Welcome to Sigmund Auto Service
Premium Automotive Service in O'Fallon, MO
If you’re looking for auto repair in O'Fallon, MO, you’ve found us. Here at Sigmund Auto Service we work hard to earn your trust and loyalty. We know how important it is to find a O'Fallon car service you can rely on, so your satisfaction is our top priority each and every day.
Our professional automotive service offers you years of combined expertise from our well-trained technicians. We treat our auto repair professionals well because we value their skill and can-do attitude. We know our team sets us apart, saving you time and money, not to mention worry. When it comes to auto repair in O'Fallon, we are totally confident that Sigmund Auto Service is the best option in town!
Sigmund Auto Service
511 Civic Park Dr
O'Fallon, MO 63366-1653
(636) 272-3388
Mon-Thu: 8am-5pm
Friday: 7am-4pm
Sat-Sun: Closed





Sigmund Auto Service
511 Civic Park Dr
O'Fallon, MO 63366-1653
(636) 272-3388
Mon-Thu: 8am-5pm
Friday: 7am-4pm
Sat-Sun: Closed





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Why Choose Sigmund Auto Service

For years Sigmund Auto Service has been there for the people of O'Fallon. We love what we do, and that basic fact fuels our business. We are dedicated to our customers, and that’s why they stick with us—the best auto repair O'Fallon has to offer.
Sigmund Auto Service was founded on the basic idea that everyone deserves respect. It is our mission to treat each person that comes through our door with dignity and sensitivity. We believe this attention to detail has paid off by providing us with our loyal, friendly family of customers. That’s what makes Sigmund Auto Service the best car service in O'Fallon!
- 12 Month/12,000 Mile Warranty
- Trained Automotive Technicians
- Serving O'Fallon, MO
The Absolute Best Car Service in O'Fallon, MO
What sets Sigmund Auto Service apart from all of the others in O'Fallon, MO?
Trust: When it comes to auto repair in O'Fallon, MO, it’s all about earning loyalty and trust by doing our very best every day. We are determined to earn and keep your trust.
Talent: At Sigmund Auto Service, you can rest easy knowing that our highly-skilled, experienced auto service professionals are handling your car. Our technicians bring years of experience, skill, and education to the O'Fallon auto repair table.
Time: We take the time we need to provide you with top quality car service in O'Fallon, MO, and we take the time to talk to you about what that means. We listen to you so we understand your needs and goals for your auto repair.
Recently Serviced Vehicles
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2014 GMC Sierra 1500
Mileage168,672Service Date8/18/2026Services Performed- CONDENSER – Remove & Replace – V8 w/o Auxiliary Battery – [Includes: R&I Air Cleaner.] – [DOES NOT include Air Conditioning System recover, evacuate and/or recharge.]
- Service air conditioner. Check condition of all belts and lines. Evacuate and recharge with reclaimed R-134. Test system performance.
CURT R. gave our service a 5 star review on 8/19/2026 -
2014 Mazda 6
Mileage300,646Service Date8/14/2026Services Performed- Remove wheel from vehicle. Demount tire and clean rim. Remount tire. Computer spin balance. Re install wheel to vehicle and torque lug nuts to manufacturer's specifications.
- NOISE SOUNDS LIKE IT IS COMING FROM THE FRONT STRUTS, RIGHT FRONT TIRE IS COMING APART ON THE INSIDE SIDEWALL.
- TIRE FEE
- TIRE DISPOSAL
MARK G. gave our service a 5 star review on 8/15/2026 -
2017 Hyundai Elantra
Mileage154,385Service Date8/13/2026Services Performed- Remove wheel from vehicle. demount tire and clean rim. Remount tire. Computer spin balance. Re install wheel to vehicle and torque lug nuts to manufacturer's specifications.
- TIRE FEE
- TIRE DISPOSAL
- Replace front brake pad linings. Check front brake disc rotor condition. Clean and lubricate brake calipers and slide mechanisms. Check and fill brake fluid. Bleed air from system. Road test vehicle.
SUZANNE H. gave our service a 5 star review on 8/14/2026 -
2023 Chevrolet Traverse
Mileage36,487Service Date8/11/2026Services Performed- Remove wheels from vehicle. Inspect brakes.Rotate tires.Reinstall wheels to vehicle and torque lug nuts to manufacturer's specifications.
- Changed Motor Oil & Replaced Oil Filter, Added full synthetic motor oil, Lube Chassis, Check all Fluid Levels,checked psi in all tires, Checked air filter
TIM S. gave our service a 5 star review on 8/12/2026 -
2009 Ford Flex
Mileage86,531Service Date8/11/2026Services Performed- Changed Motor Oil & Replaced Oil Filter, Added full synthetic motor oil, Lube Chassis, Check all Fluid Levels,checked psi in all tires, Checked air filter
TERRY B. gave our service a 5 star review on 8/12/2026 -
2014 Toyota Highlander
Mileage128,352Service Date8/10/2026Services Performed- safety and emission inspection
KEVIN K. gave our service a 5 star review on 8/11/2026 -
2018 Chevrolet Traverse
Mileage74,846Service Date8/10/2026Services Performed- Service air conditioner. Check condition of all belts and lines. Evacuate and recharge with reclaimed R-1234YF. Test system performance.
MARY LOU R. gave our service a 5 star review on 8/11/2026 -
2022 Buick Envision
Mileage42,279Service Date8/7/2026Services Performed- emission inspection
JOHN G. gave our service a 5 star review on 8/8/2026 -
2015 Buick Enclave
Mileage123,809Service Date8/5/2026Services Performed- EVAPORATIVE CANISTER PURGE SOLENOID – Remove & Replace
- SCANNED FOR CODES HAS CODE FOR EVAP PURGE DURING A NON PURGE EVENT, TESTED SYSTEM AND FOUND EVAP PURGE VALVE IS LEAKING. TEST DROVE VEHICLE STEERING WHEEL SHAKES AT 45 MPH OR HIGHER, RIGHT FRONT TIRE HAS A CORD BROKE IN IT CAUSING THE SHAKE. NEED RIGHT FRONT TIRE.
- Changed Motor Oil & Replaced Oil Filter, Added full synthetic motor oil, Lube Chassis, Check all Fluid Levels,checked psi in all tires, Checked air filter
MARY G. gave our service a 5 star review on 8/6/2026 -
2013 Chrysler Town & Country
Mileage71,566Service Date8/4/2026Services Performed- Remove wheels from vehicle. Inspect brakes.Rotate tires.Reinstall wheels to vehicle and torque lug nuts to manufacturer's specifications.
- Changed Motor Oil & Replaced Oil Filter, Added full synthetic motor oil, Lube Chassis, Check all Fluid Levels,checked psi in all tires, Checked air filter
JUSTIN K. gave our service a 5 star review on 8/5/2026 -
2018 Nissan Rogue
Mileage108,710Service Date7/27/2026Services Performed- Remove and reinstall four wheels and rear brake drums if applicable to inspect brake condition. Inspect entire system for leaks. Lining remaining is: Front ( 50 %) Rear ( 80 %)
- emission inspection
- Changed Motor Oil & Replaced Oil Filter, Added full synthetic motor oil, Lube Chassis, Check all Fluid Levels,checked psi in all tires, Checked air filter
RODNEY W. gave our service a 5 star review on 8/2/2026 -
2022 Mazda CX-5
Mileage40,005Service Date7/29/2026Services Performed- emission inspection
LUANNE W. gave our service a 5 star review on 7/30/2026


