All cars are placed in a certain class, depending on their external dimensions, price, and the displacement and power of the engine under their hood. The most important parameter is the length of the car and the wheelbase of its axles.

Classification of cars by class can also be influenced by the manufacturer, who can prioritize or choose the class in which the car will be classified. There are several differences between the individual countries of the European Union in the classification of cars into certain classes.

Cold starts harm the engine, no matter the outside temperature. However, the lower the outside temperature, the longer it takes for the engine to warm up to the operating temperature, meaning that these adverse effects affect the engine for a longer period.

Today's article will focus on what happens in the engine during warm-up to its operating temperature.