What do China-spec, US-spec, and Europe-spec mean?

[VonHenry]

Here is the relevant introduction about China-spec, US-spec, and Europe-spec: China-spec: China-spec vehicles are specifically designed for the Chinese market, better suited to China's fuel quality, road conditions, climate, etc. US-spec: US-spec vehicles mainly refer to imported cars whose production specifications are not based on Chinese regulations but rather on the requirements of overseas regions. This includes not only US-spec vehicles produced specifically for the American market according to US regulations but also models produced according to Middle Eastern regulations. Europe-spec: Europe-spec vehicles are those specifically designed by foreign automakers for sale in Europe, similar to US-spec vehicles. It is worth noting that Europe-spec vehicles have high fuel quality requirements, and the fuel quality in most parts of China does not meet the usage standards of non-China-spec vehicles, which can easily cause fuel system blockages and, in severe cases, lead to major engine repairs.