Mercedes-Benz S63 AMG acceleration bucking issue from a stop, smooth after initial pull off on Mercedes-Benz S63 AMG

Submitted by Vehicle Owner · Jun 23, 2025
Published by RepairPal

Problem overview

Some Mercedes-Benz S63 AMG owners report experiencing acceleration bucking issues from a stop, which tend to smooth out after the initial pull-off. This problem may be attributed to several factors, including potential transmission issues, such as a faulty transmission control module or problems with the transmission fluid. Additionally, some owners have noted that engine misfires, possibly due to faulty spark plugs, ignition coils, or fuel injectors, can cause jerking during acceleration. A malfunctioning throttle position sensor has also been reported to lead to erratic acceleration behavior, resulting in bucking or hesitation. Furthermore, issues with the fuel system, such as clogged fuel filters or failing fuel pumps, may contribute to poor acceleration performance. Lastly, some owners have identified problems with suspension components or the drivetrain, like worn-out bushings or CV joints, as factors affecting their acceleration experience. It is advisable for those experiencing these issues to consult a qualified mechanic for proper diagnosis and timely repairs to ensure a smooth and safe driving experience.

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