Julio is an absolutely phenomenal individual to work with. He's personable. He's intelligible. And best of all: He's exceedingly well informed! While he cannot legally remedy the faults of one's vehicle when attempting to acquire smog certification (thanks Commiefornia!), he can explain in great detail what steps you -- as the owner -- need take to accomplish as much. Through his unmatched expertise and unwavering dedication to his customers, I was able to make the necessary repairs to pass my POS 1996 Jeep Grand Cherokee! Woohoo! Without the selfless assistance of Julio the Brave, I'm afraid my hunk of junk would have never been road ready. And I truly mean that! If you need to smog ANY vehicle, I STRONGLY RECOMMEND that you take it over to Mammoth Smogs and have Julio take a look at it. You wont regret it (unless you are a flaming communist, in which case your opinion is moot and utterly irrelevant...)! Thanks, Julio! You're fantastic! :) read more

Had to smog my friends car at Mammoth. No local place did smog checks. Then I found Mammoth Smog that opened two weeks ago. I figured I was at their mercy as they were the only show in town. Much to my delight I met Julio (never met him before), the owner who not only handled my friends car in timely matter but was pleasant to work with, and responsive to my questions. He was very reasonable and certainly saved time and money by not having to travel out of Mammoth for a smog check. They do service there also, and when I asked if the car needed service, instead of telling me yes and having the ability of charging for a service call, he advised me that the car was in great condition and did not need any work including any oil change. Really appreciated his honestly and transparency. If there is only one place in Mammoth for smog checks we are lucky its Julio. read more

Drove up from Bishop as I refused to use a local technician who's well known for questionable, dishonest practices--no not at Chevron... I had planned to go to the Mammoth Chevron, having called the night before and told what time they would open the following day. When I arrived, surprise, I was told they no longer performed smogs! Urgh!!! As it turns out, it was the BEST thing that could have happened. Chevron gave me Julio's number and he got me right in. What a pleasant end to a bad start. Julio is simply wonderful to deal with. He does not charge any more--a few bucks less actually--and he's fair and extremely knowledgeable. He is a genuinely nice guy. So, pleased with the whole transaction. Go nowhere else and tell everyone you know about Julio, there is no need to go anywhere else locally. read more

Julio is a beast! Got my smog check in the freezing cold on a snowy day! When everyone else was at home warming by the fire this dude was helping us out! I drove up from Bishop because the Chevron here would not smog me because my ride was "to old" and that other place in Bishop we'll let's just say they didn't have the best reputation. I heard about Julio from a friend who said he was awesome and he was spot on. Don't go anywhere else, go with Mammoth Smogs and Julio. You're in good hands and feel like you're with family. This dude has work ethic, honesty, integrity and is just darn likable. read more

Julio is awesome. The smog machine was offline due to a phone issue the last couple days and Julio was amazing by calling me the minute it came back up. He was great explaining the process and showing how it's done. He even did a free pre-test since my car is older so I wouldn't be wasting money if it wasn't going to pass. Great experience, great customer service. read more

Julio is the best! Went down to his shop and he was about to go to lunch but instead had a friend get him something so that he could help me out and smog my car. Awesome of him because I had limited time to get things done that day. He explained everything about the test to me and made it quick and easy for me. I would recommend him to anyone! Great Local Business! read more

Julio did everything he could to help me out with smogging my 1999 Jeep Grand Cherokee. I was having an issue with the computer and he walked me through the steps I needed to take to fix the problem. He's a great guy who knows his stuff and I would recommend Mammoth Smogs to anyone needing a smog in the Eastern Sierra. read more

If you need to get a smog done, this is the place to go to. Julio is the best and reliable person I have ever met, he has exceptional customer service and is always available to serve your needs, I recently did two smog's with him and I would not go anywhere else. Awesome guy. read more

Mammoth Smogs is the best! They are super fast, reasonably priced, and have great customer service. They just moved locations to the front of the industrial park, and it was easy to find. I would highly recommend Julio and Mammoth Smogs to anyone in the area! read more

Julio provides the best customer service I've ever seen at a smog place. He explained the actual process and what he was doing throughout. His prices are fair and he does good work. Favorite part was how personal and fun he was, overall great experience. read more

20 minutes from making a phone call to make an appointment to driving away with the certificate! SO quick, friendly and way more affordable than the other option in Mammoth. Thanks guys! read more

I have had Julio at Mammoth Smogs take care of the smog check on two of my vehicles. He is the best! Very efficient, easy to work with and reasonably priced. I highly recommend him! read more

This place rocks....Always super friendly, Super Fast. I wouldn't take my car anywhere else. Julio will tell you like it is and not screw you over like some of those other places. read more

Very quick easy service!!! He is a little off the beaten path in the industrial park however it's worth it. Best price in town and you don't need an appointment. read more

Got my older vehicle smogged today. I was a customer in Mammoth and I'm stoked he's in Bishop now. Super Cool Dude! Thanks Julio, you're our smog guy. read more

Julio made the entire process very simple and pleasant, from a same day appointment to the affordable price we were happy the entire time.

Great service. Julio was quick, super friendly, with reasonable rates. I'll be sending all my friends & family to him from now on. Thanks!

If you need a vehicle smogged this is the place to go! Great customer service! Very pleased! Good price and great service!

I had an I believe 330 appointment got there and was out of there by 4 easy very professional