Kei Vehicles Capabilities 
by derekheidenreichNovember 26, 2024
Kei Vehicle’s Payload Capacity Hulling & Towing
by derekheidenreichNovember 26, 2024A Kei truck's (referred to in the U.S. as a mini truck), Kei van's, and Kei car's payload capacity for hauling and towing depends on several factors. 25-year-old Kei vehicles are designed to be the workhorse of Japan. However, due to Japanese government regulations on Kei trucks, payload capacity is limited, the engine size must not exceed 660cc, and the total width and length are regulated, with different dimensions depending on the year.
Kei vehicle's Hulling payload capacity
Kei Trucks,
Kei trucks (mini trucks) with two passengers have a government-regulated payload capacity of 771 lbs (350 kg). However, depending on the model's engine, suspension, and brakes, the payload capacity of Kei trucks can exceed government regulations, reaching as high as 970 lbs (440 kg) at lower speeds with only the driver on board.
Kei Vans,
Kei Vans have a government-regulated payload of 440-551 lbs, depending on the model, for 4 passengers, and, depending on the model's engine, suspension, and brakes, can haul up to 771 lbs for 2 passengers.
Kei Cars,
Kei cars with up to four passengers have a payload capacity of between 440 lbs (200 kg) and 551 lbs (250 kg).
Kei Vehicle's Towing payload capacity
It is important to note that Kei trucks (mini trucks), vans, and cars are not designed for towing; they do not come equipped with a factory-installed hitch, and there are no manufacturer- or government-regulated towing payloads. However, hitch attachments are relatively easy to find, especially for trucks, and by examining the payload capacities of Kei truck trailers available in the Japanese marketplace, we can get an idea of their towing capabilities.
Kei Trucks,
Kei trucks (mini trucks) with 2 people (driver and one passenger) can tow loads of up to 970 Lbs (440 kg). Kei truck models, which boast power outputs of 45+ horsepower and proper suspension and brakes, can tow up to 1,278 Ibs (580 kg) at low speeds with only the driver.
Kei Vans,
Kei Vans can tow loads of up to 550-693 lbs for 4 people and 970 lbs for 2 people. Models with 45+ HP, equipped with adequate brakes and suspension, can tow loads up to 1,100 Ibs at low speeds with only the driver.
Kei Cars,
Kei cars with up to 4 people can tow loads of up to 553-693 lbs, and up to 970 Lbs with up to 2 people with proper brakes and suspension.
It is recommended to use a trailer with its own braking system or to upgrade the trailer's braking system. Additionally, upgrading the tires can enhance the truck's stability and grip.
payload capacity Safety & Limits
It is essential to highlight that Kei trucks (mini trucks), vans, and cars are not specifically engineered for heavy loads. The engines can not handle high pressure at high RPM, and the frames are very light. When the Kei vehicle is carrying a load, keep a max speed of 35-50 mph, depending on the road, and avoid high RPMs. It is recommended when towing or hauling a heavy load to upgrade the brakes or use a modified trailer equipped with its own braking system. Additionally, upgrading to wider tires can enhance the truck's suspension, stability, and braking performance. For more safty info, take a look at our top speed guide.
