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The 2025 GLC is less reliable than other cars from the same model year.
The Reliability score is based on our latest subscriber survey of 2025 Mercedes-Benz GLC owners. The owner comments describe problems respondents experienced with this vehicle.
Infotainment system (audio, GPS, phone), rear entertainment system, backup or other camera/sensors, head-up display.
"At times the radio will not work"
Anonymous, FL (2025 Mercedes-Benz GLC GLC300 2.0-L 4 Cyl turbo)Cruise control, clock, warning lights, body control module, keyless entry, wiper motor or washer, tire pressure monitor, interior or exterior lights, horn, gauges, 12V power plug, USB ports, alarm or security system, remote engine start, heated or cooled seats, heated steering wheel, headlights, automatic headlights, automatic wipers, wireless charging pad.
""The GLC-300 low beam Digital LED headlights cast distracting moving shadows onto the roadway ahead. The shadows are constantly there, at times looking like a running animal; as a result, they make driving at night challenging and difficult. Also, the low beams are aimed too low, with a distinct and dark cut-off across the field of view, which limits roadway illumination, especially on unlit highways. Further, the dark cut-off off is not a smooth line, but is jagged in a stepwise pattern. Altogether, this makes for very unsafe driving conditions especially at highway speeds. These headlight issues were noted from the outset. The vehicle was brought to the dealership multiple times, kept for several weeks in total, with no resolution. I was told that the headlights were working as designed. No repair was offered. Requests to replace the headlights were refused. I attempted contact with Mercedes-Benz USA customer service. Initially I was advised to go to the dealership, despite having done so previously. A completed online survey got me in contact with a communications specialist with no apparent understanding of the gravity of my concerns, and no subsequent follow-up. I had requested contact information for anyone in engineering or automotive design who could provide an explanation, or had an interest in these problems. These requests were denied/ignored. These problems persist at this time, with no apparent manufacturer interest in their resolution. The internet identifies many similar complaints.""
Anonymous, NY (2025 Mercedes-Benz GLC GLC300 2.0-L 4 Cyl turbo)"Received multiple dashboard alerts regarding Tire Pressure Monitor Inoperative/ Tire Pressure Sensors Missing . Under-dash module replaced at dealership."
Anonymous, NY (2025 Mercedes-Benz GLC GLC300 2.0-L 4 Cyl turbo)Muffler, pipes, catalytic converter, exhaust manifold, heat shields, leaks.
"sunroof and sun shade would not work"
Anonymous, MD (2025 Mercedes-Benz GLC GLC300 2.0-L 4 Cyl turbo)Engine rebuild or replacement, cylinder head, head gasket, turbocharger or supercharger, timing chain or belt.
Sensors (O₂, or oxygen, sensor), emission-control devices (includes EGR), fuel-injection system, fuel gauge/sender, fuel pump, problems filling up the tank.
Driveshaft or axle, CV joint, differential, transfer case, four-wheel-drive/all-wheel-drive components, driveline vibration, electrical failure, traction control, electronic stability control.
Premature pad/rotor wear, pulsation or vibration, antilock system, parking brake, master cylinder, calipers, squeaking, brake failure, regenerative braking.
Shocks or struts, ball joints, tie rods, wheel bearings, alignment, steering linkage (includes rack and pinion), power steering (pumps and hoses, leaks), wheel balance, springs or torsion bars, bushings, electronic or air suspension.
Alternator, starter, hybrid battery replacement, hybrid battery related systems, regular battery, battery cables, engine harness, coil, ignition switch, electronic ignition, spark plugs and wires failure, auto stop/start.
Transmission rebuild or replacement, torque converter, premature clutch replacement.
Windows, locks and latches, doors or sliding doors, tailgate, trunk or hatch, mirrors, seat controls (power or manual), seat belts, sunroof, convertible top, glass defect.
Gear selector and linkage, transmission computer, transmission sensor or solenoid, clutch adjustment, rough shifting, slipping transmission, leaks.
Squeaks, rattles, wind noises, seals and/or weather stripping, air and water leaks.
Accessory belts and pulleys, engine computer, engine mounts, engine knock or ping, fuel leaks, oil leaks.
Paint (fading, chalking, peeling, or cracking), loose interior or exterior trim or moldings, rust.
Radiator, cooling fan, water pump, thermostat, antifreeze leaks, overheating.
AC compressor, blower (fan) motor, condenser, evaporator, heater system, automatic climate system, electrical failure, refrigerant leakage.
""While on a trip to Death Valley in April 2025, outside temp was 80 degrees. Display screen got very hot and screen froze. Could not even get it to turn off. Had to direct cool air toward the screen and turn the car off and on numerous times before it would work again.""
Anonymous, CA (2025 Mercedes-Benz GLC GLC300 2.0-L 4 Cyl turbo)