2019 Mercedes-Benz Gls450 Problems, Recalls & Reliability
Verdict
GoodComplaint Index
40/100
#4 most-complained of 6 Gls450 years
Based on NHTSA complaints per model-year, not a reliability rating. Methodology
The 2019 Mercedes-Benz Gls450 has a Complaint Index of 40, ranking 4th worst out of 6 model years, with a 'Good' verdict. It has 24 complaints, 3 recalls, and a median failure mileage of 31,415 miles.
- Complaints
- 24
- Recalls
- 3
- Crashes / fires
- 1 / 1
- Injuries / deaths
- 2 / 0
- NHTSA overall rating
- Not rated
- EPA combined MPG
- 18
- 16 city / 22 hwy
Top 2019 Mercedes-Benz Gls450 problems
NHTSA owner complaints by component group. Groups with 15+ complaints have their own page.
- Engine7 (29%)
- Other6 (25%)
- Electrical System3 (13%)
- Suspension, Wheels & Tires3 (13%)
- Transmission & Powertrain3 (13%)
- Airbags2 (8%)
- Brakes2 (8%)
- Collision Avoidance & Cameras2 (8%)
- Structure & Body2 (8%)
- Fuel System1 (4%)
What owners report
- Engine can lose power on the highway after dashboard warnings for engine malfunction and 48V battery, followed by a coolant shutdown message.
- Some vehicles began smoking and caught fire while driving, with no warning lights on beforehand.
- Check engine light comes on with a code pointing to the oil pump solenoid, accompanied by jerking and hesitation during acceleration.
- Airbags failed to deploy during a low-speed crash, resulting in head injuries to the driver and front passenger.
- Front and rear tires on one side leak air from the inner sidewall and the issue recurs after replacement.
- Parking brake assist engages unexpectedly while driving, causing a burning smell and damage to brake pads and calipers.
2019 Mercedes-Benz Gls450 recalls
3 NHTSA recall campaigns list this model year.
- NHTSA 24V207000Mar 15, 2024Electrical System116,020 vehicles
Electrical system:wiring
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2023-2024 GLE 350, 2020-2024 GLE 450, 2020-2023 GLS 580, GLE 580, 2019-2023 GLS 450, 2021-2023 Maybach GLS 600, AMG GLS 63, 2021-2024 AMG GLE 53, AMG GLE 53 Coupe, and AMG GLE 63 S vehicles. A 48-Volt ground connection under the passenger seat may not be secured properly, resulting in the ground connection overheating.
Risk: An overheated ground connection can increase the risk of a fire.
Remedy: Dealers will inspect and tighten the 48-Volt ground connection as necessary, free of charge. Owner notification letters were mailed on May 3, 2024. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2024040002.
- NHTSA 22V365000May 20, 2022Electrical System242,722 vehiclesOver-the-air fix
Electrical system:software
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.
Risk: 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.
- NHTSA 21V058000Feb 5, 2021Other1,292,258 vehiclesOver-the-air fix
Communication: auto crash notification
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.
Risk: 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.
2019 Mercedes-Benz Gls450 fuel economy and fuel cost
- City
- 16 MPG
- Highway
- 22 MPG
- Combined
- 18 MPG
- Annual fuel cost (EPA)
- $4,450
- 15,000 mi/yr
- Fuel
- Premium
- Current regular gas
- $4.32/gal
- national avg.
EPA figures; median across configurations of this model year. Estimate your own cost with the fuel cost calculator.
2019 compared with other Gls450 years
Frequently asked questions
- Is the 2019 Mercedes-Benz Gls450 reliable?
- Based on NHTSA owner complaints and recalls, the 2019 Gls450 ranks 4th worst out of 6 model years with a Complaint Index of 40 and a 'Good' verdict relative to other years.
- What are the most common problems with the 2019 Mercedes-Benz Gls450?
- The top problem area is the Engine, accounting for 29% of complaints (7 of 24), with a median failure mileage of 34,708. Electrical System, Suspension, and Transmission & Powertrain each account for 13% of complaints.
- Does the 2019 Mercedes-Benz Gls450 have any recalls?
- NHTSA lists 3 recalls for the 2019 Gls450, covering the Electrical System (twice) and one 'Other' category, none of which are do-not-drive recalls.
- How does the 2019 Gls450 compare to other model years?
- The 2019 model's Complaint Index of 40 is lower than 2020 (100, Avoid) and 2021 (80, Avoid), but higher than 2018 (20, Best).