How are sedans classified into categories A, B, C, and D?

[LeMalachi]

The classification method for sedans into categories A, B, C, and D is as follows: 1. A00 class refers to micro sedans, with a wheelbase between 2 to 2.2 meters and an engine displacement of less than 1 liter; 2. A0 class refers to small sedans, with a wheelbase of 2.2 to 2.3 meters and a displacement of 1 to 1.3 liters; 3. B class refers to mid-range sedans, with a wheelbase between 2.45 to 2.6 meters and a displacement of 1.6 to 2.4 liters; 4. C class refers to high-end sedans, with a wheelbase between 2.6 to 2.8 meters and an engine displacement of 2.3 to 3.0 liters; 5. D class refers to luxury sedans, with a wheelbase greater than 2.8 meters and a displacement of more than 3.0 liters.

[LaMaggie]

I've been driving for over a decade and have some insights about sedan classifications. The ABCD grading system is essentially based on size and positioning. A-segment cars are like compact cars, such as the Volkswagen Polo or Honda Fit, with a wheelbase under 2.5 meters - perfect for city driving with easy parking and low fuel consumption. B-segment refers to compact models represented by cars like the Toyota Corolla, with wheelbases around 2.6 meters, offering just the right family space and best value for money. C-segment leans toward business-oriented midsize sedans like the Audi A4 or Passat, featuring wheelbases of about 2.8 meters with spacious rear seats ideal for long trips. D-segment represents luxury full-size sedans such as the Mercedes-Benz S-Class, boasting wheelbases exceeding 3 meters with exquisite materials and superior comfort. Nowadays many models have blurred these boundaries - for instance, extended A-segment cars almost match B-segment vehicles in interior space.

[StEvan]

Having helped people choose cars for so many years, the ABCD classification should be based on actual needs. A-segment cars are affordable and flexible, making them the first choice for college students and office workers; B-segment cars offer more balanced space, especially suitable for small families of three; C-segment cars combine comfort and prestige, favored by those who frequently drive on highways; D-segment cars exude luxury but come with higher fuel consumption and maintenance costs. The market has further subdivided into A0-segment micro cars and A+-segment compact models, like the Sagitar, which sits between A-segment and B-segment in size. I believe the key is to consider daily usage scenarios—if the family is large, opt for B-segment or above; for pure commuting, A-segment is sufficient. With the advent of new energy vehicles, factors like electricity consumption and range have been added to the equation, but the logic of size classification remains largely unchanged.

[OBrielle]

Last time when helping a friend choose a car, I researched the classifications. Simply put, Class A is entry-level with a wheelbase of 2.3 to 2.5 meters, featuring light steering for easy handling; Class B is compact and practical with a wheelbase of 2.5 to 2.7 meters; Class C leans towards business use with a wheelbase exceeding 2.7 meters; Class D has a wheelbase over 2.8 meters and comes with executive rear seats. This classification was originally invented by the Germans, and Japanese cars later adopted this standard. Nowadays, domestic brands are competing beyond their classes, like the BYD Han, which has dimensions close to a Class C car but is priced as a Class B. When choosing a car, don't just look at the class—test drive to compare the sense of space and seat comfort.

[GabrielaAnn]

At the auto show, the salesperson explained to me that sedan classification is primarily based on wheelbase and price range. A-segment cars, priced around 100,000 RMB, focus on economy with shorter bodies for navigating narrow alleys. B-segment models, in the 150,000 RMB range, offer more comprehensive features. C-segment vehicles start at 250,000 RMB with more stable chassis tuning, while D-segment cars go straight to 500,000 RMB. Hybrid versions often upgrade by half a segment—for example, the Corolla Hybrid shows noticeably better space optimization than its gasoline counterpart. Note that SUVs are now taking over the D-segment market, with many business professionals switching to SUVs. During regular maintenance, I've noticed that parts for B-segment and above cars are generally 30% more expensive.

[PaulDella]

I used to spend a lot of time on car forums researching this. Class A cars are suitable for new drivers to practice with, being lightweight and easy to handle; Class B cars are great for families with spacious trunks that can fit a stroller; Class C cars have a strong executive feel, making them ideal for business trips and client pickups; Class D cars, like the Audi A8, feature top-notch air suspension that smooths out bumps. With the rise of electric vehicles, exceptions have emerged, such as the Tesla Model 3, which is sized like a Class B car but priced at a Class C level. For friends in northern regions, it's advisable to consider ground clearance when choosing a car, as some Class D vehicles have worse off-road capability than urban SUVs.