Schedule Service

Auto Services in Walworth, WI

Walworth’s Full-Service Auto Center -- O’Neillz Automotive

Services Available at O’Neillz Automotive

At O’Neillz Automotive, we pride ourselves in being the go-to solution for any automotive problem your vehicle may experience. Our facility comes equipped with multiple vehicle bays and the latest, state-of-the-art tools and parts to ensure your vehicle receives dealership level auto care, at a fraction of the cost. Our services, which are available to all makes and models, include general repair, preventative maintenance, engine light diagnostics, wheel alignment, brake repair, transmission repair, engine repair, and more!* If your vehicle runs into trouble or you have a hard time making it to our shop, we offer towing & roadside assistance and after hours drop-off and pick-up, so your time with us is always convenient. We are also proud providers of the Wisconsin Safety Inspection and Smog & Emissions Test so you can have your vehicle inspected and tested all in one convenient location. Prior to inspection and testing, please make sure you have your driver’s license, proof of auto insurance, and vehicle registration on hand!

*A full list of our services can be found below

Keeping You Covered

We believe that confidence is key, and that is especially true when you’re driving your vehicle. Nothing is worse than having to worry about your vehicle’s performance. We know that out of all the things you need to worry about, your vehicle shouldn’t be one of them. That’s why we created our O’Neillz Warranty Plan, that offers you coverage on all repairs for 24 Months / 24,000 Miles on parts and labor. If you notice a problem with your vehicle after a repair or maintenance visit with us, return to us and we’ll handle the problem at no additional cost to you. When you leave our shop, feel confident knowing that our team has your back.

Visit Us Today!

Is your vehicle in need of its next scheduled maintenance service? Or maybe it has sustained damage and needs repair? Whatever your needs may be, O’Neillz Automotive in Walworth, Wisconsin is here to help. Our team of auto professionals has a full suite of services available to ensure they can handle any problem your vehicle may have with precision and care. Whether you need an oil change or an engine repair, our team is ready and waiting to help! Give us a call at 262-394-5575 and schedule your service with us today! We happily accept walk-in clients and offer same-day service! Our facility is located on 205 Madison Street, just up the street from Heyer Park. We’ll make sure your vehicle returns to its previous level of performance — or better.

We Specialize in a Variety of Auto Repair Services

Standard Maintenance Services

  • Factory Scheduled Maintenance
  • 30/60/90/120K Mile Services
  • DMV Certified Vehicle Inspection & Repairs
  • Computer Diagnostics
  • Oil Changes
  • Tune Ups
  • Filter Replacements
  • Safety & Emissions Inspections
  • Windshield Wiper Blades
  • Fluid Services
  • Trip Inspections
  • Maintenance Inspections
  • Check Engine Light Diagnostics & Repair
  • Brake Repair & Antilock Braking System (ABS) Repair
  • Shocks & Struts Repair
  • Chassis & Suspension Repair
  • Suspension & Steering Repair


  • Transmission Repair & Service
  • Transmission Replacement
  • Driveline Repair & Maintenance
  • Axle Repair & Replacement
  • Clutch Repair & Replacement
  • Transmission Fluid Service
  • Flywheel Repair & Replacement
  • Driveshaft & U-Joint Repair
  • Transmission Flush
  • Differential Diagnosis
  • Differential Rebuild & Service

Engine Services

  • Engine Repair
  • Engine Replacement
  • Engine Performance Check
  • Belt Replacement
  • Hose Replacement
  • Cooling System Repair
  • Radiator Repair & Replacement
  • Water Pump Repair & Replacement
  • Drivability Diagnostics & Repair
  • Fuel Injection Repair & Service
  • Fuel System Repair & Maintenance
  • Ignition System Repair & Maintenance

Tire Services

  • Tire Sales
  • Tire Installations
  • Tire Rotation
  • Tire Balancing
  • Tire Replacement
  • Wheel Alignment
  • Tire Air Pressure Checks
  • Tire Pressure Monitoring System (TPMS) Repair & Service

Heating & Air Conditioner Repair

  • Heating & Cooling System Diagnostics
  • Auto Air Conditioning Repair & Service
  • Heating System Repair & Service
  • Belt Repair & Replacement
  • Compressor Repair & Replacement
  • Evaporator Repair & Replacement
  • Refrigerant Replacement

Auto Electrical Services

  • Electrical System Diagnostics & Repair
  • Alternator Repair & Replacement
  • Starter Repair & Replacement
  • Windshield Wiper Repair
  • Power Lock Repair
  • Power Antenna Repair
  • Power Steering Repair
  • Power Window Repair
  • Power Accessory Repair
  • Light Repair & Bulb Replacements

Exhaust Services

  • Exhaust Repair & Replacement
  • Muffler Repair & Replacement
  • Tailpipe Repair & Replacement
  • Catalytic Converter Repair
  • Exhaust Manifold Repair
  • Exhaust Upgrades

Fleet Services

  • Factory Scheduled Maintenance
  • Preventative Maintenance (PM)
  • Semi & Commercial Truck Repair & Maintenance
  • Pre-Purchase Inspections
  • Fleet Accounts