Besides, can I drive my car the day it expires?
You can be ticketed for expired registration the day it's expired if you're stopped for something else or get a parking ticket. Otherwise, you might get away with it until the end of the month. After that, parking enforcement and police will run your plate and ticket you if they notice your expired tags.
Subsequently, question is, is there a grace period for expired registration? As others have stated, California has no grace period. What California does have is a progressive overdue penalty system, that can become extremely costly the longer you wait. In fact, for some older cars, the back-registration fees can exceed the value of the car.
Correspondingly, can you drive your car on the day Rego expires NSW?
If you don't renew your registration by its expiry date, your vehicle is unregistered. Driving an unregistered vehicle is illegal and carries heavy penalties. It's also potentially dangerous, and can mean that your vehicle is not covered by Compulsory Third Party (CTP) insurance.
What happens if your vehicle registration expires?
After the registration expires, the vehicle must not be driven until the registration is renewed. Driving an unregistered vehicle incurs heavy penalties. You still have 3 months after the registration has expired to renew your registration.