Kia Rio5 poor gas mileage and rough idling due to frequent ignition coil pack failures on Kia Rio5

Some Kia Rio5 owners report experiencing poor gas mileage and rough idling due to frequent ignition coil pack failures. These issues can manifest through symptoms such as the check engine light activating, poor engine performance or stalling, increased emissions, and difficulty starting the vehicle. Ignition coil problems can significantly impact gas mileage by disrupting the combustion process and overall engine efficiency. Additionally, some owners note that other common issues with Kia Rio models, such as premature spark plug wear, fuel leaks, and brake master cylinder problems, may also contribute to performance concerns. To mitigate these issues, it is crucial for owners to address ignition coil failures promptly and engage in regular maintenance, including checking spark plugs and fuel injectors, to enhance engine performance and fuel economy.