No state inspections here in Calif. but if you move here as a permanent residence, you are suppose to register the car at the DMV and have Calif plates. I think you have 30 days to have it done.
You are suppose to have your registration and a proof of insurance in the car at all times, along with a valid Drivers License.
Iam surprised Calif doesn`t have a state inspection, they are loosing a ton of revenue by not having it. what are these Politicians doing there in Sacramento? they are missing on another way to screw us

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The state will get you big time with expired registration. say the car has a mechanical problem and you just park it for a while. the registration is due and you just don`t pay it because it is not on the road. then 10 months later you decide to put it back on the road. you will still pay the full year reg plus penalities.
the way to go on that is to file a non-op (none operational) with the DMV. but you will still have to pay the full years registration, just not be charged with the penalities.
I was talking to a guy at PNP last week. he bought a 79 240d that had been sitting for 6 years and the registration hadn`t been paid or had a non-op. the DMV wanted the back 6 years registration plus the accumulated penalities.
If a vehicle is parked for 10 years and no registration or non-op has been filed, then the vehicle will be dropped off the DMV computers records. then it has to be re-registered an get a new plate, and everything continues on.
so this guy bought it and let it sit another 4 years.
Charlie