Yes, you can pay the registration fees first, but if the entire registration
renewal process (including smog test) is not complete before the tags on
your Mazda expire you will not receive new tags or registration stickers,
and could receive a registration ticket if stopped by the police. If it
turns out that you need more time to get your Mazda' smog check done, ask
the DMV for a temporary registration tag (that's the pink paper you see some
cars displaying on the rear windshield).
posted by SmogTips Support