Chevrolet Sonic engine shaking and stalling at traffic lights with warning light on on Chevrolet Sonic

Some Chevrolet Sonic owners report experiencing engine shaking and stalling at traffic lights, often accompanied by a warning light. These issues may stem from ignition system problems, such as faulty spark plugs or worn ignition coils, as well as fuel system complications like a clogged fuel filter or damaged fuel injector. Additionally, low or contaminated engine oil can contribute to these symptoms. The check engine light may illuminate without an obvious cause, which can typically be resolved for $100 to $200, but a persistent light could signal more serious problems, including potential engine stalling. Some owners have noted that bad ignition coils and fuel quality issues, such as bad gas or water in the tank, can exacerbate performance issues. The safety risks associated with engine stalling are significant, particularly in high-traffic scenarios, and there have been reports of complete engine failure in severe cases, leading to costly repairs or replacements. It is crucial for owners experiencing these symptoms to seek inspection from a qualified mechanic to diagnose and address the underlying issues effectively.