The problem with Kei class cars isn’t a problem with the Kei class cars, it is a problem with other vehicles (and Drivers) on the road.

The reason Kei cars are failing ADRs on vehicle collision testing is because the ADRs (and ANCAP) takes into account the GVM 3495kg inadequacy light trucks that are being driven by unprofessional drivers who think that Driver Assistance means self-driving.

A Jimny in a collision with a Commodore or Falcon would have been non-fatal but when a day-drinking soccer mum in a Silverado drives over a Suzuki Swift or cyclist because it didn’t register on her ADAS system, there is carnage.