Under the impact of transition to the new post-industrial society, mass production recently faced the most numerous difficulties. They are caused by turbulences in the external environment in which companies operate, manifested in particular by enhancing the dynamism of markets and by deep changes in the structure of consumers’ demands. In this context, specialized literature records the concerns for increasing the efficiency and flexibility of products, elements involving radical changes of management and manufacturing technologies methods. Given these issues, the paper approaches two separate ways to improve the management of serial production: increasing economic efficiency by optimizing the size of batches and flexible production systems by implementing techniques to reduce the change-over time.