What are the differences between Class A, B, C, D, and E sedans?

[SanThomas]

According to the German automobile classification standard: Class A (including A0/A00) vehicles refer to small cars, Class B vehicles are mid-range sedans, Class C vehicles are premium sedans, and Class D vehicles are luxury sedans. The most common method to classify these levels is by the length of the wheelbase—the distance between the two wheels. By measuring the wheelbase, one can determine the class of a car, which is the most intuitive method. Cars generally come in standard, low, mid, and high trim levels, which refer to: 1. Low trim: usually a simplified version without features like leather seats or power windows, lacking many electronic control functions; 2. Standard trim: includes normal electric controls such as power windows, power steering, and air conditioning; 3. Mid trim: slightly more advanced than the standard trim, including all standard features plus possibly additional elements like airbags, sunroof, leather seats, power seats, and seat heating; 4. High trim: more advanced than the above configurations, often considered the flagship version of the model.