There are 0 US recalls for the 2021 Mercedes-Benz GLS-Class, and 14 in Canada.
Check by VIN to confirm the exact model and see every recall for it.
Recalls are issued for a make, model and model year. Whether the repair has already been done on one specific car is known only to its manufacturer and dealers. Check your vehicle's official status at nhtsa.gov/recalls or with a dealer.
No US recalls found for the 2021 Mercedes-Benz GLS-Class.
Issue: On certain vehicles, the bolt for the 48 V ground connection under the passenger seat may not have been tightened properly. As a result, the wiring could overheat and melt. Safety Risk: Wiring that overheats and melts can create the risk of a fire. Corrective Actions: Mercedes-Benz will notify owners by mail and advise you to take your vehicle to a dealership to inspect and, if necessary, tighten the ground connection.
Issue: Under certain conditions, a software problem could cause the engine to stall during a downshift. As a result, there could be a sudden loss of power to the wheels. Note: This recall only affects vehicles equipped with a V6 engine and a 9-speed automatic transmission. Safety Risk: A sudden loss of power to the wheels could increase the risk of a crash. Corrective Actions: Mercedes-Benz will notify owners by mail and advise you to take your vehicle to a dealership to update the transmission control unit software.
Issue: On certain vehicles, the fuel delivery module could fail. If this happens, the engine may run rough or may not start. This could also result in a sudden loss of engine power while driving. Note: This is an expansion of Transport Canada recall 2023-353. Safety Risk: A sudden loss of engine power could increase the risk of a crash. Corrective Actions: Mercedes-Benz will notify owners by mail and advise you to take your vehicle to a dealership to replace the fuel delivery module.
Issue: On certain vehicles, the fuel delivery module could fail. If this happens, the engine may run rough or may not start. This could also result in a sudden loss of engine power while driving. Safety Risk: A sudden loss of engine power could increase the risk of a crash. Corrective Actions: Mercedes-Benz will notify owners by mail and advise you to take your vehicle to a dealership to replace the fuel delivery module.
Issue: On certain vehicles, the air conditioning drain hose might be installed incorrectly. This could allow water to leak inside the vehicle. If this happens, electrical components could short circuit. This could affect different parts, such as the door locks and emergency call (eCall) system. It could also result in reduced engine power or cause the vehicle not to start. Note: If this issue is present in your vehicle, you might notice wet carpets in the driver or passenger footwell and fogged windows. This is an expansion of Transport Canada Recall 2021-247. Safety Risk: A loss of engine power could increase the risk of a crash. If the doors cannot be unlocked in an emergency situation, it may be difficult to exit the vehicle. Corrective Actions: Mercedes-Benz will notify owners by mail and instruct you to take your vehicle to a dealership to inspect how the air conditioning hose is installed and correct it, if necessary. Mercedes-Benz recommends that you should not use the air conditioning until the vehicle is inspected.
Issue: On certain vehicles, the springs that lock the backrest for the third-row seat may not have been installed correctly. As a result, the seat backrest may not fully lock in place. Safety Risk: A seat backrest that isn't locked could move in a crash and increase the risk of injury. Corrective Actions: Mercedes-Benz will notify owners by mail and instruct you to take your vehicle to a dealership to inspect the third-row seat, and replace the backrest if necessary. To reduce the safety risk, Mercedes-Benz recommends that you should not transport any passengers in the third-row seat until the recall repairs have been completed.
Issue: On certain vehicles, the window trim on the rear doors may not be properly attached. As a result, the window trim could loosen and separate from the vehicle. Safety Risk: Window trim that detaches from the vehicle could create a road hazard for others and increase the risk of a crash. Corrective Actions: Mercedes-Benz will notify owners by mail and instruct you to take your vehicle to a dealership to inspect the window trim on the rear doors and repair them, if necessary.
Issue: On certain vehicles equipped with Michelin Primacy Tour A/S tires, the maximum tire pressure listed on the sidewall of the tire is lower than the maximum tire pressure specified on the tire loading and information label and on the gas tank cap. The placard lists a maximum pressure of 320 kPa (47 psi) instead of 300 kPa (44 psi). Canadian regulations require this information to be consistent on both the labels and tires. Safety Risk: This error does not affect vehicle safety. Michelin has indicated that the tires can be operated safely up to a maximum pressure of 350 kPa (51 psi). Corrective Actions: This is not a recall. Mercedes-Benz has corrected the tire loading and information label on all new vehicles.
Issue: On certain vehicles equipped with the emergency calling (eCall) system, the SIM card for the communications module could disable itself. If this happens, the eCall system would not work properly when there is a crash or when the SOS button is pressed. Safety Risk: If the eCall system does not work in an emergency situation, there could be a delay in response from emergency services. Corrective Actions: Mercedes-Benz will notify owners by mail and send a wireless over-the-air software update to each vehicle. If the update cannot be completed successfully, you will be notified to schedule an appointment to have the update performed by a dealer.
Issue: On certain vehicles, a ground connection under the front passenger seat may not have been properly tightened. As a result, the connection and wiring could overheat. Safety Risk: A loose or overheated wire connection could create the risk of a fire. Corrective Actions: Mercedes-Benz will notify owners by mail and instruct you to take your vehicle to a dealership to inspect, and if necessary, tighten the ground connection for the 48 V electrical system under the front passenger seat.
Issue: On certain vehicles, a software problem could cause the rearview camera image not to appear on the central display. Canadian regulations require the rearview image to display when the transmission is shifted into reverse gear. Safety Risk: A rearview camera image that does not display could reduce a driver's ability to see behind the vehicle while backing up. This could increase the risk of a crash. Corrective Actions: Mercedes-Benz will notify owners by mail and send a wireless over-the-air software update to each vehicle. If the update cannot be completed successfully, you will be notified to schedule an appointment to have the update performed by a dealer.
Issue: On certain vehicles equipped with the emergency calling (eCall) system, the communications module may temporarily lose power during a crash. If this happens, the wrong vehicle location may be transmitted through the eCall system. This could cause emergency responders to be sent to the wrong location. Safety Risk: If the eCall system sends out the wrong location after a crash, there could be a delay in response from emergency services. Corrective Actions: Mercedes-Benz will notify owners by mail and send a wireless over-the-air update to each vehicle. If the update cannot be completed successfully, you will be notified to schedule an appointment to have the update performed by a dealer.
Issue: On certain vehicles, a software problem could cause the rearview camera image not to appear on the central display. Canadian regulations require the rearview image to display when the transmission is shifted into reverse gear. Safety Risk: A rearview camera image that does not display could reduce a driver's ability to see behind the vehicle while backing up. This could increase the risk of a crash. Corrective Actions: Mercedes-Benz will notify owners by mail and instruct you to take your vehicle to a dealer to update the head unit software.
Issue: On certain vehicles, the seat belt buckle for the second-row middle seat may be pushed into the gap between the vehicle body and the seat cushion. If this happens, the seat occupant would not be able to latch the seat belt. Safety Risk: Being unable to latch your seat belt can increase the risk of injury in a crash. Corrective Actions: Mercedes-Benz will notify owners by mail and instruct you to take your vehicle to a dealer to adjust the positioning of the second-row middle seat belt buckle. Note: Passengers should hold the seat belt buckle with one hand when fastening the seat belt.
No owner complaints found for the 2021 Mercedes-Benz GLS-Class.
NHTSA 5-Star Safety Ratings for the 2021 Mercedes-Benz GLS-Class.
| Version | Overall | Frontal | Side | Rollover |
|---|---|---|---|---|
| 2021 Mercedes-Benz GLS-Class SUV 4WD | – | – | – | – |
EPA ratings for each 2021 Mercedes-Benz GLS-Class version.
| Version | City MPG | Highway MPG | Combined | Yearly fuel cost |
|---|---|---|---|---|
| AMG GLS63 4matic Plus 4.0 L Automatic 9-spd | 14 | 18 | 16 | $5,150 |
| GLS450 4matic 3.0 L Automatic 9-spd | 20 | 24 | 21 | $3,900 |
| GLS580 4matic 4.0 L Automatic 9-spd | 16 | 21 | 18 | $4,550 |
| GLS600 4matic Maybach 4.0 L Automatic 9-spd | 15 | 19 | 16 | $5,150 |
Sources: NHTSA recalls, complaints and 5-Star Safety Ratings, US EPA fuel economy and Transport Canada's Vehicle Recalls Database (contains information licensed under the Open Government Licence – Canada). Recalls updated 2026-10-29.