Horrible customer service. Charged me the $28 and failed my car because the plug was slightly covered by a unit for the tow package. I explained I could remove so he could plug in and he said it was there policy to simply FAIL and mark tampered. Wanted full price AGAIN to actually plug it in. He was incredibly rude and his boss Eric over the phone was not much help either but did finally agree to test for another $17. So $45 total for the smog. What a joke. Will steer clear of this place in the future.