I hired a Grab driver and he told me he was working while driving Grab, so out of curiosity I asked him how?

He said his job is just to spot car number plate parked outside and check in the system if the owner did not pay for their installment, then he can call the towing company to tow the car and get his commission.

BUT, there is one condition: If the owner has paid more than 75% of the installment, then they have no rights to tow the car anymore.

Any idea why?

I paid mine on time, just curious.