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What qualifies as a kei car?


Kei cars, also known as "kei jidōsha" in Japanese, are a unique category of small vehicles that originated in Japan. These cars are designed to meet specific regulations for size, engine capacity, and performance, making them an economical and practical choice for urban driving. In this article, we’ll explore what defines a kei car and why they are so popular in Japan and beyond.


Key Characteristics of a Kei Car


Kei cars are subject to strict regulations in Japan, which dictate their dimensions, engine size, and performance. These regulations ensure that kei cars remain compact, fuel-efficient, and affordable. Here are the main qualifications for a vehicle to be classified as a kei car:



  • Size Restrictions: Kei cars must not exceed 3.4 meters (11.2 feet) in length, 1.48 meters (4.9 feet) in width, and 2 meters (6.6 feet) in height. These compact dimensions make them ideal for navigating narrow city streets and fitting into tight parking spaces.

  • Engine Capacity: The engine size of a kei car is limited to 660cc. This small engine capacity ensures low fuel consumption and reduced emissions, aligning with Japan's environmental goals.

  • Power Output: Kei cars are restricted to a maximum power output of 64 horsepower. This limitation helps maintain their affordability and practicality for everyday use.


Benefits of Owning a Kei Car


Kei cars offer several advantages that make them a popular choice, especially in urban areas. Here are some of the key benefits:



  • Affordability: Kei cars are generally less expensive to purchase and maintain compared to larger vehicles. Their small engines also mean lower fuel costs.

  • Tax Incentives: In Japan, kei cars benefit from reduced taxes and insurance premiums, making them an economical option for budget-conscious drivers.

  • Ease of Parking: Thanks to their compact size, kei cars can fit into small parking spaces, which is a significant advantage in crowded cities.

  • Environmental Friendliness: With their small engines and lightweight design, kei cars produce fewer emissions, contributing to a cleaner environment.


Examples of Popular Kei Cars


Over the years, many manufacturers have produced iconic kei cars that have gained popularity both in Japan and internationally. Some well-known examples include:



  • Honda N-Box: A spacious and versatile kei car that is one of the best-selling models in Japan.

  • Suzuki Alto: A reliable and fuel-efficient kei car that has been a favorite for decades.

  • Daihatsu Move: Known for its practicality and innovative design, the Move is a popular choice among kei car enthusiasts.


Conclusion


Kei cars are a testament to the ingenuity of Japanese automotive engineering, offering a perfect blend of practicality, affordability, and environmental consciousness. Whether you’re navigating busy city streets or looking for an economical vehicle, kei cars provide a compelling option. Their unique characteristics and benefits make them a fascinating segment of the automotive world worth exploring.


Frequently Asked Questions

What is the 3 year car rule in Japan?


In addition to the initial cost (registration, tax, JCI), there're annual prefectural tax and normally private insurance fee. JCI inspection comes 3 years after the new model registration and every other year afterwards. Considering these, rental car would be less expensive for non residents.



Is 5% tint legal in Japan?


Windows: No tint can be present on driver and passenger side windows, however commercial UV window blocker is allowed. Lexan windows are not allowed unless they are approved via a case by case basis. Stickers/banners on the front windshield and rear glass are not allowed.



What qualifies for a kei car?


The regulations were revised multiple times until 1998, but since October 1998, the law consistently specifies a maximum vehicle length of 3.4 m (11.2 ft), width of 1.48 m (4.9 ft), height under 2.0 m (6.6 ft), and engine displacement under 660 cc (40.3 cu in).



What Kei cars are legal in the US?


25+ Year Old Kei Trucks: Potential for Street Legal Use
Kei trucks that are 25 years old or older may be eligible for street-legal status in certain states. This is due to the federal 25-year import rule, which exempts vehicles 25 years or older from having to comply with Federal Motor Vehicle Safety Standards (FMVSS).



What is the 25 year JDM law?


A motor vehicle that is at least 25 years old can be lawfully imported into the U.S. without regard to whether it complies with all applicable FMVSS. Such a vehicle would be entered under Box 1 on the HS-7 Declaration form to be given to Customs at the time of importation.



What are the requirements for a kei car?


Kei cars have always been defined by their maximum allowed engine size and external dimensions. The standards since 1990 mandate length less than 11 feet, 2 inches with a width less than 4 feet, 10 inches, an engine displacement below 660 cubic centimeters (0.6 liters), and a maximum power output of 63 horsepower.



Why are kei cars not sold in the US?


The primary concern driving these bans is safety. Some states classify Kei cars as “off-road vehicles,” arguing that they are unsuitable for public roadways. Others cite the vehicles' non-compliance with federal safety standards as justification for their exclusion from state roads.



What states are banning Kei cars?


For instance, states like Alabama and Arkansas allow these vehicles under certain conditions, such as enforcing speed restrictions or banning highway usage. On the other hand, states like Georgia, Maine, and New York have implemented outright bans, refusing to register Kei cars for road use.



What is the maximum engine size for a Kei car?


660cc
The kei class of vehicles allows for engines of no more than 660cc and no more power than 63 horsepower or so.



Why do Kei trucks need to be 25 years old?


The Kei cars on the road are all over 25 years old, so they don't have to conform to federal safety regulations. It's effectively the same reason you can operate the Model T and comply with federal rules.


Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.