{"id":"2018_mercedes_benz_gls_class","make":"Mercedes-Benz","make_slug":"mercedes-benz","model":"GLS-Class","model_slug":"gls-class","year":2018,"url":"/mercedes-benz/gls-class/2018/","pts":["gas"],"configs":[{"id":39104,"model":"GLS450 4matic","pt":"gas","drive":"4-Wheel Drive","trany":"Automatic 9-spd","cyl":6,"displ":3.0,"eng":"SIDI","turbo":true,"super":false,"start_stop":true,"city":17,"hwy":22,"comb":19,"cityA":0,"hwyA":0,"combA":0,"kwh100":null,"range":null,"range_city":null,"range_hwy":null,"erange":null,"phev_comb":null,"charge240":null,"charge240b":null,"charger":"","charger_b":"","motor":"","fuel":"Premium","vclass":"Standard Sport Utility Vehicle 4WD","co2":477,"fe_score":3,"ghg_score":3,"fuel_cost":4100,"save_spend":-9250,"guzzler":false,"mfr_code":"MBX","modified":"Mon Feb 12 00:00:00 EST 2018"},{"id":39105,"model":"GLS550 4matic","pt":"gas","drive":"4-Wheel Drive","trany":"Automatic 9-spd","cyl":8,"displ":4.7,"eng":"SIDI","turbo":true,"super":false,"start_stop":true,"city":14,"hwy":19,"comb":16,"cityA":0,"hwyA":0,"combA":0,"kwh100":null,"range":null,"range_city":null,"range_hwy":null,"erange":null,"phev_comb":null,"charge240":null,"charge240b":null,"charger":"","charger_b":"","motor":"","fuel":"Premium","vclass":"Standard Sport Utility Vehicle 4WD","co2":556,"fe_score":2,"ghg_score":2,"fuel_cost":4850,"save_spend":-13000,"guzzler":false,"mfr_code":"MBX","modified":"Mon Feb 12 00:00:00 EST 2018"},{"id":39106,"model":"AMG GLS63","pt":"gas","drive":"4-Wheel Drive","trany":"Automatic 7-spd","cyl":8,"displ":5.5,"eng":"SIDI","turbo":true,"super":false,"start_stop":true,"city":13,"hwy":18,"comb":15,"cityA":0,"hwyA":0,"combA":0,"kwh100":null,"range":null,"range_city":null,"range_hwy":null,"erange":null,"phev_comb":null,"charge240":null,"charge240b":null,"charger":"","charger_b":"","motor":"","fuel":"Premium","vclass":"Standard Sport Utility Vehicle 4WD","co2":591,"fe_score":2,"ghg_score":2,"fuel_cost":5150,"save_spend":-14500,"guzzler":false,"mfr_code":"MBX","modified":"Mon Feb 12 00:00:00 EST 2018"}],"vclass":"Standard Sport Utility Vehicle 4WD","segment":"Midsize / large SUV","epa_certified":true,"recalls":[{"campaign":"22V365000","component":"ELECTRICAL SYSTEM:SOFTWARE","mfr":"Mercedes-Benz USA, LLC","reported":"2022-05-20","owner_notified":"2022-07-08","units":242722,"summary":"Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2017-2022 CLA-Class, GLA-Class, GLE-Class, GLS-Class, SLC-Class, A-Class, AMG GT-Class, C-Class, E-Class, S-Class, SL-Class, GLC-Class, CLS-Class, GLB-Class, and G-Class vehicles.  Please refer to MBUSA's recall report for specific vehicle model details.  An error in the communication module's SIM card software can cause a mobile network connection failure, disabling the emergency call (eCall) system.","consequence":"A disabled eCall system would prevent a vehicle occupant from contacting the emergency services call center in an emergency, potentially delaying emergency responders and increasing the risk of injury.","remedy":"The communication module software will be updated through an Over-the-Air (OTA) update or by a dealer, free of charge.  Owner notification letters were mailed July 8, 2022.  Owner notification letters will be mailed in phases, on July 8, 2022, May 17, 2024, July 29, 2024, and September 27, 2024.  Owners may contact MBUSA customer service at 1-800-367-6372.  MBUSA's numbers are for this recall is 2022060005 and 2023110006.","notes":"Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.","park_outside":false,"do_not_drive":false,"mfr_campaign":"See Recall Schedule","initiated_by":"MFR","variants":[],"severity":"minor"},{"campaign":"21V058000","component":"ELECTRICAL SYSTEM:SOFTWARE","mfr":"Mercedes-Benz USA, LLC","reported":"2021-02-05","owner_notified":"2021-03-12","units":1292258,"summary":"Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2016 - 2021 CLA-Class, GLA-Class, GLE-Class, GLS-Class, SLC-Class, A-Class, GT-Class, C-Class, E-Class, S-Class, CLS-Class, SL-Class, B-Class, GLB-Class, GLC-Class, and G-Class vehicles.  Please refer to the Part 573 report for specific vehicle model details.  The software design of the communication module may fail to communicate the correct vehicle location for the emergency call system (eCall) in the event of a crash.","consequence":"Failure of the eCall system may result in emergency responders being dispatched to the wrong location, increasing the risk of injury following a crash.","remedy":"MBUSA will notify owners, and the communication module software will be updated by a dealer, or through an over-the-air (OTA) update, free of charge.  The recall began March 12, 2021.  Owners may contact MBUSA customer service at 1-877-762-8267.  MBUSA's number for this recall is 2021020025.","notes":"Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.","park_outside":false,"do_not_drive":false,"mfr_campaign":"2021020025","initiated_by":"MFR","variants":[],"severity":"minor"},{"campaign":"18V539000","component":"SERVICE BRAKES, HYDRAULIC","mfr":"Mercedes-Benz USA, LLC.","reported":"2018-08-16","owner_notified":"2018-09-14","units":9044,"summary":"Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2018 Mercedes-Benz GLE350 4Matic, GLE350, GLS450 4Matic, GLS550 4matic, GLE43 AMG 4Matic, GLE63 AMG 4Matic, GLE63S AMG 4Matic, and GLS63 AMG 4Matic vehicles.  The rear brake caliper pistons on these vehicles may not have been correctly coated, causing gas to become temporarily released into the rear brake hydraulic circuit, reducing braking performance.","consequence":"Reduced braking performance can increase the risk of a crash.","remedy":"MBUSA will notify owners, and dealers will bleed the rear axle brake system, free of charge.  The recall began September 14, 2018.  Owners may contact MBUSA customer service at 1-800-367-6372.  MBUSA's number for this recall is 2018080013.","notes":"Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.","park_outside":false,"do_not_drive":false,"mfr_campaign":"2018080013","initiated_by":"MFR","variants":[],"severity":"high"},{"campaign":"17V816000","component":"LATCHES/LOCKS/LINKAGES:DOORS:LATCH","mfr":"Mercedes-Benz USA, LLC.","reported":"2017-12-18","owner_notified":"2018-03-09","units":8700,"summary":"Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2017 GLE400 4Matic, GLE350 4Matic, GLE350, GLE550e 4Matic, GLE43 AMG 4Matic, GLE63 AMG 4Matic, GLS450, GLE63S 4Matic, GLS63 4Matic, S550e, S600, S63 AMG 4Matic, S65 AMG, S550, Mercedes-Maybach S600, Mercedes-Maybach S550 4Matic, GLE43 AMG 4Matic Coupe, GLE63S 4Matic Coupe, 2017-2018 GLS550 4Matic, S550 4Matic, 2018 S450, and S63 AMG 4Matic vehicles.  The rear passenger door on the driver side may indicate that it is locked, when it may not be.  As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 206, \"Door Locks and Door Retention Components.\"","consequence":"If the door appears to be locked, the door may be unintentionally opened, increasing the risk of injury.","remedy":"MBUSA will notify owners, and dealers will inspect the left rear door lock, replacing it as necessary, free of charge.  The recall is expected to begin in January 2018.  Owners may contact MBUSA customer service at 1-877-496-3691.","notes":"Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.","park_outside":false,"do_not_drive":false,"mfr_campaign":"2018010009","initiated_by":"MFR","variants":[],"severity":"moderate"}],"recall_count":4,"critical_count":0,"park_outside":false,"do_not_drive":false,"score":80,"grade":"B","complaints":{"count":22,"crash":1,"fire":3,"injured":0,"deaths":0,"comps":[["Service Brakes",4],["Suspension",3],["Electrical System",3],["Unspecified",3],["Structure",2],["Engine",2]],"by_year":{"2018":6,"2020":3,"2021":4,"2022":2,"2023":1,"2024":1,"2025":4,"2026":1},"excerpts":[["2026-07-06","Suspension","The contact owns a 2018 Mercedes-Benz GLS 550. The contact stated while driving at various speeds, the vehicle made an abnormal clicking sound when making a right turn, and an abnormal ticking sound at startup. There was no warning light illuminated. Another driver informed the contact that the front passenger-side whe\u2026"],["2025-12-05","Engine","January 2023 - Airbag suspension failed. Replaced by Mercedes dealership. December 2024 - Airbag suspension failed. Replaced by Mercedes dealership. April 2024: First brake failure. The brakes stopped while driving. Repaired. April 2025: Second brake failure. Brakes failed again. Repaired. The mechanic stated the line \u2026"],["2025-08-26","Service Brakes","Brake brakes are terrible. They have other years that they\u00e2\u20ac\u2122ve acknowledge that the break are spongy and at times does not break the GLS has that defect. Also smell of gas fumes inside the vehicle. Please direct me the right way and help me with this issue. The brake issue almost have caused me two major accidents car\u2026"]]},"investigations":[],"ncap":[],"popularity":999,"headline":{"range":null,"mpg":19,"ncap":null,"complaints":22},"presskit_trims":[],"generated_at":"2026-09-11 06:27 UTC","sources":["EPA fueleconomy.gov","NHTSA recalls","NHTSA complaints","NHTSA NCAP","NHTSA investigations"]}