https://plaincars.com/make/mercedes-benz-s-450 New NHTSA complaints and recalls filed for the Mercedes-Benz S 450. en-us Sun, 18 Oct 2026 05:32:02 GMT https://plaincars.com/make/mercedes-benz-s-450 https://plaincars.com/make/mercedes-benz-s-450#complaint-2166144 Wed, 14 Jan 2026 00:00:00 GMT 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. https://plaincars.com/make/mercedes-benz-s-450 https://plaincars.com/make/mercedes-benz-s-450#complaint-2140825 Fri, 17 Oct 2025 00:00:00 GMT 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 iss https://plaincars.com/make/mercedes-benz-s-450 https://plaincars.com/make/mercedes-benz-s-450#complaint-2131838 Fri, 19 Sep 2025 00:00:00 GMT The car is out of control! It first began a couple of weeks ago when (1) the side view mirrors no longer closed automatically 2) Next, while I was driving, the car yesterday, the seat belt suddenly tightened as the car prepared for a sudden impact (which there was none).3) Today, the car refused to stop when I backed it out of the garage. It hit a tree behind us and the car has a rear dint! I https://plaincars.com/make/mercedes-benz-s-450 https://plaincars.com/make/mercedes-benz-s-450#complaint-2131839 Fri, 19 Sep 2025 00:00:00 GMT The car is out of control! It first began a couple of weeks ago when (1) the side view mirrors no longer closed automatically 2) Next, while I was driving, the car yesterday, the seat belt suddenly tightened as the car prepared for a sudden impact (which there was none).3) Today, the car refused to stop when I backed it out of the garage. It hit a tree behind us and the car has a rear dint! I https://plaincars.com/make/mercedes-benz-s-450 https://plaincars.com/make/mercedes-benz-s-450#complaint-2058420 Wed, 22 Jan 2025 00:00:00 GMT The contact owns a 2018 Mercedes-Benz S450. The contact stated while driving at an undisclosed speed, the gear shifter independently shifted into neutral. The contact had to hold down the gear shifter for about 30 seconds before the system was reset. Additionally, the check engine warning light was later illuminated. The vehicle was taken to the dealer where it was diagnosed with transmission valv https://plaincars.com/make/mercedes-benz-s-450 https://plaincars.com/make/mercedes-benz-s-450#complaint-2011100 Sat, 27 Jul 2024 00:00:00 GMT I was driving on highway on 7/26 Friday in exit lane when my panoramic sunroof exploded and shattered on me while driving. It sounded like a shogun. Some of the glass came in on me and other part flew out vehicle causing paint damage. I inspected car there was no impact from anything (ie rock, branch etc). It was a clear sunny dry day no vehicles in front that would have kicked up an object no imp https://plaincars.com/make/mercedes-benz-s-450 https://plaincars.com/make/mercedes-benz-s-450#complaint-1966491 Sun, 11 Feb 2024 00:00:00 GMT 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 serv https://plaincars.com/make/mercedes-benz-s-450 https://plaincars.com/make/mercedes-benz-s-450#complaint-1898121 Mon, 29 May 2023 00:00:00 GMT Steering wheel became extremely stiff to turn and a message that read “steering malfunction increase physical effort” appeared while driving at around 30 mph while in a vacation trip, not only was this extremely unsettling since it happened suddenly but I had to act fast to avoid a collision with other vehicles, once I made it to a safe location I shut the vehicle off and restarted after 15 minute https://plaincars.com/make/mercedes-benz-s-450 https://plaincars.com/make/mercedes-benz-s-450#complaint-1877201 Thu, 02 Mar 2023 00:00:00 GMT The contact owns a 2018 Mercedes-Benz S450. The contact stated while driving at an undisclosed speed, the contact attempted to depress the brake; however, the vehicle failed to decelerate and slow as needed. The contact stated that the brakes failed to work as needed. The contact stated that the “Service Required” message was displayed on the instrument panel. The vehicle was taken to a dealer and https://plaincars.com/make/mercedes-benz-s-450 https://plaincars.com/make/mercedes-benz-s-450#complaint-1876288 Sun, 26 Feb 2023 00:00:00 GMT I’m reporting this safety concern and seeking advisement from those more knowledgeable than myself on this issue. Recently, as I attempted to actuate the brake of my vehicle. My right foot was entangled with the brake pedal as I moved it from the acceleration pedal to the brake pedal in observance of a “Stop Sign.” I barely avoided what surely would have been a catastrophic collision with anothe https://plaincars.com/make/mercedes-benz-s-450 https://plaincars.com/make/mercedes-benz-s-450#recall-22V365000-mercedes-benz-mercedes-benz-s-450-2020 Fri, 20 May 2022 00:00:00 GMT Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2017-2022 CLA-Class, GLA-Class, GLE-Class, GLS-Class, SLC-Class, A-Class, AMG GT-Class, C-Class, E-Class, S-Class, SL-Class, GLC-Class, CLS-Class, GLB-Class, and G-Class vehicles. Please refer to MBUSA's recall report for specific vehicle model details. An error in the communication module's SIM card software can cause a mobile network connecti https://plaincars.com/make/mercedes-benz-s-450 https://plaincars.com/make/mercedes-benz-s-450#recall-22V365000-mercedes-benz-mercedes-benz-s-450-2019 Fri, 20 May 2022 00:00:00 GMT Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2017-2022 CLA-Class, GLA-Class, GLE-Class, GLS-Class, SLC-Class, A-Class, AMG GT-Class, C-Class, E-Class, S-Class, SL-Class, GLC-Class, CLS-Class, GLB-Class, and G-Class vehicles. Please refer to MBUSA's recall report for specific vehicle model details. An error in the communication module's SIM card software can cause a mobile network connecti https://plaincars.com/make/mercedes-benz-s-450 https://plaincars.com/make/mercedes-benz-s-450#recall-21V527000-mercedes-benz-mercedes-benz-s-450-2020 Mon, 12 Jul 2021 00:00:00 GMT Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2021 CLS450, AMG E53, AMG CLS53, E350, E450, AMG GT43, AMG GT53, 2020 S450, S560, G550, AMG GLC63, 2020-2021 GLC300, and AMG G63 vehicles. The side crash sensor connectors may come loose, which could delay the activation of air bags and seatbelts during a side impact crash. https://plaincars.com/make/mercedes-benz-s-450 https://plaincars.com/make/mercedes-benz-s-450#recall-21V197000-mercedes-benz-mercedes-benz-s-450-2020 Fri, 19 Mar 2021 00:00:00 GMT Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2017-2020 C300 Coupe, C43 Coupe AMG, C43 AMG, 2015-2020 C300, GLA250, 2016-2018 C350e, CLA45 Coupe AMG, 2015 C400, S65 AMG, 2015-2019 C63 AMG, 2016 C450, 2015-2016 GLA45 AMG, S600, 2016-2020 GLC300, 2017-2019 GLC43 AMG, GLE43 Coupe AMG, 2014-2019 CLA250 Coupe, 2014-2015 CLA45 AMG, 2018 GLC63 AMG, 2014-2017 S550, 2018-2020 S450, 2016-2019 GLE63 Co https://plaincars.com/make/mercedes-benz-s-450 https://plaincars.com/make/mercedes-benz-s-450#recall-21V197000-mercedes-benz-mercedes-benz-s-450-2019 Fri, 19 Mar 2021 00:00:00 GMT Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2017-2020 C300 Coupe, C43 Coupe AMG, C43 AMG, 2015-2020 C300, GLA250, 2016-2018 C350e, CLA45 Coupe AMG, 2015 C400, S65 AMG, 2015-2019 C63 AMG, 2016 C450, 2015-2016 GLA45 AMG, S600, 2016-2020 GLC300, 2017-2019 GLC43 AMG, GLE43 Coupe AMG, 2014-2019 CLA250 Coupe, 2014-2015 CLA45 AMG, 2018 GLC63 AMG, 2014-2017 S550, 2018-2020 S450, 2016-2019 GLE63 Co https://plaincars.com/make/mercedes-benz-s-450 https://plaincars.com/make/mercedes-benz-s-450#recall-21V197000-mercedes-benz-mercedes-benz-s-450-2018 Fri, 19 Mar 2021 00:00:00 GMT Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2017-2020 C300 Coupe, C43 Coupe AMG, C43 AMG, 2015-2020 C300, GLA250, 2016-2018 C350e, CLA45 Coupe AMG, 2015 C400, S65 AMG, 2015-2019 C63 AMG, 2016 C450, 2015-2016 GLA45 AMG, S600, 2016-2020 GLC300, 2017-2019 GLC43 AMG, GLE43 Coupe AMG, 2014-2019 CLA250 Coupe, 2014-2015 CLA45 AMG, 2018 GLC63 AMG, 2014-2017 S550, 2018-2020 S450, 2016-2019 GLE63 Co https://plaincars.com/make/mercedes-benz-s-450 https://plaincars.com/make/mercedes-benz-s-450#recall-21V072000-mercedes-benz-mercedes-benz-s-450-2018 Fri, 12 Feb 2021 00:00:00 GMT Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2017-2019 C300, E300, 2018-2020 CLA250, 2020 CLS450, AMG E53, AMG GT53, GLE450, 2018 AMG E63, AMG GTA, 2017-2020 GLA250, GLC300, 2019 GLC350, AMG GLC43, 2017-2018 GLE350, 2019 AMG GLC 43, GLC350, GLE400, 2017 GLS450, S550, C300 Cabrio, and 2018-2019 S560 vehicles. On June 18, 2021, an additional 9 vehicles were added, including certain 2021 GL https://plaincars.com/make/mercedes-benz-s-450 https://plaincars.com/make/mercedes-benz-s-450#recall-21V058000-mercedes-benz-mercedes-benz-s-450-2020 Fri, 05 Feb 2021 00:00:00 GMT 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 veh https://plaincars.com/make/mercedes-benz-s-450 https://plaincars.com/make/mercedes-benz-s-450#recall-21V058000-mercedes-benz-mercedes-benz-s-450-2019 Fri, 05 Feb 2021 00:00:00 GMT 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 veh https://plaincars.com/make/mercedes-benz-s-450 https://plaincars.com/make/mercedes-benz-s-450#recall-21V058000-mercedes-benz-mercedes-benz-s-450-2018 Fri, 05 Feb 2021 00:00:00 GMT 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 veh https://plaincars.com/make/mercedes-benz-s-450 https://plaincars.com/make/mercedes-benz-s-450#complaint-1661855 Wed, 06 May 2020 00:00:00 GMT 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 https://plaincars.com/make/mercedes-benz-s-450 https://plaincars.com/make/mercedes-benz-s-450#complaint-1621570 Sun, 17 Nov 2019 00:00:00 GMT A PORTION OF THE GLASS ROOF SHATTERED WHILE I WAS DRIVING DOWN A MULTI LANE HIGHWAY GOING SLOWER THAN THE SPEED LIMIT SINCE IT WAS EVENING COMMUTER TIME. THE ROOF HAS THREE GLASS SECTIONS. THE FORWARD MOST SECTION OF THE GLASS ROOF IS WHAT SHATTERED. https://plaincars.com/make/mercedes-benz-s-450 https://plaincars.com/make/mercedes-benz-s-450#recall-19V540000-mercedes-benz-mercedes-benz-s-450-2019 Fri, 19 Jul 2019 00:00:00 GMT Mercedes-Benz USA, LLC. (MBUSA) is recalling certain 2019 C300 Cabrio, C300A Cabrio 4MATIC, C300 Coupe, C300 Coupe 4MATIC, C300, C300 4MATIC, C43 AMG Cabrio 4MATIC, C43 AMG Coupe 4MATIC, C43 AMG 4MATIC, C63 AMG Cabrio, C63S AMG Cabrio, C63 AMG Coupe, C63S AMG Coupe, C63 AMG, C63S AMG, CLS450, CLS450 4MATIC, CLS53 AMG 4MATIC, E300, E300 4MATIC, E450 Cabrio, E450 Cabrio 4MATIC, E450 Coupe, E450 Coup https://plaincars.com/make/mercedes-benz-s-450 https://plaincars.com/make/mercedes-benz-s-450#complaint-1571971 Tue, 04 Jun 2019 00:00:00 GMT TL* THE CONTACT OWNS A 2018 MERCEDES-BENZ S450. WHILE DRIVING 75 MPH WITH THE CRUISE CONTROL ENGAGED, THE AUTOMATIC BRAKING ACTIVATED ON ITS OWN IN TRAFFIC. THE CONTACT HAD TO DEPRESS THE BRAKE PEDAL TO DISENGAGE THE CRUISE CONTROL IN ORDER TO DRIVE SAFELY. THE VEHICLE WAS TAKEN TO MERCEDES-BENZ OF ALEXANDRIA (200 S PICKETT ST, ALEXANDRIA, VA 22304, (703) 341-2100) TO BE DIAGNOSED, BUT THE FAILURE https://plaincars.com/make/mercedes-benz-s-450 https://plaincars.com/make/mercedes-benz-s-450#complaint-1431311 Fri, 08 Dec 2017 00:00:00 GMT THE PRE-COLLISION SAFETY FEATURE GOES OFF WHEN THERE IS NO COLLISION IMMINENT. IT IS FRIGHTENING AND COULD ACTUALLY CAUSE AN ACCIDENT. https://plaincars.com/make/mercedes-benz-s-450 https://plaincars.com/make/mercedes-benz-s-450#complaint-1431312 Fri, 08 Dec 2017 00:00:00 GMT THE PRE-COLLISION SAFETY FEATURE GOES OFF WHEN THERE IS NO COLLISION IMMINENT. IT IS FRIGHTENING AND COULD ACTUALLY CAUSE AN ACCIDENT.