2014 Mercedes-Benz Gl450 problems, complaints & recalls
Most-reported problem areas: Engine (4) · Visibility:sun/Moon Roof Assembly (3) · Service Brakes (2)
🧭 Reliability snapshot
Compared against other Mercedes-Benz Gl450 model years — complaint volume vs the model's median year, recalls and severity. How we score →
Safety recalls (3)
Communication 2019-11-01 · campaign 19V787000 · 24,226 vehicles
Defect: Mercedes-Benz USA, LLC. (MBUSA) is recalling certain 2013-2017 vehicles due to a software fault that may cause the date and time for the emergency call system (eCall) to differ from the actual date and time, potentially relaying an inaccurate vehicle location. For a full list of the affected models visit: https://static.nhtsa.gov/odi/rcl/2019/RMISC-19V787-4620.pdf
Risk: An inaccurate vehicle location may delay emergency responders, increasing the risk of injury.
Fix: MBUSA has initiated an Over the Air (OTA) remote update. MBUSA will also notify owners, and dealers will check software for a successful OTA or update the communication module software as needed, free of charge. The recall began December 23, 2019. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2019120008.
Suspension:front 2018-04-27 · campaign 18V272000 · 9,725 vehicles
Defect: Mercedes-Benz USA, LLC. (MBUSA) is recalling certain 2012-2014 ML350 Bluetec 4Matic and ML550 4Matic, 2012-2015 ML63 AMG 4Matic and ML350 4Matic, 2013-2016 GL350 Bluetec 4Matic, GL550 4Matic and GL63 AMG 4Matic, 2017 GLS350d 4Matic, GLS450 4Matic, GLS550 4Matic and GLS63 AMG 4Matic, 2015 ML400 4Matic, 2016 GLE400 4Matic, GLE350 4Matic, GLE63 AMG 4Matic, GLE63S AMG 4Matic, GLE450 4Matic Coupe and GLE63S AMG 4Matic Coupe, 2015-2016 GL450 4Matic and 2013-2014 GL450 4Matic vehicles equipped with the
Risk: The leaking oil in the presence of an ignition source can increase the risk of a fire.
Fix: MBUSA will notify owners, and dealers will correct the oil level as necessary and replace the reservoir sealing cap to prevent oil foam from leaking out, free of charge. The recall began August 30, 2018. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2018070015.
Child Seat:latch Strap 2014-03-31 · campaign 14V158000 · 69 vehicles
Defect: Mercedes Benz USA, LLC (Mercedes) is recalling certain model year 2014 GL350 BlueTEC 4Matic, GL450 4Matic, GL550 4Matic, and GL63 AMG vehicles manufactured November 4, 2013, through November 15, 2013. In the affected vehicles, the foldable second row seat bottom may not fold down low enough to allow proper use of the child seat achors. As such, these vehicles do not conform to Federal Motor Vehicle Safety Standard (FMVSS) number 225, "Child Restraint Anchorage Systems."
Risk: Without the use of the lower anchor points, a child restraint may be insufficiently or improperly anchored to the seat, increasing the risk of injury to the child in the event of a crash.
Fix: Mercedes will notify owners, and dealers will inspect and, if necessary, replace the seat pan of the second row seat, free of charge. The recall began on May 2, 2014. Owners may contact Mercedes at 1-800-367-6372.
Service bulletins (82)
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.
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
Structure:body 2026-09-14 · LI82.62-P-078631 · Service Bulletin/Repair Instructions
complaint clanking noise from the area of the speakers in the doors. cause under analysis. remedy to narrow down the cause, first of all remove the door trim. • if the noise continues to occur even with the door trim removed, then continue the diagnosis working towards the speaker and if necessary,
Steering 2026-08-28 · LI46.35-P-067339 · Service Bulletin/Repair Instructions
complaint during part of the steering movement, it feels heavier or more difficult to steer in the same spot every time. or rattling, humming, dry sliding/gravel noise from the electric steering system when steering (see attachment). complaint does not impact the ability to safely steer or control
Electrical System 2026-08-06 · LI82.85-P-079087 · Service Bulletin/Repair Instructions
complaint a popup is seen on the hu with the message "data connection temporarily not available". potentially affected functionalities in ntg4.5, ntg5 1.weather 2.local search 3.ip radio 4.send2car 5.speech detection service 6.navigation 7.iheartradio 8.traffic cams cause mb apps is sundowned for al
Structure:body 2026-08-06 · LI82.62-P-078631 · Service Bulletin/Repair Instructions
complaint clanking noise from the area of the speakers in the doors. cause under analysis. remedy to narrow down the cause, first of all remove the door trim. • if the noise continues to occur even with the door trim removed, then continue the diagnosis working towards the speaker and if necessary,
Power Train 2026-07-14 · LI35.30-P-058566 · Service Bulletin/Repair Instructions
single throttle lift-off clunking noise from the side shaft when moving off (audible at the outboard end). the noise is heard once in each instance when changing direction of travel. note: sound file in attachment cause if the complaint is eliminated by experimentally loosening the outboard collar n
Showing the 6 most recent of 82 bulletins. Search all of them free at nhtsa.gov.
What owners report
2025-04-13 · Engine“there were numerous engine oil leak recalls by mercedes-benz. there was a recent recalls announced in 2023, however, my vehicle 2014 gl450 with now about 50k miles, was not included in the list. since there have been engine oil leaks problem reported and recalls, i'd like to report my car engine oil leaks problem too. it seems that the engine oil l…”
2025-01-05 · Engine“on this engine 166 model, i experience noise when idling and when driving, coming from engine with no code to indicate what is the problem of the car. this create the heat of the engine to go up than normal and make the fan to run at high speed. when i call dealer, they told me its common problem on these engine 166, and i need new engine. i wante…”
2024-12-04 · Service Brakes“there is a recall on some of the make & models of my truck with different years but, my truck has been having the same issue & i believe that myself & my family may be at risk. the recall states that if the oil level in the acs reservoir is below the minimum level, the oil may foam & leak out of the vent holes in the reservoir cap. the leaking of o…”
2024-05-23 · Engine · 108,000 mi“the contact owns a 2014 mercedes-benz gl450. the contact stated that while driving 65 mph, the vehicle stalled. the check engine warning light was illuminated. the vehicle was able to be driven to the residence. the vehicle was towed to the dealer, where it was diagnosed and determined that the engine needed to be replaced. the vehicle was then tow…”
2024-02-19 · Lane Departure: Warning“it has makes sound noise and timing chain tension is made very poor not safety , also warming blibd spot frozen not working, display electric poor damage byself tomve fix timing dealer wants 15,000$ to be fix more then value of the suv…”
2023-12-20 · Engine“car got a check engine for failed turbochargers at 71000 miles. mercedes refused to acknowledge and get the problem addressed.…”
2023-06-19 · Electrical System“our vehicles computerized self-diagnostic system (obd) registered faults. …”
2023-02-23 · Wheels“front drivers side (front left) aluminum wheel rim is cracked and will not hold tire pressure. we loose about 10 psi per day because of it. now we have to replace this rim at significant cost. however, that's not the main issue. the main issue is whether this is a manufacturing defect that has put our lives at risk since 2014 (bought it brand n…”
2022-03-23 · Unknown Or Other“oil leaking and wicking into camshaft position sensors, camshaft magnets, o2 sensors, engine wiring harness and ultimately, the ecu is destroying all electronic components connected to the engine causing misfiring and seizing. the issue is quite prevalent via internet research as potentially thousands of owners all experience the same issue. our lo…”
2022-03-23 · Visibility:sun/Moon Roof Assembly“after picking up children from school, i was driving out of the parking lot down a slow-speed arterial road (35 mph posted speed limit). roughly 30 seconds after reaching the posted speed limit we heard a loud bang (like a gunshot) and immediately pulled over. the middle section of the panoramic sunroof had shattered. upon examination on the side o…”
Excerpts of consumer complaints filed with NHTSA, lightly truncated. They are owner statements, not verified findings.