GPS is not accurate, showing signs of pointing in the wrong direction and...

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GPS is not accurate, showing signs of pointing in the wrong direction and incorrect location when connected to Android Auto.

I looked for a solution and tried to find the root of the problem for a long time.

Finally found that Disabling Android auto's location permissions made this problem go away.

So I'd like to know why. And why is it like that?

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I frequently drive in areas where there is no GPS signal, such as under expressways, tunnels, and tall buildings. Therefore, I give additional advice for people who often have this problem.
And yes, it really uses a lot of battery.