How are vehicle classes A, B, C, and D differentiated?

2 Answers
AveryFitz
07/28/25 9:28pm
Vehicle classes A, B, C, and D are differentiated as follows: 1. Class A00 refers to micro cars, with a wheelbase between 2 to 2.2 meters and an engine displacement of less than 1 liter; 2. Class A0 refers to compact cars, with a wheelbase of 2.2 to 2.3 meters and a displacement of 1 to 1.3 liters; 3. Class B refers to mid-size cars, with a wheelbase between 2.45 to 2.6 meters and a displacement of 1.6 to 2.4 liters; 4. Class C refers to premium cars, with a wheelbase between 2.6 to 2.8 meters and an engine displacement of 2.3 to 3.0 liters; 5. Class D refers to luxury cars, with a wheelbase exceeding 2.8 meters and a displacement of over 3.0 liters.
Was this review help?
13
5
Share
VanCamille
08/12/25 2:07am
I've been driving a car for commuting to work for many years, and I think the classification of cars is actually quite simple: Class A refers to small cars, like the familiar Polo or Fit, with short wheelbases and compact bodies. They are easy to park but have limited space, suitable only for singles or couples. Class B is compact, such as the Corolla or Civic, offering moderate space and reasonable fuel consumption, making them very practical for daily driving. Class C is mid-size, like the Camry or Accord, with longer wheelbases and spacious comfort, ideal for families with kids or long trips. Class D is full-size, such as the A6 or 5 Series, luxurious and powerful but expensive, suitable for business or those seeking prestige. The key is to look at the wheelbase and size—from A to D, they increase progressively. Generally, Class A/B cars are the most hassle-free in the city, while Class C/D are better suited for highways. Remember to test drive and experience the space before choosing a car, don’t just focus on the appearance.
Was this review help?
3
0
Share
Expand All
More Forum Discussions

How Fast Can You Go in First Gear with Full Throttle?

Pressing the accelerator to the floor in first gear can achieve a maximum speed of 40km/h. Below are the specific speed ranges for each gear: 1st Gear: Used for normal starts or climbing very steep slopes. The speed is typically around 10 km/h. 2nd Gear: A transition gear for acceleration after starting or for low-speed driving, with speeds generally around 20 km/h. 3rd Gear: Used at speeds between 20-40km/h, commonly employed for city driving. 4th Gear: Suitable for speeds between 40-60km/h. 5th Gear: Can be used at speeds above 60km/h.
12
0
Share

What is Hyundai's luxury brand?

Hyundai's luxury models include Equus, Genesis, Genesis Coupe, Veracruz, and Azera. Hyundai Motor is divided into Hyundai Motor Korea and Beijing Hyundai. Beijing Hyundai is a joint venture between Hyundai Motor Group of Korea and Beijing Automotive Group of China. Hyundai Motor Company (Hyundai Motor) is one of the largest automobile companies in Korea, originally part of the Hyundai Group of Korea, and one of the world's top 20 largest automobile companies. It was founded in 1967 by Chung Ju-yung, the former chairman of the Hyundai Group. The company is headquartered in Seoul, Korea. Equus is a luxury sedan under the Hyundai brand, featuring a luxurious and avant-garde design for both the body and interior. In terms of power, the car is equipped with a 3.8L V6 engine and a 5.0L V8 engine. Genesis: Genesis is the first luxury brand model under the Hyundai Motor brand, equipped with a 3.3L and 3.8L V6 engine. Genesis Coupe: The Genesis Coupe is a high-end sports car launched by Hyundai Motor, featuring a front-engine, rear-wheel-drive layout. It is equipped with a high-performance engine, advanced transmission, and safety system, delivering outstanding performance. The car uses a 2.0T turbocharged engine, accelerating from 0 to 100 km/h in just 6.5 seconds. Veracruz: Veracruz is Hyundai's luxury SUV, with smooth and soft overall exterior lines. It is powered by an all-aluminum V6 engine, offering quick acceleration and a combined fuel consumption of 12L/100km. Azera: Azera is Hyundai's front-wheel-drive luxury sedan, a model of Korean high-end sedans. It is equipped with an all-aluminum dual overhead camshaft V6 engine and a 5-speed automatic transmission, delivering rapid power output.
13
4
Share

How often should the spark plugs of Wuling Hongguang S be replaced?

Wuling Hongguang S spark plugs are recommended to be replaced every two years or 40,000 kilometers. Under normal maintenance conditions, car spark plugs should be replaced after driving 40,000 to 60,000 kilometers, but this may vary depending on the brand and engine. It is recommended to follow the user manual. The following standards can be referenced for maintenance and replacement: platinum spark plugs should be replaced at 40,000 kilometers, ordinary nickel alloy spark plugs at 20,000 kilometers, and iridium spark plugs at 60,000 to 80,000 kilometers. Steps for replacing spark plugs: Open the hood, lift the plastic cover of the engine, remove the high-voltage distributor wires, and mark the position of each cylinder to avoid confusion. Use a spark plug socket to remove the spark plugs one by one. When removing them, check for any external debris such as leaves or dust, and make sure to clean them thoroughly. Place the new spark plugs into the spark plug holes, hand-tighten them a few turns, and then use the socket to tighten them further. Reinstall the removed high-voltage distributor wires in the firing order and secure the cover.
11
1
Share

What Causes Vehicle Shaking When Starting in First Gear?

Shaking or jerking sensations when starting in first gear may be caused by poor clutch lining contact, weakened damping spring tension, or uneven pressure spring tension in the clutch. Below are detailed explanations of the causes and solutions: Weakened Damping Spring Tension: Reduced elasticity in the clutch torsional damping springs can cause shaking during clutch engagement. If this is confirmed as the issue, the springs should be replaced promptly. Poor Clutch Lining Contact: Hardened clutch lining surfaces or adhesive deposits can easily lead to clutch shaking. Any foreign substances on the clutch lining should be removed immediately. Uneven Pressure Spring Tension: Inconsistent tension among the pressure springs, misaligned release lever adjustments, or uneven diaphragm spring fingers can result in asynchronous engagement timing. This causes uneven force distribution on the pressure plate, potentially tilting it and leading to poor contact between the driving and driven plates, resulting in clutch vibration. In such cases, it's advisable to visit a repair shop for inspection and replacement.
7
2
Share

What is the shelf life of gasoline in a fuel tank?

Gasoline has a shelf life of approximately 3 months when stored in a sealed fuel tank at room temperature. Below is relevant information: Active ingredients: The active components of gasoline are its light fractions, which are highly volatile. Gasoline stored for too long will have reduced combustible components and increased concentration of heavy gum-like substances. Using such gasoline not only results in weak engine performance but also causes hazards like fuel injector clogging and rapid carbon buildup in the engine. Shelf life: The length of gasoline's shelf life is primarily determined by its oxidation stability, which refers to how easily the gasoline's quality changes during storage, distribution, and use. If the quality doesn't change easily, it indicates good stability and longer storage potential.
3
4
Share

What is the speed in first gear?

The speed in first gear is the starting speed, generally ranging from 0-5 km/h. Below is relevant information about the design objectives of first gear and considerations for shifting gears in a car: Design objectives of first gear: The first gear in a car is designed to meet the need for starting on the maximum allowable slope when the car is in motion or fully loaded. Additionally, starting in first gear provides the fastest acceleration and is the gear with the lowest maximum speed. Considerations for shifting gears in a car: When starting in first gear, shift to second gear when the speed is between 15-20 mph, maintaining the engine speed at 2,000 rpm. Shift to third gear at 30 mph, keeping the engine speed at 2,000 rpm. Shift to fourth gear at 40 mph, maintaining the engine speed at 2,000 rpm. Shift to fifth gear at speeds above 50 mph, with the engine speed reaching around 2,000 rpm. It is important to shift at the right time—neither too early nor too late. After shifting, the clutch should be engaged smoothly and promptly, and the shifting action should be quick to minimize shifting time and reduce the loss of kinetic energy in the car.
3
1
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.