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Suspension, wheels, service Brakes
12/06/2025
Mercedes-Benz S580 equipped with 21-inch wheels has experienced numerous tire blowouts over the course of ownership — too many to count. The blowouts occurred during normal driving on typical roads. Several blowouts caused rim damage and created a dangerous situation, including moments where I nearly lost control of the vehicle. This appears to be a design defect involving the 21-inch wheel and low-profile tire configuration, which seems structurally inadequate for normal road conditions. The failures are recurring and not due to isolated hazards. Other S580 owners have reported identical issues with repeated blowouts on 21-inch wheels. This presents a serious safety hazard, and a permanent remedy is needed.
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Engine And Engine Cooling
09/01/2025
The contact owns a 2022 Mercedes-Benz S 580. The contact stated that while driving at an undisclosed speed, the check engine warning light illuminated and the engine stalled. The vehicle was taken to the dealer, where it was diagnosed with a failed CAM shaft solenoid. The contact was informed that the CAM shaft solenoid needed to be replaced. In addition, the contact was informed that the engine needed to be dismantled. The vehicle was not repaired. The manufacturer was made aware of the failure. The contact referenced an unknown recall with a similar failure description; however, the VIN was not under recall. The failure mileage was approximately 55,000.
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Structure, visibility/wiper
08/27/2025
Subject: Report of Spontaneous Sunroof Explosion - Mercedes S580 2022 Model Dear National Highway Traffic Safety Administration, I am writing to report a concerning incident that occurred on [XXX] at approximately [XXX] while I was driving my 2022 Mercedes S580 to work on [XXX] N. During my drive, I experienced a sudden, loud explosion within the vehicle. Initially, I believed it was either a gunshot or that I had been rear-ended. In a state of confusion, I quickly pulled over to the shoulder to assess the situation. Upon closer inspection, I discovered that my sunroof had shattered spontaneously. I am certain that this was not caused by an external object, such as a falling stone. There were no overpasses, bridges, or surrounding traffic that could have contributed to the damage. This was an extremely frightening experience, and I believe it is important to bring this matter to your attention for safety considerations. I have also reported this incident to my local Mercedes-Benz...
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Electrical System, unknown Or Other, engine
07/03/2025
Over ~3 years of ownership, the vehicle has experienced recurrent electrical and engine-management issues, resulting in 15+ service visits and ~100 cumulative days out of service at an authorized dealer. Patterns include: (1) electrical—keyless entry intermittently unresponsive, instrument cluster flickering/rebooting, multiple warning messages including a battery/electrical icon, HVAC/A/C becoming inoperative without cooling; and (2) powertrain/engine—check-engine light (MIL) illuminated, hesitation/limited power on initial acceleration, and rough operation after start. Safety risk: intermittent failure to unlock/start can leave occupants stranded; loss of power/hesitation creates risk when merging or crossing intersections; multiple warning messages/flicker are distracting; and loss of A/C in hot conditions has required operation with windows down to avoid heat stress. Reproduction/confirmation: The concerns have been observed by the dealer on multiple visits with fault codes recor...
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Suspension, wheels, service Brakes
07/31/2023
mechanical and safety-related failures observed in a Mercedes-Benz vehicle, specifically involving the suspension system, wheels, and braking components. Despite extensive repair efforts—including replacement of all four wheels and tires, complete AWD four-wheel alignment, and diagnostics performed at authorized Mercedes-Benz dealerships—the underlying issues persist. To date, the total cost incurred in attempting to remedy these defects exceeds $15,848. The vehicle and its components have been inspected by two independent Mercedes-Benz dealer service centers and a certified third-party auto inspection firm. All parties have confirmed, through drive testing and diagnostics, that the problems are reproducible and continue to impair vehicle safety and performance. The suspension and associated hardware have been identified as the root cause of instability and braking inconsistencies. These findings align with broader patterns observed in similar vehicles, suggesting a recurring defect th...