What does Volkswagen vwag mean?

[LaAlexander]

vwag is the model number of a spark plug. Spark Plug: The spark plug is an essential component for the normal operation of an engine. After the air-fuel mixture is drawn into the cylinder and compressed, it must be ignited by the spark plug to complete the power stroke. Therefore, to some extent, the performance of the spark plug directly affects the ignition and combustion of the air-fuel mixture. However, during this ignition process, the electrodes of the spark plug will also wear out. Replacing Spark Plugs: Depending on factors such as the melting point and hardness of the electrode material, the electrodes will gradually wear out. When the gap between the electrodes becomes too large, the vehicle may experience issues such as reduced power, difficulty starting when cold, and increased fuel consumption. At this point, it is advisable to consider replacing the spark plugs. Generally, the normal service life of spark plugs in ordinary passenger cars is around 20,000 kilometers. Additionally, some manufacturers use precious metals like platinum in the electrodes to extend the durability of the spark plugs, while also increasing the strength of the ignition energy.