Non-Operable vehicle at rental property

[Rob Campbell-Nixon]

This weekend I received a letter from the city government saying one of my rental properties has an non-operable vehicle in front of it, because of flat tires and expired license plates,  the letter states i have 20 days to fix it or will have to attend municipal court and will receive a fee up to $500.  I immediately notified the tenant and sent a letter stating the lease violation.  If the tenant doesn't fix the issue what should i do?  Can i tow the vehicle at their expense?  property is located in independence mo