The person who stole the car.
Unless they made it blatantly obvious the car could be easily stolen.
Even then it's still the thief's fault. Just that the owner is asking for a slap by police for wasting their time when they have literally anything else that is more important than responding to your non-excusable reason for complaining about your idiocy. I will advocate the police should get to give you a glove slap for wasting their time and the taxpayer's money.
Either that or charge them with the cost of processing their complaint...
Unless they made it blatantly obvious the car could be easily stolen.
Even then it's still the thief's fault. Just that the owner is asking for a slap by police for wasting their time when they have literally anything else that is more important than responding to your non-excusable reason for complaining about your idiocy. I will advocate the police should get to give you a glove slap for wasting their time and the taxpayer's money.
Either that or charge them with the cost of processing their complaint...