2024 Mercedes-Benz Glc 300 problems, complaints & recalls
Most-reported problem areas: Service Brakes (3) · Power Train (3) · Engine (3)
🧭 Reliability snapshot
Compared against other Mercedes-Benz Glc 300 model years — complaint volume vs the model's median year, recalls and severity. How we score →
Safety recalls (8)
Latches/Locks/Linkages:doors:lock 2026-07-24 · campaign 26V481000 · 310,667 vehicles
Defect: 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.
Fix: Dealers will replace the driver's door lock, free of charge. Owner notification letters are expected to be mailed September 18, 2026. This will be a phased campaign, with the remedy becoming available in different phases based on model and model years. 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.
Steering:critical Fasteners 2025-08-20 · campaign 25V533000 · 3,749 vehicles
Defect: 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.
Fix: 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.
Structure:body:roof And Pillars 2025-06-06 · campaign 25V379000 · 92,851 vehicles
Defect: Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2023-2025 GLC 300, GLC 300 4MATIC, 2024-2025 AMG GLC 43 4MATIC, 2025 GLC 350E 4MATIC, and AMG GLC 63 S E vehicles equipped with a panoramic sunroof. 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. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 201, "Occupant Protection in Interior Im
Risk: In the event of a crash, insufficient impact protection can increase the risk of injury.
Fix: Dealers will modify the roof lining and C-pillar trim, free of charge. Owner notification letters were mailed July 9, 2025. Owners may contact MBUSA customer service at 1-800-367-6372.
Electrical System:wiring:fuses And Circuit Breakers 2025-05-12 · campaign 25V255000 · 443 vehicles
Defect: Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2023-2024 C-Class, E-Class, S-Class, SL, GLC, EQE SUV, EQE, EQS SUV, and EQS vehicles that were incorrectly repaired under recall 24V-115. An incorrect fuse box that was not designed for the vehicle may have been installed.
Risk: An incorrect fuse box can result in a sudden loss of drive power or a loss of critical safety functions such as the restraint systems or instrument cluster, increasing the risk of a crash or injury. Additionally, there could be an increased risk of a fire.
Fix: Dealers will inspect and replace the main fuse boxes, free of charge. Owner notification letters were mailed June 6, 2025. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2025050003/4.
Power Train:driveline:differential Unit 2024-11-15 · campaign 24V862000 · 3 vehicles
Defect: Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2024 GLC 300 4MATIC, and S 580 4MATIC vehicles. 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.
Risk: Driveshaft separation can cause a loss of drive power, increasing the risk of a crash.
Fix: Dealers will repair the rear axle differential bolt connection as necessary, free of charge. Owner notification letters were mailed January 10, 2025. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2024120005.
Structure:frame And Members 2024-09-09 · campaign 24V658000 · 4 vehicles
Defect: Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2024 GLC 300 and AMG GLC 43 vehicles. The integral carrier that supports the engine may fail due to improper welds, which can cause a loss of vehicle control.
Risk: A loss of vehicle control increases the risk of a crash.
Fix: Dealers will replace the integral carrier, free of charge. Owner notification letters were mailed October 11, 2024. Owners may contact MBUSA customer service at 1-877-496-3691. MBUSA's number for this recall is 2024090013.
Electrical System:wiring:fuses And Circuit Breakers 2024-02-16 · campaign 24V115000 · 31,848 vehicles
Defect: Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2023-2024 C300, AMG C43, S580e, S580, Maybach S580, Maybach S680, AMG SL43, AMGSL63, GLC300, EQE350, EQE500, EQS450, EQS580, AMG EQS, 2023 S500, AMG SL55, AMG EQE, 2024 E350, E450, AMG C63e S, CLE300 Coupe, CLE450 Coupe, and GLC300 Coupe vehicles. The 80-Amp fuses may have been manufactured incorrectly, which can cause the fuses to fail.
Risk: An 80-Amp fuse that fails can result in a sudden loss of drive power or a loss of critical safety functions such as the restraint systems or instrument cluster, increasing the risk of a crash or injury. Additionally, there could be an increased risk of a fire.
Fix: Dealers will replace the main fuse boxes, free of charge. Owner notification letters were mailed April 5, 2024. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2024030008.
Structure 2023-11-03 · campaign 23V741000 · 7 vehicles
Defect: Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2024 GLC 300 vehicles. The front, rear, and fixed side windows may not be properly secured and can detach. In addition, the front air bags may not be properly supported by the windshield during deployment.
Risk: Detached windows may cause a road hazard and increase the risk of a crash or injury. Improperly supported air bags can increase the risk of injury during a crash.
Fix: Dealers will inspect and replace the front, rear, and fixed side windows, as necessary, free of charge. Owner notification letters were mailed December 15, 2024. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2023110003.
Service bulletins (286)
Technical service bulletins are repair instructions manufacturers send dealers for known issues. Unlike recalls, the fix is not automatically free — but naming the bulletin at the service desk can save diagnosis time and support goodwill repairs.
Steering 2026-09-26 · LI46.10-P-080896 · Service Bulletin/Repair Instructions
complaint slight creaking noises when steering. cause noises may come from one or more sleeves of the horn contact plate. remedy remove the horn contact plate and check the sleeves for noise; see attached video. if necessary, apply lubricant to the sleeves.
Electrical System 2026-09-25 · OTA-Comm. Mod. SW. Update · Over The Air
a software update will be performed that provides enhancements to the robustness and system stability of the communication module. the update is free of charge and runs in the background, which takes about 8 minutes to install. during this time, the vehicle can be driven without any restrictions, an
Visibility/Wiper 2026-09-25 · LI83.90-P-080935 · Service Bulletin/Repair Instructions
complaint cel illuminates and/or ac does not blow cold. cause potentially relevance to hardware and/or software remedy scenario 1: 1. if the ac does not blow cold air, replace compressor (if compressor's index and part number figure 1 match against table 1). a. if the compressor does not fall within
Service Brakes 2026-09-22 · LI42.10-P-078779 · Service Bulletin/Repair Instructions
complaint repeat workshop visit for vehicle vibration while braking from 60mph. note: although the symptom is similar to a tire or wheel vibration, it is usually readily noticeable that it is distinctly different if it happens at all times or only while braking. cause although the cause of the vibra
Electrical System 2026-09-17 · LI54.30-P-080963 · Service Bulletin/Repair Instructions
complaint issue after ota update ic odometer reading blank("_ _ _ _") ic maintanence data unavailable cause ota update e61.0 remedy in the ic control unit log, please check the following information: verify whether dtcs b228229, b228287, and b226656 are present in either a or a+s. verify that status
Electrical System 2026-09-15 · LI82.60-P-080383 · Service Bulletin/Repair Instructions
complaint radio station cover art does not refresh when switching stations. the ui continues to show the old station’s artwork instead of updating to the new one. cause when a new station change request is triggered, a temporary glitch is causing the head unit application to fail to overwrite the pr
Showing the 6 most recent of 286 bulletins. Search all of them free at nhtsa.gov.
What owners report
2026-06-03 · Engine“while driving the vehicle the engine started running rough, check engine light illuminated and it would not accelerate above 40 mph. there are 29,100 miles on the vehicle, it's been serviced on schedule by mercedes and is owned by me since new. it is especially concerning due to the acceleration topic which could have been catastrophic if i were…”
2026-05-27 · Power Train“while driving my 2024 mercedes-benz glc 300 on california highways, the vehicle has repeatedly experienced sudden uncontrolled deceleration, unexpected transmission downshifts into 2nd gear, severe transmission jerking, and complete loss of accelerator response. the first major incident occurred on march 7, 2025, while traveling on interstate 5 at…”
2026-04-10 · Service Brakes“3/31/26 2pm after highway driving - 3 miles/35 mph tried to brake- immediately something was wrong with the brake as and it felt spongy/mushy/unresponsive. car did not slow until i pressed the brake fully to the floor. the car did stop &was alarmingly unresponsive. around this time,noticed the white brake light illuminated. continued to drive - te…”
2025-08-02 · Vehicle Speed Control“•incident details: •both sudden shutdown incidents •“12v battery” warning (first incident) •“stop - switch off vehicle” warning (second incident) •that it happened with children in the car on a tollway safety concerns: •loss of power steering/braking •risk of collision •repeated failures on a 1-year-old vehicle…”
2025-03-07 · Power Train“i am writing to report a critical safety issue with my 2024 mercedes-benz glc300, vin: [xxx] , which i purchased on [xxx], from mercedes-benz of walnut creek, ca, with 9,500 miles. on [xxx], while driving on [xxx], the vehicle suddenly lost power, the transmission downshifted to 2nd gear, and the accelerator became unresponsive. i was forced to dr…”
2025-02-27 · Forward Collision Avoidance: Automatic Emergency Braking“i am experiencing auto braking when there are no obstructions near or around the vehicle. the auto braking is random but occurs fairly often. it is very unsettling and makes me very nervous while driving my brand new vehicle. this happens without warning and can definitely put myself and my passengers as well as passengers in the vehicles around m…”
2024-12-09 · Unknown Or Other“attention assist system suspended notification comes on randomly on vehicle while driving, rendering driver defenseless with regard to safety warnings that would otherwise be in effect, such as blind spot assist, attention assist, which are vital components for safe driving. this has happened on numerous occasions, most recently on 12/06/2024 whil…”
2024-11-14 · Power Train“when stopped at a light or stop sign, vehicle will jerk forward as if hit from behind. very surprising and dangerous. very intermittent. the has happened many times. vehicle will at times have rough downshifts. ie. overdrive (9th) to (8th) gear. also intermittent. this has happened multiple times. vehicle was taken to the dealer twice for …”
2024-11-13 · Forward Collision Avoidance: Automatic Emergency Braking“the reverse sensors are faulty, causing the glc300 model to randomly auto-brake while going in reverse. my driveway is flat and long with no significant grade changes and this has occurred at another location as well with similar topography. there are no obstructions present nor any significant grade changes, the vehicle auto-brakes not everytime, …”
2024-09-06 · Seat Belts“passenger backseat seatbelt would not release under any circumstance. i tried turning the car off and on again. checking settings on the screen and even releasing the seat a bit. pushing the red button on the buckle did nothing. pulling did nothing. eventually had to cut the seatbelt to get the passenger out. and it is still stuck in the buckle. …”
Excerpts of consumer complaints filed with NHTSA, lightly truncated. They are owner statements, not verified findings.