Coming soon
Coming soon: Madison Automotive is becoming Master AutoTech Rexburg. Until the change, the shop is open as Madison Automotive. Call 208-228-5635 or visit 1334 N Yellowstone Hwy, Rexburg.
Engine Repair in Rexburg, ID
From a check engine light to a full rebuild, our ASE-certified Rexburg techs find the real problem first. Free check engine scan, 24-month / 24,000-mile warranty*.
1334 N Yellowstone Hwy, Rexburg, ID 83440 · Get Directions
Mon-Fri 8:00am-5:00pm | Sat Closed | Sun Closed ·
- Waiting room
- Free Wi-Fi
- Walk-ins welcome
24-month / 24,000-mile warranty* on parts & labor
Madison Automotive · becoming Master AutoTech Rexburg
*Exclusions apply. Ask your service advisor for full warranty terms.

- ASE Certified Technicians
- Best of State Utah
- Top Workplaces
- Locally Owned in Rexburg
Master AutoTech Rexburg diagnoses and repairs engines on cars, trucks and SUVs for drivers across Rexburg, Sugar City and the Upper Valley, 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 24-month / 24,000-mile warranty*.
When a check engine light comes on during the commute, our shop is easy to reach: we’re on North Yellowstone Highway just south of East Moody Road, a short drive from US-20. 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 Rexburg?
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 and Surepay.
Why Choose Master AutoTech Rexburg 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 Rexburg 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.
Rexburg’s hometown shop
Backed by Utah’s largest auto repair franchise and our 24-month / 24,000-mile warranty*.
What Rexburg Drivers Say
“We had a great experience. We felt like we were treated well and not trying to be oversold on anything. Normally we have an overwhelming experience with mechanics, but we didn’t here. Very professional and not an expensive job like we were anticipating.”
Danielle Thompson
“Madison Automotive is amazing to work with! They always listen to my concerns and make sure I understand everything when explaining things to me. Definitely recommend this amazing team!”
Annika Smith
“I’ve had them work on both of my vehicles and they’ve been great. They fixed what was needing fixed and didn’t try to sell me on a bunch of other things.”
Morgan Ricks
Trust your engine with a master mechanic
Check engine light on? Call 208-228-5635 to book a free scan.
How Often Should Your Engine Be Serviced?
Most engine repairs start as skipped maintenance. Idaho’s dry air and big temperature swings dry out belts and hoses, and short trips on below-zero winter mornings are hard on oil and batteries. 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 Rexburg
We’re a locally owned shop that treats every vehicle like it belongs to a neighbor. This North Yellowstone Highway shop has served the Upper Valley as Madison Automotive for more than a decade and is joining Master AutoTech, Utah’s largest auto repair franchise. Every technician here earns ASE certification within 90 days of joining the team.
You’ll find us on North Yellowstone Highway just south of East Moody Road, a few minutes from US-20 Exit 337. Pull into our lot right out front.
Wait in our waiting room with free Wi-Fi while we work, or run a quick errand at the nearby Walmart. We take care of drivers from Rexburg, Sugar City, Rigby, St. Anthony and Teton 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 Rexburg for engine repair from across Rexburg, Sugar City and the Upper Valley.
- Rexburg
- Sugar City
- Rigby
- St. Anthony
- Teton
- Ririe
- Menan
- Newdale
Mon-Fri 8:00am-5:00pm | Sat Closed | Sun Closed
Get Directions · 1334 N Yellowstone Hwy, Rexburg
✓ 24-month / 24,000-mile warranty* *Exclusions apply.
✓ Financing available · See options
✓ Free check engine light scan
✓ Get rewards in the Master AutoTech app
Nearby Master AutoTech Locations
Master AutoTech Chubbuck
73.7 miles away
4534 Yellowstone Ave
Chubbuck, ID 83202
Master AutoTech Pocatello
76.2 miles away
105 N 4th Ave
Pocatello, ID 83201
Other Services at This Location
Frequently Asked Questions
Visit Master AutoTech Rexburg
Master AutoTech Rexburg
1334 N Yellowstone Hwy
Rexburg, ID 83440
Get Directions
Mon-Fri 8:00am-5:00pm
Sat Closed
Sun Closed
Getting here
- From US-20: Take Exit 337 and head south on North Yellowstone Highway; we’re on the left just past East Moody Road.
- Parking: Pull into our lot in front of the shop on North Yellowstone Highway.




