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Emissions Testing in Clearfield, UT
Davis County emissions tests plus repair and retest in one shop, so Clearfield drivers can renew registration without the runaround. Walk-ins welcome.
239 E 200 S, Clearfield, UT 84015 · Get Directions
Mon-Fri 8:00am-6:00pm | Sat Closed | Sun Closed ·
- Waiting room
- Free Wi-Fi
- Walk-ins welcome
- Online booking
12-month / 12,000-mile warranty* on parts & labor
Honored at every Master AutoTech location · Serving Utah and Idaho since 1963
*Exclusions apply. Ask your service advisor for full warranty terms.

- ASE Certified Technicians
- Best of State Utah
- Top Workplaces
- Family Owned Since 1963
Master AutoTech Clearfield performs Davis County emissions testing and emissions repairs so drivers across Clearfield, Syracuse and Clinton can renew their registration on time. If your vehicle doesn’t pass, we diagnose why, fix it and retest it in the same shop.
Davis County drivers need an emissions test to renew registration, and our shop makes it easy: we’re on 200 South near Wasatch Elementary. Most tests take under half an hour.
Emissions Services We Offer
Emissions test
Davis County emissions test for registration renewal. Most tests take about 15–30 minutes.
Certified testing station
Emissions repair & retest
If you fail, we find the cause, from oxygen sensors to catalytic converters, repair it and retest.
Pre-test check
Worried about failing? We scan for codes and readiness monitors before you test.
Why Choose Master AutoTech Clearfield for Emissions
Test and repair in one place
No bouncing between a test-only station and a repair shop.
We fix the cause
Codes tell us where to look; testing tells us what actually failed.
Quick weekday tests
Most tests take 15–30 minutes, so a test fits into a lunch break.
Warranty on repairs
Emissions repairs are covered by our 12-month / 12,000-mile warranty*.
Our Certifications
Every Clearfield technician is required to earn ASE certification within 90 days of joining our team.
Current Offers
Buy 3 Tires, Get the 4th Free
On new tires installed at Master AutoTech, October 1 – December 31, 2026. Ends December 31, 2026. See offer details.
More coupons & specials
Browse every current Master AutoTech coupon, plus our ProCare, Certified and Master service packages.
How Davis County Emissions Testing Works
Davis County requires an emissions test for most gasoline and diesel vehicles to renew registration. Your renewal notice tells you whether your vehicle needs one this year. Here’s what to expect:
- Bring your vehicle and registration renewal notice. The test is tied to your VIN and plate.
- We connect to your vehicle’s computer. On 1996 and newer vehicles, the test reads the on-board diagnostic (OBD-II) system and readiness monitors.
- Results are sent electronically. A pass is reported to the state so you can renew online.
- If it fails, we explain why. You’ll get the codes and our recommendation before any repair.
Common Reasons Vehicles Fail Emissions
These are the repairs we see most often after a failed test:
- Check engine light on
- Faulty oxygen sensors
- Failing catalytic converter
- Loose or damaged gas cap
- EVAP system leaks
- Engine misfires from plugs or coils
- Readiness monitors not set after a battery change
Tip: if you recently replaced the battery or cleared codes, drive normally for a few days before testing so the monitors can reset.
How Much Does Emissions Testing Cost in Clearfield?
Emissions test fees are set by the county, so the price depends on where your vehicle is registered. If your vehicle fails, repair cost depends on the cause: a gas cap or sensor is a small repair, while a catalytic converter is a bigger one. We always show you the codes and quote the repair before starting.
Need to spread out the cost? Master AutoTech offers several financing options, including the Goodyear Credit Card (6-month special financing on purchases of $250 or more), the Synchrony Car Care credit card, the 1stMILE Mastercard, Snap Finance, Acima, Surepay and RC Willey financing.
Emissions Repairs We Handle
- Oxygen and air-fuel ratio sensors
- Catalytic converters (see muffler & exhaust)
- EVAP purge and vent valves, hoses and gas caps
- Ignition coils, spark plugs and misfire repair
- EGR valves and passages
- Exhaust leaks ahead of the oxygen sensors
Environmental Responsibility
The Wasatch Front’s winter inversions trap pollution in the valley, and vehicle emissions are a big part of it. Keeping your vehicle in spec isn’t only a registration requirement; it helps keep Davis County air cleaner and usually improves fuel economy too.
What Clearfield Drivers Say
“Jason, Heather, and the whole crew took a deep dive into my old Bronco and found the solution that NO ONE else could. I couldn’t be happier. I drive 45min one-way to bring my vehicles to this shop. Price and service are second to none.”
Daniel Frederick
“Outstanding Service!!! This was my first time taking a car to Master Autotech, and i can safely say that I’ve found my new shop. I tried getting my clutch replaced at a couple other shops first, but they didn’t seem to want the job. (They were) super easy to work with right away, and they made room for my car immediately. I got my new clutch, as well as a couple of other things that I’ve wanted done for a while. I will definitely be going back!”
Gregor Dzierzon
“These guys are incredible! My car sat for two years without running. I was expecting to spend a pretty penny. However, these guys got me back in my car for far below what I thought!! Not only that, but they got my car back to me in literally 24 hours. An oil change and a battery was all that was needed. These guys could’ve been dishonest and charged me for all kinds of things. But they have proven themselves to be honest and professional. Thank you so much Master Auto Tech!!!”
Coral Laroc
About Master AutoTech Clearfield
We’re a family-owned shop that treats every vehicle like it belongs to a neighbor. Master AutoTech started as Master Muffler in 1963 and grew into Utah’s largest auto repair franchise. Every technician here earns ASE certification within 90 days of joining the team. Meet our team.
You’ll find us on 200 South near Wasatch Elementary, a few blocks from the Davis County Library’s Clearfield branch and close to Hill Air Force Base. Look for our red Master AutoTech entrance on 200 South and pull into our lot.
Wait in our waiting room with free Wi-Fi, or step out while we work: Grounds For Coffee, La Choi’s and Mi Rancho are a short walk away. We take care of drivers from Clearfield, Syracuse, Clinton, Sunset and Hill Air Force Base every day.
Download the Master AutoTech app and earn rewards
- Rewards & offersOffers and rewards land right in the app, not in a drawer full of coupons.
- Check-engine alertsSee the actual codes your car is throwing and message the shop about them.
- Maintenance trackingKnow what’s due and what’s overdue, with a weekly report on your vehicle.
- Glove BoxKeep registration, insurance and service records in one place.
How to get rewards: download the free app and your offers and rewards land right in it, ready to use at your next visit. Open the app before your visit to see what’s waiting for you. Book a Master Oil Change and get a free Master Link that connects your car to the app.

Areas We Serve
Drivers come to Master AutoTech Clearfield for emissions testing from across Clearfield, Syracuse and Clinton.
- Clearfield
- Syracuse
- Clinton
- Sunset
- Hill Air Force Base
- Layton
- Roy
Mon-Fri 8:00am-6:00pm | Sat Closed | Sun Closed
Get Directions · 239 E 200 S, Clearfield
✓ 12-month / 12,000-mile warranty* *Exclusions apply.
✓ Financing available · See options
✓ Free check engine light scan before you test
✓ Get rewards in the Master AutoTech app
Buy 3 Tires, Get the 4th Free
Buy 3 tires, get the 4th free, Oct 1 – Dec 31.
Ends December 31, 2026 · Details
Nearby Master AutoTech Locations
Master AutoTech South Ogden
5.1 miles away
1025 E Chambers St
South Ogden, UT 84403
Other Services at This Location
Frequently Asked Questions
Visit Master AutoTech Clearfield
Master AutoTech Clearfield
239 E 200 S
Clearfield, UT 84015
Get Directions
Mon-Fri 8:00am-6:00pm
Sat Closed
Sun Closed
Getting here
- From I-15: Head east into Clearfield and follow 200 South to 239 East.
- Parking: Pull into our lot on 200 South, in front of the red entrance.



