I bought a new electric pressure washer back in January. I went with the
Sun Joe SPX3000 purchased on amazon. Also bought a foam cannon. Got it all for under $200.
I was a little hesitant because everyone complains that electrics don't have enough pressure or flow. But this little guy has kept up with everything I've asked it to do. It has cleaned my patio, front porch, driveway, car, furniture and some odds and ends. It's super quiet, only comes on when you pull the trigger, and has plenty of PSI to accomplish the job.
I'm not starting my own pressure washing business, nor do I want to store, up-keep, or use a loud, large, and cumbersome gas pressure washer. This thing rolls and stores perfectly in my garage. No need for anything more if you're just washing the car IMO.
The one upgrade I would suggest is to get a longer hose. It comes with a 20 footer, but one more click on amazon gets you the
50 footer and makes walking around the car a whole lot easier.