On the main screen of the app, tap on "Me" next to "Map" on the lower tab bar: 

Then select “Edit Vehicle": 

Then select both the make and model of your vehicle:

You can customize your vehicle profile right down to the trim and color:

Go back to the main screen and tap on the filters icon on the righthand side of the map, then scroll down to "Plugs" in your filter settings view- new filter settings adjusted to your vehicle profile (Matching my LEAF): 

Your vehicle profile is now complete: 

You can also manually set your compatibility--look to other FAQ topic about managing filter settings.