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We expect the 2025 GLC to be less reliable than other new cars. This prediction is based on the Mercedes-Benz brand score.
The Reliability score is based on our latest subscriber survey of 2021 Mercedes-Benz GLC owners. The owner comments describe problems respondents experienced with this vehicle.
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.
"Both rear shock absorbers and rear swaybars were replaced at 28,000 miles"
Anonymous, NJ (2021 Mercedes-Benz GLC GLC300 2.0-L 4 Cyl turbo)Premature pad/rotor wear, pulsation or vibration, antilock system, parking brake, master cylinder, calipers, squeaking, brake failure, regenerative braking.
"My previous GLC 300 had no premature break wear....with this one the dealer was telling g me I needed new rear brakes before the suv was just one years old"
Anonymous, ON (2021 Mercedes-Benz GLC GLC300 Unsure)"I leased this in May and in the late fall, when the temp fell to about 32 degress, the brakes would squeak when backing out of our garage. We went to Fl and no problems. When returning the squeakes returned. This only happened the 1st time backing out of the garage. The same thing happened the next year only louder. I tried putting a heat lamp overnight. No help. This last year the noise got much worse. Other than the sqeaking breaks we love the car. Great MPG / range on distance driving"
Anonymous, KY (2021 Mercedes-Benz GLC GLC300 3.0-L V6 turbo)Infotainment system (audio, GPS, phone), rear entertainment system, backup or other camera/sensors, head-up display.
"The adaptive cruise control stopped working and I forgot to ask about it before I dropped it off when my Hermes chip was finally available for them to install (1 year after I bought the car brand new). I asked them about it when I picked it up and the dealership said I don't have that feature or the components/software needed for it. But it was working because I used it all the time. I know it had it! And my car will adjust to the speed limit with a click of a button on the steering wheel and my car has the camera and software that reads the speed limit signs because the speed limit displays in my speedometer area and will blink if I'm going over the speed limit. When they did the chip install and software update, it was also about the time that MERCEDES-BENZ started their program of being able to buy software upgrades for features such as adaptive cruise control. I really think they took that feature away from me when they installed that chip and updated the software."
Anonymous A., IA (2021 Mercedes-Benz GLC GLC300 3.0-L V6 turbo)Engine rebuild or replacement, cylinder head, head gasket, turbocharger or supercharger, timing chain or belt.
Transmission rebuild or replacement, torque converter, premature clutch replacement.
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.
Driveshaft or axle, CV joint, differential, transfer case, four-wheel-drive/all-wheel-drive components, driveline vibration, electrical failure, traction control, electronic stability control.
AC compressor, blower (fan) motor, condenser, evaporator, heater system, automatic climate system, electrical failure, refrigerant leakage.
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.
Squeaks, rattles, wind noises, seals and/or weather stripping, air and water leaks.
Gear selector and linkage, transmission computer, transmission sensor or solenoid, clutch adjustment, rough shifting, slipping transmission, 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.
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.
Muffler, pipes, catalytic converter, exhaust manifold, heat shields, leaks.
Sensors (O₂, or oxygen, sensor), emission-control devices (includes EGR), fuel-injection system, fuel gauge/sender, fuel pump, problems filling up the tank.
"In conjunction with replacing shocks, the sway bars were replaced."
Anonymous, NJ (2021 Mercedes-Benz GLC GLC300 2.0-L 4 Cyl turbo)