2021 Mercedes-Benz S-Class Reliability - Consumer Reports
The S-Class has always been the epitome of an ultra luxury sedan. This redesigned flagship sedan continues to deliver a very comfortable ride but the low profile tires mar it. The cabin is super hushed, fit and finish is impeccable, and thrust is effortless. The standard engine is a 3.0-liter inline-six cylinder, and the uplevel choice is a 4.0-liter V8, both turbocharged.
Alerts
There are 5 recalls on this vehicle. Learn More.

Reliability

We expect the 2022 S-Class to be less reliable than other new cars. This prediction is based on Mercedes-Benz's brand history and the previous generation of the S-Class.

Overall Reliability
The 2021 Mercedes-Benz S-Class has been recalled 5 times by NHTSA. View Recalls
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Overall Reliability Verdict
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POTENTIAL TROUBLE SPOTS
Engine Major
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Engine Minor
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Engine Cooling
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Transmission Major
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Transmission Minor
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Drive System
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Fuel System
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Electric System
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Climate System
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Suspension
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Brakes
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Exhaust
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Body Integrity
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Body Hardware
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Power Equipment
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In-car Electronics
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Reliability indicates how models have performed in the past, providing the basis for predicting how the vehicles will hold up in the year ahead. These charts provide the most comprehensive reliability information available to consumers. Based on information received from our latest subscriber survey for over 300,000 vehicles, our reliability history charts give you a rundown on how 2000 through 2021 vehicles are holding up in 17 potential trouble spots, ranging from the engine, transmission, and brakes to power equipment and the electrical system. NA indicates that we did not receive a large enough sample size to provide data for a specific year. An X indicates that the vehicle was not manufactured for a specific year.

Learn more about car Reliability.

Recalls
PROVIDED BY
ELECTRICAL SYSTEM
Nov 29, 2021
Driver distraction can increase the risk of a crash.
Summary:
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2021 S580, 2022 EQS450, EQS580, and S500 vehicles with an active and connected Mercedes me connect account. The MBUX infotainment system might allow activation of the television and internet display while driving, causing a distraction for the driver.
What should you do:
MBUSA has updated their computer server to correct the issue, free of charge. Therefore, owners will not require a visit to a dealer for this recall. Owner notification letters are expected to be mailed January 28, 2022. Owners may contact MBUSA customer service at 1-800-367-6372.
For more information:
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.
NHTSA CAMPAIGN ID Number: 21V931000
Potential Number of Units Affected: 227
ENGINE AND ENGINE COOLING
Oct 29, 2021
An engine stall can increase the risk of a crash.
Summary:
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2021 S580 and Maybach S580 vehicles. An engine control unit software error may cause a sudden engine stall, without the ability to restart the vehicle.
What should you do:
Dealers will update the engine control unit software, free of charge. Owners were notified of the defect on December 3, 2021. A second notice will be sent once the remedy is available. Owners may contact MBUSA customer service at 1-800-367-6372.
For more information:
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.
NHTSA CAMPAIGN ID Number: 21V843000
Potential Number of Units Affected: 8669
AIR BAGS
Oct 11, 2021
A deactivated passenger air bag increases the risk of injury during a crash.
Summary:
Mercedes-Benz USA, LLC. (MBUSA) is recalling certain 2021 S500, S580, and Maybach S580 vehicles. The air bag control unit software may deactivate the occupant recognition control unit, resulting in a deactivated front passenger air bag.
What should you do:
Dealers will update the air bag control unit software, free of charge. Owner notification letters were mailed December 1, 2021. Owners may contact MBUSA customer service at 1-800-367-6372.
For more information:
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.
NHTSA CAMPAIGN ID Number: 21V789000
Potential Number of Units Affected: 1311
FUEL SYSTEM, GASOLINE
Sep 10, 2021
An engine stall increases the risk of a crash.
Summary:
Mercedes-Benz USA, LLC. (MBUSA) is recalling certain 2021 S580 vehicles. The suction jet pump in the fuel tank may have a loose or missing nozzle, which can cause the pump to fail and result in an engine stall.
What should you do:
Dealers will inspect and replace as necessary, the fuel tank including the suction jet pump, free of charge. Owner letters were mailed October 26, 2021. Owners may contact MBUSA customer service at 1-800-367-6372.
For more information:
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.
NHTSA CAMPAIGN ID Number: 21V704000
Potential Number of Units Affected: 7
COMMUNICATION, ELECTRICAL SYSTEM
Feb 05, 2021
Failure of the eCall system may result in emergency responders being dispatched to the wrong location, increasing the risk of injury following a crash.
Summary:
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.
What should you do:
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.
For more information:
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.
NHTSA CAMPAIGN ID Number: 21V058000
Potential Number of Units Affected: 1292258
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