How many gallons of water does car manufacturers use to pre-wash new cars before putting on primer?

For each new car.
Of course, I think they need to wash the car after painting it also, don’t they?

Also how many new cars are manufactured each day, around the world?

Does anyone know?
I did not know that. But I do dare assume they use huge amounts of water to wash off the chemicals before putting on the paint?
Please, educate me on this issue.
I have heard many different stories.

They are not washed with water. They are chemically cleaned in dipping tanks.

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