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The 2021 GLC is less reliable than other cars from the same model year.
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.
Premature pad/rotor wear, pulsation or vibration, antilock system, parking brake, master cylinder, calipers, squeaking, brake failure, regenerative braking.
"As answered previously, when backing out of the garage in clod weather the brakes squeak very loudly"
Anonymous, KY (2021 Mercedes-Benz GLC GLC300 Unsure)"Although garaged, when backing out in cold weather the brakes squeak very loud."
Anonymous, KY (2021 Mercedes-Benz GLC GLC300 3.0-L V6 turbo)Muffler, pipes, catalytic converter, exhaust manifold, heat shields, leaks.
"Engine light fix under certification. No charge but MERCEDES-BENZ had the car for three weeks. Regular 69,000 service not covered. Y warranty nor were tires. Total cost $2200."
Anonymous, CA (2021 Mercedes-Benz GLC GLC43 AMG 4.0-L V8 turbo)"Too hard for me to get in. Im 76 years old and this car is higher than my husbands Highlander"
Anonymous, TN (2021 Mercedes-Benz GLC GLC300 4.0-L V8 turbo)Squeaks, rattles, wind noises, seals and/or weather stripping, air and water leaks.
"Strut replaced"
Anonymous A., OK (2021 Mercedes-Benz GLC GLC43 AMG 3.0-L V6 turbo)Engine rebuild or replacement, cylinder head, head gasket, turbocharger or supercharger, timing chain or belt.
""A small fingernail-sized piece of metal was in the cylinder, and it lost all compression. MERCEDES-BENZ wanted $15,000 to make the repair. A local certified MERCEDES-BENZ shop did it for $7000""
Anonymous, CO (2021 Mercedes-Benz GLC GLC300 2.0-L 4 Cyl turbo)Infotainment system (audio, GPS, phone), rear entertainment system, backup or other camera/sensors, head-up display.
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.
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.
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.
Transmission rebuild or replacement, torque converter, premature clutch replacement.
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.
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.
Sensors (O₂, or oxygen, sensor), emission-control devices (includes EGR), fuel-injection system, fuel gauge/sender, fuel pump, problems filling up the tank.
""Since new, brakes are squeaking when temperature drops below 32F""
Anonymous, WI (2021 Mercedes-Benz GLC GLC300 2.0-L 4 Cyl turbo)