vehicles, has determined that on certain MY19-23 A-Class, C-Class, CLA, CLS, E-Class, EQB, G-Class, GLA, GLB, GLC, GLE, GLS, AMG GT, S-Class (177, 205, 118, 257, 213, 238, 243, 463, 247, 253, 167, 290, 217,…
Manufacturer reference OTA-Comm Mod SW: quote it to a dealer to check whether a car is covered.
- Service campaignDec 2023· Electrical system· model years 2019–2023
Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain MY19-23 A-Class, CLA, CLS, E-Class, EQB, GLA, GLB, GLC, GLE, GLS, AMG GT (177, 118, 257, 213, 238, 243, 247, 253,167, 290 platform) vehicles, the head unit software does not correspond…
Manufacturer reference OTA-Head Unit SW: quote it to a dealer to check whether a car is covered.
What owners report most
The parts of the car owners named in their complaints, across every GLC-Class model year. Unverified, and not a failure rate.
- Engine231 (29%)
- Electrical system165 (21%)
- Other or unspecified134 (17%)
- Fuel and propulsion69 (9%)
- Transmission and drivetrain55 (7%)
- Brakes38 (5%)
- Airbags35 (4%)
- Steering32 (4%)
Safety recalls
60 recalls cover at least one GLC-Class model year. Each covers a range of VINs, not every car. Check one car at nhtsa.gov/recalls.
Please refer to MBUSA's recall report for specific model information.
The infotainment control unit may reset while the vehicle is in motion and cause the instrument panel display to go blank.
The center rear seat belts may have been installed without the child seat protection function and fail to lock a child restraint properly.
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.
The headlights are missing adjustment prevention caps, which can allow the headlights to be improperly adjusted.
In certain crash scenarios, where the rear occupant's head contacts the C-pillar, the pillar may not absorb an adequate amount of the impact.
An incorrect fuse box that was not designed for the vehicle may have been installed.
A software error may cause the high-voltage starter alternator control unit to fail, causing a loss of drive power.
The bolts that secure the rear axle differential to the rear axle carrier may come loose, which can result in a separation of the drive shaft from the rear axle differential.
The driver's and front passenger seat rail may have been incorrectly attached to the vehicle body.
The integral carrier that supports the engine may fail due to improper welds, which can cause a loss of vehicle control.
Certain dashboard area bolts may have been insufficiently tightened, potentially causing improper air bag deployment or parts separation during a crash.
The 80-Amp fuses may have been manufactured incorrectly, which can cause the fuses to fail.
The headlights may be incorrectly adjusted too high and create a glare for oncoming traffic.
The incorrect screws, installed on the high-pressure fuel pump, may prevent a proper seal from forming between the high-pressure fuel pump and the tandem oil pump.
And 45 more recalls on NHTSA.
NHTSA investigations
Defect investigations NHTSA opened. Many close without a recall.
- DP23003Defect petition· opened Jul 2023, closed May 2024· Transmission and drivetrain· model years 2023
Malfunction Indicator Light / No-Start
- EA21002Engineering analysis· opened Sep 2021, still open· Airbags· model years 2016–2018
Desiccated Air Bag Inflator Rupture
- PE21001Preliminary evaluation· opened Jan 2021, closed Oct 2021· Body and structure· model years 2016–2020
Front Roof Panel Detachment
Led to recall 21V197000.
NHTSA's own page for the 2027 Mercedes-Benz GLC-Class has the complaint text and every document.
Common questions
Is the Mercedes-Benz GLC-Class reliable?
We don't score reliability: NHTSA publishes complaint counts but no sales figures, so complaints can't be turned into a rate or compared between models. What's on file for model years 2015 on: 790 owner complaints, 16 warranty extensions and 29 service campaigns Mercedes-Benz filed, and 60 safety recalls. The model years with the most complaints are 2016 (141), 2017 (116), 2018 (99). Whether a known problem was fixed on one car is what its service records show.
What are the most common problems with the Mercedes-Benz GLC-Class?
Across every model year since 2015, owners' complaints to NHTSA most often name engine (29%), electrical system (21%), other or unspecified (17%). Mercedes-Benz has filed 16 warranty extensions covering the GLC-Class, listed on this page.
Which GLC-Class model years have the most complaints?
2016 (141), 2017 (116), 2018 (99). Complaint counts rise with how many were sold and how long they've been on the road, so compare years of the GLC-Class with each other rather than with other models.
Has Mercedes-Benz extended the warranty on the GLC-Class?
Yes: engine (model years 2018–2026); engine (model years 2019–2023); engine (model years 2016–2018, 2020–2023), and 13 more. A dealer does a covered repair for free within the extended time or mileage.
How do I check recalls on a GLC-Class?
Enter the car's 17-character VIN at nhtsa.gov/recalls. That answers for one vehicle; the 60 recalls listed here are for the model, and each covers only part of it.