text: I went here because it was highly rated on yelp. Not a good idea. Everyone mentioned using a coupon so I called and ask how I use a coupon. They said just mention it when you stop in. I arrived within one hour of my phone call and mentioned that I was the caller that asked about the coupon. He did the test and told me that he would deduct the coupon. My receipt for the DMV showed that he deducted the coupon but he didn't give me a credit card receipt because of their credit card scanner I guess cant print them. Well of course when I looked at my credit card online that evening I saw he DID NOT TAKE OFF THE COUPON. I called the next day and asked him to refund my credit card. He tried or pretended to try and then said he could do it. He said I would have to stop in and he would give me cash. So I had to take my time and gas and drive back there to get the $2 he failed to give me to start with. I am sure that most people don't take the time to go back and get the money and that they do this on purpose. My advice is to go to a $10 smog shop not in a repair shop that doesn't require coupons. Don't go here if you expect to get $2 off their already higher price!