Worst 2020 Mercedes-Benz Gls 450 Problems
Top 3 most-reported issues with average mileage at failure.
Electrical Faults
Engine Problems
Fuel System
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All Problems by Category
Every NHTSA complaint category for the 2020 Mercedes-Benz Gls 450.
| Component | Complaints | Crashes | Fires | Avg Mileage | Volume |
|---|---|---|---|---|---|
| Electrical Faults | 16 | — | — | 6,550 mi | |
| Engine Problems | 8 | — | — | 4,200 mi | |
| Fuel System | 5 | — | — | 4,200 mi | |
| Transmission / Drivetrain | 4 | — | — | — | |
| Forward Collision Avoidance: Adaptive Cruise Control | 3 | — | — | — | |
| Forward Collision Avoidance: Automatic Emergency Braking | 3 | 2 | — | — | |
| Forward Collision Avoidance: Warnings | 3 | — | — | — | |
| Brakes | 2 | 1 | — | — | |
| Airbags | 1 | 1 | — | — | |
| Back Over Prevention: Sensing System: Camera | 1 | — | — | — | |
| Back Over Prevention: Warnings | 1 | 1 | — | — | |
| Seat-Related Issues | 1 | — | — | — | |
| Steering Defects | 1 | — | — | — | |
| Suspension Failures | 1 | — | — | — | |
| Unintended Acceleration | 1 | — | — | — | |
| Wipers & Visibility | 1 | — | — | — |
Search Owner Complaints
Read what owners actually reported to NHTSA for the 2020 Mercedes-Benz Gls 450. Type a keyword (e.g. “transmission”, “stalling”, “brakes”) to filter.
Recalls for 2020 Mercedes-Benz Gls 450
7 NHTSA recall campaigns affecting ~745,918 vehicles.
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.
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2020-2023 GLE 450 and GLS 450 vehicles. The transmission may not fully downshift in certain conditions, causing the engine to stall.
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2020-2021 GLE350, GLE450, GLS450, GLS580, 2021 AMG GLE53, AMG GLE63, Maybach GLS600, AMG GLS63, and 2020 GLE580 vehicles. The air conditioner drain hoses may have been incorrectly installed, causing water to drain into the passenger compartment.
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2021 AMG GLS63, 2020-2022 GLS450 and GLS580 vehicles. Due to a manufacturing error, the locks on the third-row seatbacks may fail in the event of a crash.
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2020-2022 GLE350, GLE450, GLS450, 2021-2022 AMG GLE53, 2020-2021 GLE580, GLS580, and 2021 GLE400e, AMG GLS63, AMG GLE63 S, and Maybach GLS600 vehicles. Due to a manufacturing error, the rear door window trim bars may detach.
Mercedes-Benz, LLC (MBUSA) is recalling certain 2020 Mercedes-Benz GLS 450 and GLS 580 vehicles. The front air bag wiring harness may be routed incorrectly, which can cause the air bag not to deploy properly. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 208, "Occupant Crash Protection."
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.
Other Mercedes-Benz Gls 450 Years
2020 Mercedes-Benz Gls 450 — FAQ
Answers based on real NHTSA complaint and recall data for this specific model year.
Is the 2020 Mercedes-Benz Gls 450 reliable?
What are common problems with the 2020 Mercedes-Benz Gls 450?
At what mileage do problems start on the 2020 Mercedes-Benz Gls 450?
How safe is the 2020 Mercedes-Benz Gls 450?
Does the 2020 Mercedes-Benz Gls 450 have any recalls?
Should I buy a 2020 Mercedes-Benz Gls 450?
Source: NHTSA (National Highway Traffic Safety Administration) complaint and recall databases, aggregated by VinItel.
Wider context: See the full Mercedes-Benz Gls 450 reliability report with year-by-year comparison and generation analysis.
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