Complaints by model year
| Year | Complaints | vs. typical* | Recalls | Top problem | Verdict |
|---|---|---|---|---|---|
| 2026 | 2 | −33% | 2 | Engine | Few |
| 2025 | 7 | 1.4× | 1 | Brake | Average |
| 2024 | 15 | 1.7× | — | Collision Avoidance | Caution |
| 2023 | 7 | −33% | 5 | Brake | Average |
| 2022 | 16 | −20% | 10 | Electrical | Average |
| 2021 | 31 | 1.6× | 12 | Electrical | Caution |
| 2020 | 36 | 1.9× | 22 | Electrical | Caution |
| 2019 | 24 | typical | 3 | Engine | Average |
| 2018 | 14 | — | 3 | Suspension | Limited data |
| 2017 | 35 | — | 8 | Electrical | Limited data |
* Complaints compared with the median GLS450 year at the same age, so new and old years are judged fairly. How this works.
Most common Mercedes-Benz GLS450 problems
Latest Mercedes-Benz GLS450 recalls
Seat belts › Rear/other › Buckle assembly
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2026 AMG GLS 63 4MATIC+, AMG GLE 63 S 4MATIC+ COUPE, AMG GLE 63 S 4MATIC+, AMG GLE 53 4MATIC+ COUPE, AMG GLE 53 4MATIC+, GLE 450 4MATIC COUPE, GLE 350 4MATIC, Maybach GLS 600 4MATIC, GLS 580 4MATIC, GLS 450 4MATIC, GLE 580 4MATIC, GLE 450E 4MATIC, GLE 450 4MATIC, and GLE 350…
Remedy: Dealers will tighten the rear seat belt bolts and replace any missing bolts, free of charge. Owner notification letters were mailed July 17, 2026. Owners may contact MBUSA customer service at 1-800-367-6372.
Air bags › Passenger side frontal › Cushion
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2026 GLE 350 4MATIC, GLE 450 4MATIC, GLE 350, GLE 580 4MATIC, GLS 580 4MATIC, GLE 450 E 4MATIC, AMG GLE53 4MATIC, AMG GLS63 4MATIC, AMG GLE63 S 4MATIC, GLS 450 4MATIC, and GLS 600 4MATIC vehicles.
Remedy: Dealers will replace the passenger air bag module, free of charge. Owner notification letters were mailed June 12, 2026. Owners may contact MBUSA customer service at 1-800-367-6372.
Visibility › Rearview mirrors/devices › Interior
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2024 GLE 350 4MATIC, 2025 GLE 450e 4MATIC, GLE 450 4MATIC Coupe, GLE 450 4MATIC, GLS 450 4MATIC, Maybach GLS 600 4MATIC, AMG GLE 53 4MATIC, AMG GLE 53 4MATIC Coupe, AMG GLE 63 S 4MATIC Coupe, and AMG GLS 63 4MATIC vehicles.
Remedy: Dealers will replace the windshield and reinstall the multi-purpose camera and rearview mirror, free of charge. Owner notification letters were mailed June 27, 2025.
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.
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.
Power train › Automatic transmission › Control module › Software
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.
Remedy: Dealers will update the transmission control unit software, free of charge. Owner notification letters were mailed March 29, 2024. Owners may contact MBUSA customer service at 1-800-367-6372.
Frequently asked questions
What years of the Mercedes-Benz GLS450 should you avoid?
2020, 2024 and 2021 — these years have the most complaints relative to other GLS450 years at the same age, led by electrical system problems in the 2020.
What is the best year for the Mercedes-Benz GLS450?
2023 has the fewest complaints compared with other GLS450 years at the same age, followed by 2022. Newer years can look better simply because fewer complaints have come in yet, so we compare like with like.
What are the most common Mercedes-Benz GLS450 problems?
Across all years, owners report the most problems with the electrical system (55), engine & cooling (37) and driver assistance (27). Electrical complaints peak in the 2020 model year.
How many recalls has the Mercedes-Benz GLS450 had?
37 recalls across 2017–2026. The model year with the most is 2020. See all Mercedes-Benz GLS450 recalls by year.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.