JG's Diesel Emissions Testing LLC

No trouble, great service! So, I'm new to Colorado and I had no idea that diesel emissions had to be done through a private business. I made an appointment here and the service was quick, prompt, and friendly! Got my 2500 Duramax on the road and DMV had a Colorado title for me that evening. It may take a few extra days depending on when you go in but I already had other business at DMV so I figured I'd try.

Look no further...you have found the best diesel emissions tester in the area. Jim, the owner, has great customer service, takes great care and does the work himself. Not to mention that his prices are the lowest available.

​JG went absolutely above and beyond for me today! I showed up right at closing with a tricky right-hand drive car that ended up dying in the bay. Not only did JG stay to try and jump it with his own vehicle, but he also helped me push it to a safe parking spot for the night and even offered me a ride home. He is incredibly nice, professional, and truly cares about his business. Unmatched customer service!

Highly recommend JG’s. Jim is a true professional who cares. Fast and super friendly. Thank you Jim!

Great experience with JG’s! Very friendly, fast, and painless. Brought my 1990 Ford for emissions and the test was done within 30 minutes. Of course I was there longer because I’m a talker but awesome guy and a great experience. I will definitely be returning for future emissions.