J&Z's Sonoma Smog Center at Sonoma, CA 95476, 380 Soscol Avenue, Napa, California.

The customer service there is great!! It is a one stop shop, not only did my car pass smog inspection, but I received my registration stickers then and there. I avoided an extra trip to the dmv and I was ready for the weekend. By far the best smog shop in the area. I commend Juma's Automotive for the great quality and customer service. Also intrigued by their willingness to assist the customer. Not to mention there's a friendly dog that was just so much fun. I highly recommend this location to anyone in need of a smog, they're extraordinary!!