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Gernentz Automotive, LLC
"Car Care You Can Trust"
About Us
Gernentz Automotive, L.L.C. has been built on more than 65 years of hands-on experience, family pride, and a genuine commitment to doing things the right way. What began as a small, local repair shop in Royal, IL has grown into a trusted automotive partner for drivers throughout St. Joseph, Ogden, Gifford, Penfield, and the surrounding communities. As a family-owned and operated business, we believe every customer deserves honest guidance, dependable workmanship, and the peace of mind that comes from knowing their vehicle is in capable hands.
Over the years, we’ve expanded our services to meet the evolving needs of modern vehicles—offering full-service auto and light truck repair, tire services, brake maintenance, diagnostics, collision work, and more. But even as technology changes, our values remain the same: treat people right, fix the problem the first time, and stand behind every repair.
At Gernentz Automotive, we take pride in being a familiar face in the community—one known for transparency, reliability, and a level of care that goes beyond the repair bay. Whether you’re here for routine maintenance or tackling a more complex issue, our skilled technicians are committed to keeping you safe on the road, mile after mile.
Areas Served
Royal, IL | St. Joseph, IL | Ogden, IL | Gifford, IL | Penfield, IL | Homer, IL | Fithian, IL | Armstrong, IL
Our Professional Associations
- National Federation of Independent Business (NFIB)
- Maxxis Authorized Dealer
- Better Business Bureau Accredited Business
Our Certifications
- Certified
- Insured
- Bonded
What We Offer
Our Specialties include:
- At Gernentz Automotive, L.L.C., their specialty lies in delivering complete, dependable care for both cars and light trucks—combining the precision of advanced diagnostics with the hands-on craftsmanship of full-service mechanical and collision repair. Whether it’s restoring a vehicle after an accident, fine-tuning engine performance, servicing brakes and suspensions, or keeping tires, batteries, and essential systems in top condition, the team approaches every job with skill, integrity, and a deep commitment to safety. From routine maintenance to complex repairs, Gernentz Automotive prides itself on being the shop drivers can trust for honest guidance, quality work, and long-lasting results.
Our Services include:
- Full-Service Auto & Light Truck Repair: From routine maintenance to major repairs, Gernentz Automotive provides comprehensive care for most makes and models of cars and light trucks. Their skilled technicians handle everything under the hood and under the frame, ensuring your vehicle stays dependable, efficient, and ready for the road.
- Collision Repair & Body Work: Accidents happen—but Gernentz Automotive is there to restore your vehicle with precision. Their collision repair services include structural work, dent repair, panel replacement, and refinishing. The goal is simple: return your car to its pre-accident condition with quality craftsmanship you can trust.
- Brake Services: Safety starts with reliable brakes. Whether it’s pads, rotors, calipers, or full-system service, Gernentz Automotive offers thorough brake inspections and repairs to keep your stopping power strong.
- Tire Services (Repair, Rotations, Mounting & Balancing): From fixing punctures to installing new tires, the team ensures your vehicle is riding safely and smoothly. Rotations and precision balancing help extend tire life and improve handling, giving you confidence on every drive.
- Oil Changes & Preventative Maintenance: Regular oil changes are the foundation of a healthy engine. Gernentz Automotive provides quick, quality oil changes alongside routine maintenance checks to keep your vehicle running clean, cool, and efficient.
- Air Conditioning & Heating Repair: When temperatures rise or fall, your comfort matters. The shop services A/C and heating systems—from refrigerant charging to component replacement—so your cabin stays comfortable year-round.
- Tune-Ups & Engine Optimization: If your vehicle feels sluggish or less fuel-efficient than usual, a tune-up can bring it back to life. Gernentz Automotive inspects and replaces key components like spark plugs, filters, and ignition parts to restore smooth performance.
- Suspension & Steering Repair: For a smooth, controlled ride, the health of your suspension system is essential. The team diagnoses and repairs shocks, struts, bushings, ball joints, and steering components to eliminate shaking, bouncing, or uneven tire wear.
- Advanced Diagnostics: Modern vehicles require modern solutions. Using advanced diagnostic equipment, the shop pinpoints electrical and mechanical issues accurately—saving you time, money, and guesswork.
- Battery Testing & Replacement: Whether your car won’t start or your battery is showing signs of weakness, Gernentz Automotive provides reliable testing and replacement to ensure dependable starts in every season.
Our Brands include:
- AC Delco Professional Service Center
- Interstate Batteries
- Sea Foam
- Good Year
- Maxxis
- Kumho
- FS Lubricant
- AND MORE
Our Products include:
- Tires
- Batteries
- Wiper Blades
- Ice
- Candy
- Chips
- Soda
Testimonials
On 1/24/2026
samia woodward
had this to say:
I only wish I had known about this shop 6 years ago. Truly has been a God send. It takes a while to get in, but it's well worth the wait! They always know what they are doing and they do it with excellence!
On 1/16/2024
jason williams
had this to say:
Great place, friendly people
On 12/15/2023
Anita Lieb
had this to say:
had a flat tire, and it was fixed promptly and reasonable.
On 3/10/2023
Deb Siuts
had this to say:
They know what they are doing, do a great job, are kind, and all around great people! Highly Recommend!
Testimonial written by Deb Siuts on this site.
On 12/29/2022
Michelle R Halley
had this to say:
Excellent service. Saved us $4500 compared to the shady Chrysler dealership in Champaign.
Contact Us
Gernentz Automotive, LLC
102 E. Main St. Royal, IL 61871
Phone: (217) 583-3200
Email: gernentzautomotive
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Payment Types Accepted
Debit & Credit Cards, Checks
Our Hours
Holiday Hours May Vary. Please Call For Details.
Monday: 8:00 AM - 5:00 PM
Tuesday: 8:00 AM - 5:00 PM
Wednesday: 8:00 AM - 5:00 PM
Thursday: 8:00 AM - 5:00 PM
Friday: 8:00 AM - 5:00 PM
News
From oil changes to major repairs, Gernentz Automotive LLC is your one-stop shop for dependable auto care 🚗🔧 Our skilled technicians service most makes and models of cars and light trucks, handling everything under the hood and under the frame. You can count on us to keep your vehicle running efficiently, safely, and road-ready every mile of the way.#GernentzAutomotive #FullServiceAuto #LightTruckRepair #AutoCareExperts #LocalAutoShop
Keep your car running smoothly with a quick and reliable oil change at Gernentz Automotive! Our expert team ensures your vehicle stays in top condition with high-quality oil and professional service. Stop by today for a fast, efficient oil change you can trust!
Keep your vehicle running smoothly with tire rotations, mounting, and balancing at Gernentz Automotive! Regular maintenance ensures better performance, increased tire life, and improved safety. Schedule your appointment today and let our experts take care of your tires!
Accidents happen, but you can count on Gernentz Automotive for top-quality collision repair! We restore your vehicle to its pre-accident condition with expert craftsmanship and fast service. Contact us today for a free estimate!
Keep your truck running strong with expert light truck repair & maintenance at Gernentz Automotive! From routine service to major repairs, we’ve got you covered with quality workmanship and reliable service. Call today to schedule your appointment!
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