Chevrolet Sonic hesitation in acceleration with bubbling fluid under the hood on Chevrolet Sonic

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

Problem overview

Some Chevrolet Sonic owners report experiencing hesitation in acceleration accompanied by bubbling fluid under the hood, which may indicate serious underlying issues. These symptoms could suggest engine overheating, potentially leading to performance problems. Additionally, some owners have encountered cooling system problems, such as radiator leaks, that can contribute to overheating and bubbling fluid. Transmission issues are also a concern, as the Chevy Sonic has a history of such problems that may manifest as hesitation during acceleration. Furthermore, leaks in the exhaust system can result in engine performance issues and unusual sounds, exacerbating the hesitation. Lastly, for those with a turbocharged Sonic, problems with the turbo or related components may also lead to performance issues and fluid leaks. It is advisable for owners experiencing these symptoms to consult a qualified mechanic for a thorough inspection and timely repairs to maintain optimal vehicle performance.

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