Yea! It would be good for car wash, don’t fear that about the paint. You just need to take care of cautions while washing your car with pressure washer:
1. Always keep the nozzle at least 6 inches away from the paint. Don't be tempted to get closer to remove a little spot. If you spray directly into an existing chip and you're too close, it can actually chip the paint. 1400psi is not likely going to cause any problem, though.
2. Never use a straight stream (if the pressure washer supports it). Same reason as above, Keep the stream in a "fan" of about 30 degrees.
3. Don't towel dry after washing with only a pressure washer. Even if you use soap, some dirt will remain and you'll end up with dirty towels and swirl marks.
You may check out www.best-pressure-washer-reviews.com/pr ... stics.html
, It has excellent reviews about the best pressure washers selected on their characteristics.