Chevrolet Sonic burning rubber smell and rough idle when stopped on Chevrolet Sonic

Some Chevrolet Sonic owners report experiencing a burning rubber smell, often attributed to a slipping serpentine belt that affects various engine components. Additionally, these owners may also encounter a rough idle when stopped, which can stem from issues such as vacuum leaks, spark plug malfunctions, or ignition coil problems. Mechanical concerns, including engine timing issues, low cylinder compression, exhaust leaks, worn piston rings, or metal shavings in the oil, can further exacerbate the rough idle. To address these issues, it is recommended that owners have the serpentine belt inspected and replaced if needed, as well as check for vacuum leaks and ignition system faults. If these measures do not rectify the situation, consulting a qualified mechanic for a comprehensive diagnosis and repair is advisable to ensure the Chevrolet Sonic operates optimally.