Get a decent electric one. You don’t need 3K plus to wash a car. High end range Kranzle as stated before. Low end get a sun joe. Also as stated if you decide on a gas one for more uses(cleaning concrete) get a inline pressure gage to knock that psi down to about 1600-1800 and throw a 40 degree nozzle on it. For the crazy thick foam you will want a gas one though. Or get a electric and change the orifice out in your foam cannon. Hope this helps.