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Engine Repair in St. George, UT
From a check engine light to a full rebuild, our ASE-certified St. George techs find the real problem first. Free check engine scan, 12-month / 12,000-mile warranty*.
1380 W Sunset Blvd, St. George, UT 84770 · Get Directions
Mon-Fri 8:00am-5:30pm | 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 St. George diagnoses and repairs engines on cars, trucks and SUVs for drivers across St. George, Santa Clara and Ivins, 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 Sunset Boulevard at 1400 West, a short drive from I-15. Pull in for a free code scan and we’ll tell you what it means.
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 St. George?
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 St. George 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 St. George 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 St. George Drivers Say
Trust your engine with a master mechanic
Check engine light on? Book a free scan or call 435-264-8433.
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 St. George
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 Sunset Boulevard shop brings that experience to St. George. Every technician here earns ASE certification within 90 days of joining the team.
You’ll find us on Sunset Boulevard at 1400 West, on the way to Santa Clara and Snow Canyon, a short drive west of I-15. Look for our Master AutoTech sign on Sunset Boulevard and pull into our lot.
Wait in our waiting room with free Wi-Fi, or step out while we work: Perks!, Anasazi Steakhouse and Arctic Circle are a short walk away. We take care of drivers from St. George, Santa Clara, Ivins, Washington and Bloomington 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 St. George for engine repair from across St. George, Santa Clara and Ivins.
- St. George
- Santa Clara
- Ivins
- Washington
- Bloomington
- Hurricane
- Cedar City
Mon-Fri 8:00am-5:30pm | Sat Closed | Sun Closed
Get Directions · 1380 W Sunset Blvd, St. George
✓ 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
Master AutoTech Cedar City
49.3 miles away
590 N Main St
Cedar City, UT 84721
Other Services at This Location
Frequently Asked Questions
Visit Master AutoTech St. George
Master AutoTech St. George
1380 W Sunset Blvd
St. George, UT 84770
Get Directions
Mon-Fri 8:00am-5:30pm
Sat Closed
Sun Closed
Getting here
- From I-15: Take the St. George Boulevard or Bluff Street exit and head west on Sunset Boulevard to 1400 West.
- From Santa Clara: Head east on Sunset Boulevard; we’re at 1400 West.
- Parking: Pull into our lot on Sunset Boulevard; there’s covered parking beside the shop.
