Once you’re registered for GST you must lodge a BAS every quarter or face fines and penalties. This is true even if you have only driven a little, or not at all.
If you haven’t driven at all during the quarter, you can advise the ATO of a Nil BAS using their automated phone service by calling 13 72 26. This service is available 24/7. Make sure you have your ABN handy. You’ll also need the Document ID of the BAS’s you’re lodging, which you can find in MyGov.
If you don’t plan to drive in the future you may like to consider de-registering for GST so that you don’t need to lodge any more BAS’s.