The 2023 Mercedes-Benz Glc 300 4matic has 3 NHTSA recall campaigns affecting an estimated 96,727 vehicles. Recall repairs are always free at any authorized dealer. Owners have filed 12 complaints with NHTSA, most often about the unknown or other. Last updated July 5, 2026.
Recall campaigns
STEERING25V5330002025-08-203,749 affected
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.
Consequence
A loose steering coupling can cause a loss of steering control, increasing the risk of a crash.
Remedy
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.
EXTERIOR LIGHTING25V3650002025-06-11127 affected
Defect
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2023 GLC 300 and GLC 300 4MATIC vehicles. The headlights are missing adjustment prevention caps, which can allow the headlights to be improperly adjusted. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number…
Consequence
Improperly adjusted headlights can reduce visibility, increasing the risk of a crash.
Remedy
Dealers will inspect the headlights for sealing caps and install caps as necessary, free of charge. Owner notification letters were mailed July 18, 2025. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2025060005.
STRUCTURE25V3790002025-06-0692,851 affected
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…
Consequence
In the event of a crash, insufficient impact protection can increase the risk of injury.
Remedy
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.
Complaints by component
UNKNOWN OR OTHER
4
2injuries
STRUCTURE:BODY
2
EQUIPMENT:ELECTRICAL:INFOTAINMENT
1
FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL
Verbatim reports filed with NHTSA, lightly edited for readability and with personal
information removed.
“My 2023 glc300 suffered a severe, unprovoked emergency brake deployment in traffic, nearly causing a pileup. On [xxx]. The car has only 14,500 miles and has a chronic history of dangerous, unprovoked active brake assist deployments. It broke down twice in its first month of ownership for other…”
“The issue is regarding the “traffic sign assistâ€� (owner’s manual page 221) feature of the adaptive cruise control system. Vehicle will be made available if requested. The function of the "traffic sign assist" is to monitor roadside "speed limit" signs and the cruise control will increase or…”
“The issue is regarding the “traffic sign assistâ€� (owner’s manual page 221) feature of the adaptive cruise control system. Vehicle will be made available if requested. The function of the "traffic sign assist" is to monitor roadside "speed limit" signs and the cruise control will increase or…”
“The issue is regarding the “traffic sign assistâ€� (owner’s manual page 221) feature of the adaptive cruise control system. Vehicle will be made available if requested. The function of the "traffic sign assist" is to monitor roadside "speed limit" signs and the cruise control will increase or…”
“I purchased a new mercedes benz glc300 2023. Last month, my friend and I were driving on i75 in florida when we heard what sounded like a loud boom or gunshot. We quickly discovered that my sunroof had exploded. The sunroof was closed, and fortunately so was the sunshade, as large pieces of glass…”
“The glass panel between the windshield and the sun roof shattered spontaneously”
“When loading groceries in my trunk, the door randomly closes on my head. The last time this door closed while we were loading, I tried stopping it with my hand, by holding it, so my spouse doesnt get smashed, and it will not stop at all. There needs to be a safety feature installed to stop this…”
“The rear door randomly closes with force unexpectantly. We contacted the mercedes dealer where the car was purchased and is serviced. They responded it can not be fixed and was an ongoing concern of many owners”
Recall, complaint, and investigation records from official NHTSA datasets (FLAT_RCL,
FLAT_CMPL, FLAT_INV), synced weekly. Counts reflect NHTSA records for the 2023 Mercedes-Benz Glc 300 4matic as of
July 5, 2026. Complaint narratives are consumer-submitted and unverified. This page
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