-Does the soap dispenser on an (electric) pressure washer create soap suds like a foam lance?
-Which is easier on the car?
-Which should I get?
-Which is better for washing a car?
-Please add which is more effective at washing a car?
Any extra information would be very appreciated!!!! THANKS!!!!
-lets say about, and1800 psi electric pressure washer.
- how does a garden hose use more water than a pressure washer or vice-versa?

A hose with a hand controlled sprayer and a bucket of water and car wash soap , a long with a brush and a few towels set aside and some music , the best . A high pressure wash , are you serious , this will only knock off film and not to much dirt. turn it up or change the valves and your gonna start peeling off paint.
Garden hose will use more water. Suds will depend on the type of soap used. The hose is easier on the car but you might need to use a pressure washer to remove road salt and mud if they are difficult to remove. You are better off using a hose, good quality auto soap and and a soft cloth. Pressure washers are tough on the paint finish if not used properly.