That’s cause there’s effectively no collateral. Cars retain at least some of there value after it’s used and your required to get insurance on it, so if it’s totalled you can get a new one for collateral. Scooters retain even less of there value when used and are way harder to sell, they also usually are uninsured so if you wreck it there’s nothing left for the bank to repo.

It’s be better if the government could do the financing since they are a public good and they can stand to loose a couple thousand if someone wrecks there scooter.