I've been going to Nate's Smog for several years. He smogs my diesel truck, as well as my other cars. He has two smog machines so he keeps things moving by smogging two cars at a time. Nate's always been very friendly and professional, and he really hussles to reduce the wait time. I'm usually in and out in just a few minutes. After your first visit you will automatically receive a discount card in the mail from him when your vehicle is about a month away from the renewal date.