2020 MERCEDES-BENZ S-Class Problems

VIN Decoder

Premium Report

Complaints Reported

OBD2 Scanner Jump Starter Car Vacuum Tire Inflator Phone Mount Emergency Kit

As an Amazon Associate, ForCar.org earns from qualifying purchases.

Complaints by Component

FUEL/PROPULSION SYSTEM

1 complaint

The fuel pump My car stopped on the highway [XXX] on [XXX] with my children in the car with no warning at all. I was so lucky nobody hit us and it took 20 minutes of trying to start it to get off of the highway to a gas station where it cut off again The dealer said it is a known problem however my vin number was included despite the fact that they know that the 2020 mercedes benz s450 has an issue that should be recalled due to the severity of the situation and safety of the public. Warning lights did not come on until the car totally stopped. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Oct 17, 2025

ENGINE

1 complaint

The contact owns a 2020 Mercedes-Benz S 560. The contact stated while driving 10 MPH, the check engine warning light illuminated. The vehicle was taken to the dealer, where the warning light was cleared; however, the failure recurred the following day. The vehicle was taken back to the dealer, where it was diagnosed that the oil pump and an unknown wiring harness had failed and needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure, but no assistance was provided. The failure mileage was approximately 29,100.

Jul 22, 2024

VISIBILITY/WIPER

1 complaint

Had windshield breakage and replacement on 14 December 2023. On 29 January 2024, had an apparent windshield strike (pinhead size) and windshield cracked from middle to top. Within 20 minutes crack had spread all across the top of windshield. While parked crack spread down and completely across the bottom of windshield in about 30 minutes. Vehicle is now in Mercedes dealership for windshield service once again. I have been driving for 60+ years and never saw this massive of a windshield crack caused by a pinhead size strike. My belief is that either it was bad glass or installation. I have read numerous complaints regarding Mercedes glass and am concerned whether I can safely operate this vehicle. Would appreciate you looking into this issue.

Feb 11, 2024

VISIBILITY

1 complaint

The contact owns a 2020 Mercedes-Benz S560. The contact stated that while driving approximately 60 MPH, there was an abnormal sound and shards of glass started entering the vehicle from the sunroof. No injuries were sustained. The vehicle was taken to the dealer; however, the vehicle was not diagnosed. The contact stated that the vehicle was repaired. The manufacturer was notified in writing and he received a call back and was informed that no assistance would be offered. The failure mileage was 38,193.

Nov 23, 2022

VEHICLE SPEED CONTROL

1 complaint

INTERMITTENT (AT LEAST A HALF DOZEN TIMES SINCE FEB 2020 PURCHASE) UNINTENDED INCREASE IN SPEED BY AS MUCH AS 35 MPH; TAKEN TO SELLING DEALER WHO COULD NOT DETECT A PROBLEM OR DUPLICATE MALFUNCTION. *TR

May 06, 2020

STEERING,VEHICLE SPEED CONTROL,ELECTRONIC STABILITY CONTROL (ESC)

1 complaint

AUTOMATIC DRIVE SHUTS OFF WHEN YOU BRAKE. HOWEVER, IN A ROLLING STOP AND BRAKE, IT DOES NOT RESTART IN CERTAIN SITUATIONS WHEN YOU ACCELERATE OUT OF THE STOP. IT IS INCONSISTENT, BUT SERVICE TEAM AT LOCAL DEALER HAVE RECREATED THE SITUATION. THE CAR IS DESIGNED TO AUTO RESTART AND THE FUNCTION CANNOT BE DISABLED.

Dec 12, 2019

4.9/5.0

44 reviews

Frequently Asked Questions

How many problems does the 2020 MERCEDES-BENZ S-Class have?

The 2020 MERCEDES-BENZ S-Class currently has 6 owner-reported complaints according to NHTSA database. These complaints are organized by component to help identify common issues.

What are the most common problems with 2020 MERCEDES-BENZ S-Class?

The most common problems reported for the 2020 MERCEDES-BENZ S-Class are organized by component above. Each component section shows owner-reported issues, crash reports, and fire incidents to help identify patterns and problem areas.

Where does this 2020 MERCEDES-BENZ S-Class problem data come from?

All problem and complaint data for the 2020 MERCEDES-BENZ S-Class comes directly from the National Highway Traffic Safety Administration (NHTSA) database. These are real complaints submitted by actual vehicle owners.