A Test Only Smog Center is differentiated from a Test and Repair Smog Center because the Test Only center does not perform vehicle repairs. For this reason you can be sure that when you come to Henry's Smog you will get an unbiased inspection. We want you to pass the inspection just as much as you do. We have absolutely no motivation to fail you! Here are some tips if you have an older vehicle than 2000 that will make your visit to us more successful.