除此之外重要国家及地面小车分类方法，世界还也可以有一点点首要汽车分类标准，以下做一简介。Vehicle size categories for passenger vehicles for the China NCAP program as defined by the China Automotive Technology and Research Center may appear similar to the European system, but are closer to the Japanese in application.
Small cars, sometimes referred to as the A0-segment, are vehicles including MPVs of less than 4 m in length (roughly corresponding to the European A- and B-segments, and the US EPA's mini- and subcompact classes).
Vehicle size classes in Japan are rather simple compared to other regions. There are just three different classes defined by regulations:
Car classification is subjective since many vehicles fall into multiple categories or do not fit well into any. Not all car types are common in all countries and names for the same vehicle can differ by region. Furthermore, some descriptions may be interpreted differently in different places. Broadly speaking, there are a set of classifications which are widely understood in North America, and another set which are somewhat understood in English-speaking contexts in Europe. Some terms borrowed from non-English languages may have different meanings when used in their native language.
Category A (A-segment) vehicles are 2-box vehicles (hatchbacks, MPVs or wagons) of between 4 and 4.5 meters in length, or 3-box vehicles (i.e. sedans with a trunk) with engines of less than 1600 cc.
Keijidosha (light cars): Buyers of Kei cars enjoy a number of tax, registration and other benefits to encourage the purchase of these tiny vehicles (among road vehicles requiring a license only the smart fortwo and Russian Oka are smaller). Regulations have been updated a number of times over the years to allow larger, more powerful cars to be developed and maintain demand as buyers become more affluent but now define a vehicle less than 3.4 m long, 1.48 m wide, 2 m high and with an engine under 660 cc.
Category B (B-segment) vehicles are longer than 4.5 m in length with engines of over 1600 cc.
Small size vehicles, commonly called "5 number" vehicles in reference to their license-plate prefix. Historically subject to different design rules than "normal size" vehicles, this class is defined as limited to vehicles less than 4.7 m long, 1.7 m wide, 2 m high and with engines under 2000 cc. Vans, trucks and station wagons (considered commercial vehicles in Japan) in the small size class receive a "4 number" license prefix. Since the 1980s an increasing number of Japanese vehicles have grown beyond the confines of the small size class as most automakers now design vehicles primarily for export, and most compact and even subcompact cars well under 4.7 m in length are now too wide, or have engines too large.
Multi-Purpose Vehicles, or MPVs: those with more than two rows of seats.
Normal size vehicles, commonly called "3 number" in reference to their license-plate prefix (trucks and buses over 2000 cc have license plates numbers beginning with 1 and 2 respectively), are those more than 4.7 m long, 1.7 m wide, 2 m high or with engines larger than 2000 cc. While in the past vehicles such as the original Honda Legend were produced in both "small size" (just under 4.7 m long and 1.7 m wide) for the domestic market, and longer and wider "normal size" versions, primarily for export markets, it is now only passenger and commercial vans which are produced with versions for both regulatory classes.
Sport Utility vehicles or SUVs.
Microcar, Bubble car
Small family car
Small family car
Large family car
Large family car
Entry-level luxury car
Compact executive car
Mid-size luxury car
BMW 5 Series
Full-size luxury car
Leisure activity vehicle
Mid-size crossover SUV
Jeep Grand Cherokee