
Audi S-Class belongs to the D-class cars. Generally, there are A, B, C, and D-class cars, with standards varying by country. China lacks a unified standard, and since German cars were the first to establish joint ventures and capture a certain market share in China, the German classification method is often adopted. According to the German car classification standard: A-class cars: A00-class cars have a wheelbase between 2 meters and 2.2 meters, with an engine displacement of less than 1 liter; A0-class cars have a wheelbase of 2.2 meters to 2.3 meters and a displacement of 1 liter to 1.3 liters; Generally, A-class cars have a wheelbase ranging from 2.3 meters to 2.45 meters and a displacement of about 1.3 liters to 1.6 liters. B-class cars: B-class mid-range cars have a wheelbase of about 2.45 meters to 2.6 meters and a displacement from 1.6 liters to 2.4 liters. C-class cars: C-class premium cars have a wheelbase of about 2.6 meters to 2.8 meters and an engine displacement of 2.3 liters to 3.0 liters. D-class cars: D-class luxury cars are mostly grand in appearance, with extremely spacious interiors and very powerful engines. Their wheelbase is generally more than 2.8 meters, and the displacement is mostly above 3.0 liters.


