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    Al's Front Range Diesel Emissions

    4.7 (3 reviews)

    Services - Al's Front Range Diesel Emissions

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    11 years ago

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    6 years ago

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    10 years ago

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    Air Care Colorado Emissions Testing Center

    Air Care Colorado Emissions Testing Center

    2.4
    (82 reviews)

    From reading reviews prior to arrival my anxiety was spiked, but really it wasn't that bad if you…read morecome prepared to wait armed with patience and a good book. I arrived at 1:15pm on a Thursday and the line was nearly to 30th Ave. At 1:52 I had gone through the ticketing gate and I was 2nd in line for my bay (#5). The waiting bay has 3 chairs and is very narrow. There were only about 3-5 of us in there at a time. The man issuing tickets, Viviana who checked my car in, and the woman who checked me out (camo hoodie) all couldn't have been nicer. It's a pretty thankless and repetitive job, but they were kind, polite, and pretty fast. I was on my way by 2:29. There is an additional 3% fee for credit card payments. Overall, it sucks we have to do this once every 5 years but you have a choice as to how you treat others and how it affects your day. Bring a book and a snack, take a chill pill, and say thank you.

    The sign at the entrance clearly states that you close at 5:30 PM. However, your website indicates…read morethat you may close early if the queue is full. For the past two days, I've attempted to arrive at exactly 5 PM, as I cannot leave work any earlier. Each time, I find the gate closed and the entrance blocked off by cones; your queue is either empty or, like today, had 4 cars waiting in the queue at 5 o'clock. If you are closing at 5 PM, it is essential that you update your signs and website to reflect this accurately. Misleading customers is unacceptable. Your time is not more important than ours, do better!

    Highlands Ranch Emissions Technical Center

    Highlands Ranch Emissions Technical Center

    5.0
    (1 review)

    My beloved car flunked emissions!!! The OBD-II said it was the gas cap, after the "Check Engine"…read morelight appeared. So I went to Auto Zone. $25 for a new gas cap. Got one for $10 and went through emissions testing. FAIL! Aieeeee. I got a 30-day extension for temp tags, but went out of town for two weeks. Came back, and threw myself on the mercy of the DMV. A wonderful, kind, helpful lady named Karen told me that another extension wasn't possible, BUT I could get a FREE DIAGNOSTIC TEST from the State!!! And possibly a one-year waiver! Bite me, dealer who wanted $296. I made an appointment for Friday, which was the earliest available, and also the day my temp tags expired. Ack! I had to bring my failed emissions test paperwork. I was greeted by a very nice lady, checked in, and directed to a spacious waiting room with a TV, magazines, and comfy chairs! I had settled in and was happily reading a magazine, when Mark came in and sat down. He said that the problem, as stated on the paperwork, was the gas cap. I said, nah, it's not the cap. I replaced the cap. He patiently told me that they run a specific test on the cap, and mine failed the test. He then asked where I got it, and I said, "Amazon." He said, that explains it. Told me to go to a reputable auto parts store Mark was AMAZING. He's employed by the CO Dept of Health, and has been a mechanic for 40 years. He explained that Air Care Colorado is a subcontractor for the testing. He also explained that since the State services are free, they can't do repairs etc. He answered ALL my questions, of which there were many. I said that I would never have known about this service if it wasn't for the wonderful DMV agent. He said that they can't (or don't) advertise. They're located right next to the emissions testing place. I asked what would happen if I got a new cap and the car flunked again. He said, "Then you come back and see me." I got a new gas cap, went through the emissions testing again, and PASSED. Dealer had said it might be a valve thing and could cost $1500-5000 to fix. Smh. $30 for a gas cap, and done. I cannot overstate how GREAT this service, and these people (Mark and nice lady) are. If your "Check Engine" light comes on, and/or your car flunks emissions in Southeast metro Denver, this is the place to go. Call for an appointment. I don't think that they take walk-ins.

    Al's Front Range Diesel Emissions - smog_check_stations - Updated June 2026

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