Take a stroll through the neighborhood at varying times, day and night.
Take a camera with you and photograph every vehicle you don't recognize as belonging there. Don't hide the fact that you're taking pictures. This will encourage the perps to move to another location.
If anyone asks what you're doing, tell them there has been some vandalism in the neighborhood and the police told you to be on the look-out for strange cars.
You have a right to photograph any person or vehicle, including license number, visible in a public place.
We have done this in my area and where my daughter used to live. Drug traffic at one house and issues from said traffic. We posted up and took pics of every car that came and went. Some of the locals would walk the alley to get there and we snapped them as well. Mailed a package with all the pics to the house. Traffic slowed significantly. One more round of pics and the dealer moved.
We and our neighbors here have done this a few times.
Cockroaches do not like the light. They will move on.