I have cleaned my truck with no issues, that said, my truck has a pretty crappy paint job. I’ve never taken the brush to my wife’s car being concerned that it might be to abrasive for the paint. I could be wrong but I think typical car wash brushes are a little bit softer on the edge of the bristles. I would be cautious with that, you don’t want to end up with spiderwebs scratches all over the cars. But, it might not even be an issue, just something to be aware of.