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Data source: National Highway Traffic Safety Administration

  1. Home
  2. >Mercedes-Benz
  3. >GLS-Class
  4. >2020
  5. >Powertrain

2020 Mercedes-Benz GLS-Class Powertrain Problems

Powertrain complaints and recalls from NHTSA

Summary

The 2020 Mercedes-Benz GLS-Class has 3 NHTSA powertrain complaints and 0 powertrain-related recalls.

Problem Areas for the 2020 Mercedes-Benz GLS-Class

Electrical
15Other
6Powertrain
3

3

Complaints

0

Recalls

0

Injuries Reported

Data source: National Highway Traffic Safety Administration (NHTSA) · Last updated April 9, 2026

All Powertrain Complaints

Date ↓ComponentSummary
Mar 21, 2025POWER TRAINOn numerous occasions the transmission does not fully down shift to the next lower gear and then whe...
Sep 21, 2022POWER TRAIN,ELECTRICAL SYSTEM,ENGINEThis incident occurred around 5:50pm on Wednesday, September 21, 2022. I was driving on a merge con...
Apr 27, 2022POWER TRAIN,ENGINE,FUEL/PROPULSION SYSTEMOn numerous occasions, when either slowing down or in a slow turn, the engine dies and will not reen...

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2020 Mercedes-Benz GLS-Class Full Report→All Mercedes-Benz Models→