All states›Smog Check & Emissions Testing Stations›Colorado

Smog Check & Emissions Testing Stations in Colorado

64 of the 4,155 auto repair shops we track in Colorado have smog checks or emissions tests. Full listings for every city are on the Colorado page.

64auto repair shops
31cities
4,155auto repair shops statewide

Not every repair shop is licensed to test emissions, and a map search for a smog check mixes test stations with parts stores and dealerships. Every station here names smog checks or emissions testing in its business name, its listing category or on its own website.

Denver 6

  1. ImportSports Performance

    7667 E Iliff Ave Ste I, Denver, CO 80231

    Smog & emissionsTransmission repairDiesel & truckMuffler & exhaustA/C repairBody & collision
    Call Website All Denver

  2. L & N Diesel Emissions Testing & Repair

    1700 W Mississippi Ave Unit a, Denver, CO 80223

    Smog & emissionsDiesel & truck
    Call Website All Denver

  3. Heavy Diesel Emission Testing - JECO

    1247 E 68th Ave, Denver, CO 80229-7119

    Smog & emissionsDiesel & truckTowingOpen 24 hours
    Call Website All Denver

  4. Jr Auto Repair

    6299 Federal Blvd, Denver, CO 80221-2005

    Smog & emissionsMuffler & exhaustA/C repairFree estimates
    Call Website All Denver

  5. Econo Emissions Testing

    8330 E Colfax Ave, Denver, CO 80220-2111

    Smog & emissions
    Call All Denver

  6. Clear Car Care Emissions

    4665 Paris St, Denver, CO 80239-3117

    Smog & emissions
    All Denver

Littleton 5

  1. Excel Diesel and SUV

    7591 Shaffer Pkwy Unit A, Littleton, CO 80127

    Mon–Fri 8am–5pm, Sat–Sun closed

    Smog & emissionsDiesel & truck
    Call Website All Littleton

  2. Branch Automotive

    6030 E County Line Rd, Littleton, CO 80126-3919

    Mon–Fri 8am–5:30pm, Sat–Sun closed

    Smog & emissionsTransmission repairDiesel & truckA/C repair
    Call Website All Littleton

  3. Air Care Colorado

    10727 Centennial Rd, Littleton, CO 80127

    Smog & emissions
    Call Website All Littleton

  4. Randy's Auto Care

    1059 W Littleton Blvd, Littleton, CO 80120

    Smog & emissionsState inspectionDiesel & truckMuffler & exhaustA/C repairLoaner or shuttle
    Call Website All Littleton

  5. Air Care Colorado

    8494 S Colorado Blvd, Littleton, CO 80126-3957

    Smog & emissions
    Call Website All Littleton

Arvada 4

  1. Air Care Colorado

    5185 Marshall St, Arvada, CO 80002

    Mon–Fri 8am–5:30pm, Sat 8am–1pm, Sun closed

    Smog & emissions
    Call Website All Arvada

  2. Colorado Engine

    5870 W 56th Ave, Arvada, CO 80002

    Smog & emissionsTransmission repairDiesel & truckMuffler & exhaustA/C repairBody & collision
    Call Website All Arvada

  3. Air Pollution Testing

    5530 Marshall St, Arvada, CO 80002

    Smog & emissions
    Call All Arvada

  4. Emissions

    5185 Marshall St, Arvada, CO 80002-4628

    Smog & emissions
    Call All Arvada

Aurora 4

  1. Hannah's Mastertek

    786 Dayton St, Aurora, CO 80010

    Mon–Fri 8:00am–5:30pm

    Smog & emissionsTransmission repairDiesel & truck
    Call Website All Aurora

  2. Air Care Colorado

    10190 E Warren Ave, Aurora, CO 80231

    Smog & emissions
    Call Website All Aurora

  3. Air Care Colorado

    12042 E 30th Ave #1526, Aurora, CO 80010

    Smog & emissions
    Call Website All Aurora

  4. Econo Lube N' Tune & Brakes

    14891 E Colfax Ave, Aurora, CO 80011

    Smog & emissionsState inspectionMuffler & exhaustA/C repairTowing
    Call Website All Aurora

Broomfield 4

  1. 5th Gear Automotive

    7301 W 118th Pl, Broomfield, CO 80020

    Mon–Fri 8am–5pm

    Smog & emissionsTransmission repairDiesel & truckEuropean & import
    Call Website All Broomfield

  2. Doc Automotive

    7140 W 117th Ave, Broomfield, CO 80020-0409

    Mon–Thu 7:30am–5pm, Fri 7:30am–3pm

    Smog & emissionsTransmission repair
    Call Website All Broomfield

  3. Air Care Colorado

    11609 Teller St, Broomfield, CO 80020

    Smog & emissions
    Call Website All Broomfield

  4. Test MY Diesel LLC

    11705 Teller St Ste F, Broomfield, CO 80020

    Smog & emissionsDiesel & truck
    Call Website All Broomfield

Greeley 4

  1. Buck & Doe Auto

    2211 28th St, Greeley, CO 80631

    Mon–Thu 7:30am–5pm, Sun 7:30am–5pm

    Smog & emissionsTransmission repairDiesel & truckMuffler & exhaustA/C repairBody & collision
    Call Website All Greeley

  2. Rocky Mountain Diesel and Auto

    150 E 18th St, Greeley, CO 80631

    Smog & emissionsDiesel & truck
    Call Website All Greeley

  3. Air Care Colorado

    2844 W 30th St, Greeley, CO 80631

    Smog & emissions
    Call Website All Greeley

  4. Auto Doctor Llc

    624 13th St, Greeley, CO 80631-4138

    Smog & emissionsA/C repairLoaner or shuttle
    Call Website All Greeley

Loveland 3

  1. Proformance Diesel and Auto Repair

    1119 S Garfield Ave, Loveland, CO 80537

    Mon–Fri 8am–5pm

    Smog & emissionsDiesel & truck
    Call Website All Loveland

  2. Collins Auto & Exhaust

    541 E Eisenhower Blvd, Loveland, CO 80537

    Smog & emissionsMuffler & exhaustA/C repairFinancingLoaner or shuttle
    Call Website All Loveland

  3. Air Care Colorado

    7001 N Franklin Ave, Loveland, CO 80538

    Smog & emissions
    Call All Loveland

Northglenn 3

  1. Accurate Automotive

    10651 Irma Dr, Northglenn, CO 80233

    MON-FRI: 8:00 AM – 5:30 PM

    Smog & emissionsState inspectionTransmission repairDiesel & truckEuropean & importMuffler & exhaustA/C repair
    Call Website All Northglenn

  2. True Speed

    11450 Huron St # R, Northglenn, CO 80234

    Smog & emissions
    Call Website All Northglenn

  3. Colorado State Auto Emissions Testing

    1950 E 112th Ave, Northglenn, CO 80233-2201

    Smog & emissions
    Call All Northglenn

Parker 3

  1. Excel Diesel and SUV

    9078 S Woodman Way, Parker, CO 80134-3495

    Mon–Fri 8am–5pm

    Smog & emissionsTransmission repairDiesel & truckMuffler & exhaustA/C repair
    Call Website All Parker

  2. Air Care Colorado

    10199 Parkglenn Way, Parker, CO 80134

    Smog & emissions
    Call Website All Parker

  3. Diesel Repair & Performance

    6250 E Pine Ln Unit B, Parker, CO 80138-2800

    Smog & emissionsDiesel & truckMuffler & exhaust
    Call Website All Parker

Boulder 2

  1. Air Care Colorado

    5655 Airport Blvd #2315, Boulder, CO 80301

    Smog & emissions
    Call Website All Boulder

  2. Lee Myles Auto Care and Diesel Emissions

    6270 Arapahoe Ave #2, Boulder, CO 80303

    Smog & emissionsDiesel & truck
    Call All Boulder

Brighton 2

  1. Brighton Radiator & Mufflers

    267 N Main St, Brighton, CO 80601

    Smog & emissionsDiesel & truckMuffler & exhaust
    Call Website All Brighton

  2. Dynoman Diesel Emissions

    10420 E 106th Ave, Brighton, CO 80601-7103

    Smog & emissionsDiesel & truck
    Call All Brighton

Evergreen 2

  1. Marcy's Automotive

    6949 County Hwy 73, Evergreen, CO 80439

    Mon–Fri 8am–5pm

    Smog & emissionsTransmission repairEuropean & importMuffler & exhaustA/C repair
    Call Website All Evergreen

  2. Dts Diesel Testing Systems Emissions

    30515 Bryant Dr, Evergreen, CO 80439-5765

    Smog & emissionsState inspectionDiesel & truck
    Call All Evergreen

Golden 2

  1. Air Care Colorado

    15335 W 44th Ave #1820, Golden, CO 80403

    Mon–Fri 8am–5:30pm, Sat 8am–1pm

    Smog & emissions
    Call Website All Golden

  2. AC Transmission Golden

    15435 W Colfax Ave, Golden, CO 80401

    Smog & emissionsTransmission repairDiesel & truck
    Call Website All Golden

Longmont 2

  1. Romero's Mufflers & Auto Repair

    4 S Main St, Longmont, CO 80501-6214

    Smog & emissionsMuffler & exhaustFree estimates
    Call Website All Longmont

  2. Als Front Range Diesel Emissions

    1115 Bowen Cir, Longmont, CO 80501-6152

    Smog & emissionsState inspectionDiesel & truck
    Call All Longmont

Wheat Ridge 2

  1. Bachman Auto Service & Repair

    5040 Ward Rd Unit A, Wheat Ridge, CO 80033

    Mon–Thu 7:30am–5:30pm

    Smog & emissionsTransmission repairMuffler & exhaustA/C repairFinancing
    Call Website All Wheat Ridge

  2. Performance Wise

    4395 Xenon St, Wheat Ridge, CO 80033

    Smog & emissionsDiesel & truck
    Call Website All Wheat Ridge

Castle Rock 1

  1. Air Care Colorado

    541 Topeka Way, Castle Rock, CO 80104

    Mon–Fri 8am–5:30pm, Sat 8am–1pm, Sun closed

    Smog & emissions
    Call Website All Castle Rock

Collbran 1

  1. Central Service

    1014 High St, Collbran, CO 81624

    Smog & emissionsA/C repairTowing
    Call Website

Colorado Springs 1

  1. Lightning Lube & Emissions

    313 Bonfoy Ave, Colorado Springs, CO 80909

    Smog & emissions
    Call All Colorado Springs

Commerce City 1

  1. Windways Diesel Emissions

    4940 Oneida St, Commerce City, CO 80022

    Smog & emissionsDiesel & truck
    Call Website All Commerce City

Dacono 1

  1. Air Care Colorado

    5222 Silver Peak Ave #8809, Dacono, CO 80514

    Mon–Fri 8am–5:30pm, Sat 8am–1pm, Sun closed

    Smog & emissions
    Call Website All Dacono

Englewood 1

  1. Specialized Preferred Auto

    2505 W Hampden Ave Ste A, Englewood, CO 80110-1999

    Smog & emissionsTransmission repairMuffler & exhaustA/C repair
    Call Website All Englewood

Fort Collins 1

  1. Houska Automotive

    899 Riverside Ave, Fort Collins, CO 80524-3234

    Mon–Fri 7:30am–5:30pm

    Smog & emissionsTransmission repairDiesel & truckMuffler & exhaustA/C repairFinancingLoaner or shuttle
    Call Website All Fort Collins

Fort Morgan 1

  1. Cyclone Diesel & Auto Repair

    210 E Burlington Ave, Fort Morgan, CO 80701

    Mon–Fri 8am–5pm

    Smog & emissionsDiesel & truckMuffler & exhaust
    Call Website All Fort Morgan

Henderson 1

  1. Rocky Mountain Diesel Emissions

    9999 Brighton Rd, Henderson, CO 80640-8627

    Smog & emissionsState inspectionDiesel & truck
    Call All Henderson

Hesperus 1

  1. Eclipse DOT

    7633 Co Rd 100, Hesperus, CO 81326

    Smog & emissions
    Call Website

Mead 1

  1. 5250 Performance

    3987 S Valley Dr, Mead, CO 80504-9320

    Mon–Fri 9am–5pm

    Smog & emissions
    Call Website All Mead

Morrison 1

  1. Mountain Air Diesel Emissions

    19356 Goddard Ranch Ct, Morrison, CO 80465

    Smog & emissionsDiesel & truck
    Call Website All Morrison

Peyton 1

  1. Falcon Auto Repair & Tire

    14195 US-24, Peyton, CO 80831-8407

    Mon–Fri 8am–5pm, Sat–Sun closed

    Smog & emissionsTransmission repairMuffler & exhaust
    Call Website All Peyton

Sheridan 1

  1. Air Care Colorado - Sheridan

    2802 W Mansfield Ave, Sheridan, CO 80110

    Smog & emissions
    Call Website All Sheridan

Silverthorne 1

  1. High Country Auto Specialists

    150 13th St #1, Silverthorne, CO 80498

    Smog & emissionsTransmission repairDiesel & truckA/C repair
    Call Website All Silverthorne

United States Air Force Academy 1

  1. JS Automotive Newport NH

    472 Sunapee St, United States Air Force Academy, CO 03754

    Mon–Fri 8:00am–5:00pm, Sat closed, Sun closed

    Smog & emissionsState inspectionDiesel & truckA/C repairFinancingTowing
    Call Website All United States Air Force Academy
Bring your registration renewal notice. States that require emissions testing usually print the type of test on it. In California, a notice that says “STAR station required” means only a STAR-certified station can do the check, and test-only stations check cars but do not repair them.

Also in Colorado

Good to know

How much does a smog check cost?

Prices depend on the state and the station. In California a smog check usually costs about $30–70 plus the state certificate fee; in states that run their own emissions programs the fee is often a flat amount set by the state.

What happens if my car fails the emissions test?

You get a report with the reason for the failure, and the car needs repairs before a retest. Many states give a free or discounted retest within a set number of days, and some offer repair assistance or waivers when repair costs pass a limit.