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Engine Repair in Downtown SLC on Main Street
From a check engine light to a full rebuild, our ASE-certified Downtown SLC techs find the real problem first. Free check engine scan, 12-month / 12,000-mile warranty*.
690 Main St, Salt Lake City, UT 84101 · Get Directions
Mon-Fri 7:30am-6:00pm | Sat 8:00am-4:00pm | Sun Closed ·
- Waiting room
- Free Wi-Fi
- Open Saturdays
- 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 Downtown SLC diagnoses and repairs engines on cars, trucks and SUVs for drivers across downtown and central Salt Lake City, from a misfire or oil leak to a full rebuild. We start with a free check engine light scan, explain what we find, and back engine repairs with our 12-month / 12,000-mile warranty*.
When a check engine light comes on during the commute, our shop is easy to reach: we’re on Main Street just north of 700 South, a block from the 600 South TRAX station, with the 600 South connector to I-15 one block north. Pull in for a free code scan, and if we need the car longer, TRAX gets you back to work.
Engine Repair Services We Offer
Engine diagnostics
Free check engine light scan, then hands-on testing to find the root cause, not just the code.
Engine repairs
Ignition, fuel system, sensors, gaskets, timing components and more, repaired with quality parts.
Oil & coolant leaks
Valve cover, oil pan, head gasket and water pump leaks traced and sealed.
Cooling system
Thermostats, radiators, hoses and water pumps to stop overheating.
Engine rebuilds
Inspection, machining and reassembly to factory specifications when repair isn’t enough.
Preventive maintenance
Oil changes, filters, belts and tune-ups that keep small problems from becoming big ones.
Signs You Need Engine Repair
Most engine problems give you warning first, and catching them early often means a repair instead of a rebuild. Here’s what the common signs usually point to:
- Check engine lightSteady can mean anything from a loose gas cap to a failing sensor. Flashing means an active misfire: stop driving and call us.
- Knocking, ticking or grindingWorn internal parts, low oil or valve train problems.
- Loss of power or hesitationUsually the fuel or ignition system.
- Rough idle or stallingIgnition, fuel or vacuum leaks, often with vibration at a stop.
- Overheating or steamA bad thermostat, water pump, radiator or a coolant leak.
- Hard startingEspecially on cold mornings: the battery, starter, ignition or fuel delivery.
- Fluid spots or burning smellsOil, coolant or other fluids leaking, sometimes onto hot engine parts.
- A sudden drop in MPGFaulty sensors, fuel system problems or worn parts.
- Vibration at speedEngine mounts, misfires or a transmission problem.
- Visible damageCracked hoses, worn belts or loose wiring under the hood.
What your exhaust smoke color means: blue usually means burning oil from worn piston rings or valve seals; white can mean coolant in the combustion chamber from a failing head gasket; black means the engine is running too rich, often a fuel injection or air intake problem.
How Much Does Engine Repair Cost in Salt Lake City?
Engine repair costs range widely, from a sensor or ignition coil to a head gasket or rebuild. The biggest factors are what failed, how much labor it takes to reach, your vehicle’s make and engine, and the parts grade. That’s why we diagnose first. The check engine light scan is free, and we give you an estimate before any repair begins.
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.
Why Choose Master AutoTech Downtown SLC for Engine Repair
Diagnose before we repair
A free scan plus hands-on testing, so you pay for the fix you need and nothing else.
ASE-certified technicians
Every Downtown SLC tech must earn ASE certification within 90 days of joining.
Honest advice
If a repair can wait, we’ll tell you. If it can’t, we’ll show you why.
Utah family business since 1963
Backed by the state’s largest auto repair franchise and our 12-month / 12,000-mile warranty*.
What Our Main Street Customers Say
“They were very busy but happened to be able to work me in. Completed the job in record time and the guy at the front desk, I believe his name was Kelly, was very, very pleasant. Let’s see how the muffler holds up. It was really a good price.”
Sharon Eastman
“Great customer service and quick to complete the job. Mike kept me notified every step of the way and I always felt like my car was in good hands. Prices are very reasonable. Highly recommend”
Ethan Squires
“This was one of the best experiences I’ve had with an automotive shop. Phil was a great guy who really took care of me and Don did great, quick work on my truck. Highly recommend!”
Sasa Dobrijevic
Trust your engine with a master mechanic
Check engine light on? Book a free scan or call (801) 305-3049.
How Often Should Your Engine Be Serviced?
Most engine repairs start as skipped maintenance. Utah’s dry air and temperature swings dry out belts and hoses, and short winter trips are hard on oil. Follow your owner’s manual, and use this as a guide:
| Service | Typical interval |
|---|---|
| Oil & filter change | 3,000–7,500 miles depending on oil type |
| Engine air filter | Every 15,000–30,000 miles, sooner on dusty roads |
| Spark plugs | Every 30,000–100,000 miles depending on plug type |
| Timing belt (if equipped) | Every 60,000–100,000 miles |
| Coolant flush | Every 30,000–60,000 miles |
About Master AutoTech Downtown SLC
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 this downtown location served Salt Lake City as Master Muffler & Brake before the rebrand. Every technician here earns ASE certification within 90 days of joining the team. Meet our team.
You’ll find us on Main Street just north of 700 South, a block from the 600 South TRAX station, with West Temple one block west and State Street one block east. 600 South, one block north, connects downtown with I-15. Look for the big Master AutoTech sign and pull into our lot on Main Street.
Wait in our waiting room with free Wi-Fi, or step out while we work: Sol Agave and Millcreek Coffee Roasters are a short walk up Main Street, The State Room is a block east on State Street, and TRAX stops a block north at 600 South. We take care of drivers from downtown, Central City, the Granary District, Ballpark, Central Ninth and the Avenues 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 Downtown SLC for engine repair from across downtown and central Salt Lake City.
- Downtown Salt Lake City
- Central City
- Ballpark
- Granary District
- Central Ninth
- Liberty Wells
- The Avenues
- Capitol Hill
- Marmalade
- South Salt Lake
- Millcreek
- Bountiful
Mon-Fri 7:30am-6:00pm | Sat 8:00am-4:00pm | Sun Closed
Get Directions · 690 Main St, Salt Lake City
✓ 12-month / 12,000-mile warranty* *Exclusions apply.
✓ Financing available · See options
✓ Free check engine light scan
✓ 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
Part of Master AutoTech Salt Lake City, one of four Master AutoTech shops across the city. See all Salt Lake City shops
Master AutoTech Downtown State SLC
0.6 miles away
1050 S State St
Salt Lake City, UT 84111
Master AutoTech Millcreek
4.5 miles away
3385 Highland Dr
Salt Lake City, UT 84106
Master AutoTech Bountiful
7.3 miles away
1025 US-89
North Salt Lake, UT 84054
Other Services at This Location
Frequently Asked Questions
Visit Master AutoTech Downtown SLC
Master AutoTech Downtown SLC
690 Main St
Salt Lake City, UT 84101
Get Directions
Mon-Fri 7:30am-6:00pm
Sat 8:00am-4:00pm
Sun Closed
Getting here
- From I-15: Take 600 South east into downtown, turn right on Main Street, and we’re just north of 700 South.
- By TRAX: Ride to the 600 South station on Main Street; we’re about a block south.
- From State Street: Head west on 700 South one block to Main Street and turn right.
- Parking: Pull into our lot on Main Street, right under the Master AutoTech sign.



