Welcome to Performance Unlimited, Inc.

For more than 30 years, Performance Unlimited, a family owned and operated auto repair service, has kept family cars on the road, while also keeping racers in the winner’s circle and classic restorations rolling. From basic maintenance to complex repairs, we have the expertise to make auto ownership safe, reliable and cost effective. Our expert auto-repair technicians are certified and combine extensive and ongoing training with a vast level of experience working with all makes and models – foreign and domestic.

Classic and performance racers and enthusiasts also turn to Performance Unlimited with confidence knowing that we will help them to achieve that winning edge – whether competing on the track, at a car show or for the hearts of car lovers on the road.

Whatever your automotive goals – reliability, financially efficient operation and/or speed and handling – Performance Unlimited offers unlimited performance.

Distinctive Auto Service and Truck Repair
Truck and High Performance Accessories
  • Foreign and Domestic Auto Service and Truck Repair
  • Fleet Vehicle Repair and Maintenance
  • State of the Art Diagnostic Equipment
  • Scheduled Maintenance under Auto and Truck Manufacturers Warranty (Any make, any model)
  • Serving the Greater McHenry Area Since 1982

Our Best Values Are:
  • We drop you off and pick you up so you don't miss important business and family appointments (within 10 miles of our shop located just north of McHenry - Click here for Map and Direction)
  • Family Owned and operated - so we understand what it means when your car or truck fails
  • ASE Certified Technicians - We proudly display our certificates
  • 24,000 mile / 24 month warranty on all provided services
  • Constant Continuing Education means we never fall behind new technologies
  • 24 Point Vehicle Inspection - Ask for one. It’s FREE

Summer Specials:
As soon as Summer gets here we’ll have some specials!!

View Goodyear $60 Tire Rebate (Expires 6/30/15)
VIEW Uo to $506 Rancho Suspension and Shocks Rebate (Expires 6/30/15)
VIEW Up to $100 Dynomax Performance Exhaust Rebates (Expires 6/30/15)


($20 value)
($40 value)
*with non-discounted Oil Change

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