4 - 5 litres per car ...
For storage of water to be used for gardening and washing that could save you 1000s in the long term
Soap and water
Running the dishwasher typically saves water compared to hand washing dishes, as dishwashers are designed to use water more efficiently.
washing a car
over 9000 roughly...
Nothing
Washing your vehicle at a self serve car wash can save you some money over washing it at an automatic drive thru car wash. To use a self serve car wash you'll need to deposit your coins into the coin mechanism, select your options for what type of wash you want and once the spray nozzle starts to spray soapy water use it to spray your car clean.
To not save water, leave the taps running for your whole life until you die. But that method is not adviced because it will cost you a lot of money and you will be broke very soon. Saving water is very easy. Try these methods and you can save up tpo 100 dollars up to a month. After washing vegetables, use the waters to water the plants. Use rainwater to wash your car. Use the water that you wash your clothes to wash your car. Repair leaks immediately when one is spotted. When brushing your teeth do not leave the water running. Use a mug to gurgle yor mouth instead of drinkng it straight away from the tap.
you can wash it on your lawn, that means your lawn will get watering
How ever much it needs to be sparkly clean! ;)
Yes, Over time the salt in the water will cause the vehicle to rust.