Sedan, gasoline, built in Germany. Owner complaints on file from May 6, 2020 to Jan 14, 2026.
Owner complaints about this model year, by the year they were filed with NHTSA.
Owner complaints by component. Hover or focus a bar for the crash, fire, injury or death count.
Check a specific vehicle by VIN on NHTSA's site: a campaign may cover only part of a model year's production.
| Campaign | Filed | Subject | Component | Vehicles | Remedy |
|---|---|---|---|---|---|
| 22V-365 | May 20, 2022 | Error in the communication module's SIM card software can cause a mobile network connection failure, disabling the emergency call (eCall) system | Communication | 242,722 | Software update |
| 21V-527 | Jul 12, 2021 | Side crash sensor connectors may come loose, which could delay the activation of air bags and seatbelts during a side impact crash | Airbags | 542 | Part replacement |
| 21V-197 | Mar 19, 2021 | Front roof panel located between the windshield and the panoramic sunroof may not have been bonded correctly to the vehicle during a prior repair | Structure | 15,096 | Repair or modification |
| 21V-058 | Feb 5, 2021 | Software design of the communication module may fail to communicate the correct vehicle location for the emergency call system (eCall) in the… | Communication | 1,292,258 | Software update |
The full text of every complaint filed with NHTSA about this model year, newest first. Complaints are filed by owners and are not verified by NHTSA; NHTSA removes personal details before publishing.
4 complaints on file, page 1 of 1.
While driving down the road I heard a loud explosion that sounded like a gunshot hit my read window. This caused me to jerk the car and almost hit the driving car next to me. I pulled over and realized that my sunroof had suddenly exploded and shattered onto the shade located in the ceiling.
NHTSA complaint 11710851The 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)
NHTSA complaint 11694134Had 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.
NHTSA complaint 11571272INTERMITTENT (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
NHTSA complaint 11323574Technical service bulletins and other notices the manufacturer sent to dealers. A bulletin is not a recall; the 60 most recent are listed.