Emissions Testing in South Salt Lake, UT

Master AutoTech South Salt Lake performs Salt Lake County emissions testing and emissions repairs so drivers across South Salt Lake, Millcreek and central Salt Lake County can renew their registration on time. If your vehicle doesn’t pass, we diagnose why, fix it and retest it in the same shop.

Salt Lake County drivers need an emissions test to renew registration, and our shop makes it easy: we’re on State Street just north of 3900 South. Most tests take under half an hour, and we’re open Saturdays too.

Every South Salt Lake technician is required to earn ASE certification within 90 days of joining our team.

Salt Lake 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:

1. Bring your vehicle and registration renewal notice. The test is tied to your VIN and plate.
2. 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.
3. Results are sent electronically. A pass is reported to the state so you can renew online.
4. If it fails, we explain why. You’ll get the codes and our recommendation before any repair.

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.

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.

• 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

The Salt Lake Valley’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 Salt Lake County air cleaner and usually improves fuel economy too.

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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, and our giant mascot sign has watched over State Street for years. Every technician here earns ASE certification within 90 days of joining the team. Meet our team.

You’ll find us on State Street just north of 3900 South, with Main Street a few blocks west and 300 East a few blocks east. I-15 is a short drive west, and the Meadowbrook TRAX station is about half a mile away on 3900 South. Look for the red storefront and the giant sign, and pull into our lot on State Street.

Wait in our waiting room with free Wi-Fi, or step out while we work: Astro Burgers is next door and there’s more food at the 3900 South corner. We take care of drivers from South Salt Lake, Millcreek, Murray, Meadowbrook and Holladay every day.

Drivers come to Master AutoTech South Salt Lake for emissions testing from across South Salt Lake, Millcreek and central Salt Lake County.

• South Salt Lake
• Millcreek
• Murray
• Meadowbrook
• Holladay
• Central Salt Lake City
• West Valley City
• Taylorsville