Does a Parked Car Still Need Coverage?

Short answer: if the car is registered and could be driven, yes. The requirement attaches to a vehicle that is on the road, not to how often you actually turn the key.

The registration is the trigger

California ties insurance to registration. Insurers report coverage on registered private-passenger vehicles to the DMV electronically, so a registered car with no policy behind it is visible to the department without anyone being pulled over. A car sitting in your driveway with current tags is, as far as that system is concerned, a car on the road.

The legitimate alternative

If a vehicle genuinely will not be driven, parked or left standing on a public road, the DMV's planned non-operation filing exists for exactly that. It has to be filed in the window the department publishes, and it means what it says — the car cannot sit at the curb.

Two reasons not to drop everything anyway

1. Stationary cars still get damaged. Theft, fire, a falling branch, someone reversing into it. Comprehensive-only coverage exists for that shape of risk, and it costs a fraction of a full policy. Whether a particular carrier offers it on your vehicle is worth asking directly.
2. Gaps follow you. Time without any coverage shows up when you next buy a policy. The saving on a stored car is real but small; restarting after a gap can quietly cost more than you saved.

The version we'd actually recommend

Storing a car for a month or two: keep the policy, ask about a lower-mileage rating. Storing it for a year: file planned non-operation and ask about comprehensive-only. Selling it: keep the policy in force until the sale completes and the DMV transfer notice is filed.

What we would not do is cancel outright and hope. That is the version that produces a DMV letter, a gap in your history, and no protection against the thing that actually happens to parked cars.

Tell us how long it's sitting and we'll price the cheapest structure that still leaves you protected.