I went through their car wash recently with a friend and it barely cleaned his car at all.
In fact, the wash actually made it worse in some areas of the windshield. The driers hardly worked at all, leaving the majority of his car still wet at the end of the wash. I mean, I know he only paid $6, but nonetheless, it was disappointing.
The only reason I'm not giving them one star is that there was no line to wait in for the wash. Maybe that's because other people have realized how crappy their washes are too.
Do yourself a favor and drive next door to Village Auto Wash, instead. You may have to pony up a bit more cash, but in the end, it's worth it.