Wiper problems of the 2017 Mercedes Benz C300

The failure involves the windshield bonding system, specifically the urethane adhesive securing the windshield to the vehicle frame. The adhesive has failed, resulting in water intrusion and indicating loss of structural integrity. The vehicle is available for inspection upon request. This condition presents a significant safety hazard. The windshield is a structural component that contributes to roof strength, airbag deployment support, and occupant protection. Adhesive failure can lead to windshield displacement or detachment, especially at highway speeds, increasing the risk of serious injury or fatality to vehicle occupants and others on the roadway. The defect has been confirmed by an authorized mercedes-benz dealership (mercedes-benz of brooklyn). On March 28, 2026, the service advisor diagnosed faulty windshield adhesive and recommended full windshield and adhesive replacement. This confirms the issue is not cosmetic but a structural failure. The issue was reported to mercedes-benz USA under case #21435441. On April 9, 2026, the dealership relayed that the manufacturer reviewed the case and offered $400 toward repair, classifying the failure as “wear and tear. ” the manufacturer has not conducted a direct inspection beyond the dealership evaluation. There were no warning indicators, messages, or prior alerts. The first symptom was active water leakage into the cabin, suggesting sudden adhesive failure rather than gradual deterioration detectable by the driver. This unresolved defect continues to pose an active safety risk and warrants immediate investigation.

Piston 1 cracked at 48,000 miles. Mb told owner that the engine had to be replaced but when finding out that the warranty was up at 50,000 they replaced the piston instead. Car is still shaking at idle and rough ride. Engine shakes and jerks.

Car is a 2017 mercedes C300 coupe and has had to replace windshield 3 times. Problems with windshield cracking. 1st repair car came from dealership with a long crack on drivers side, 2nd car was at service center for 3 weeks to a month and customer came to pick up the car and long crack across the top of windshield. Happened while in mb possesion.