Serving Manitowoc, WI

When others can't fix it, we can

Diagnostic repair Diagnostic check

We at Steffens Auto Service take pride in our diagnostic strategies, as well as diagnosing electrical problems. We are one of the largest independent shops in the area. We work on a large variety vehicles so we need good and update equipment that will save us time and save you money. You can't resolve problems unless you are able to find the problem. With over 80 years of combined experience from our techs, using computer programs that are updated daily and tools that are updated weekly we are able to fix problems. I don't think the Snap On tool man has ever left our shop without a sale.


Since we work on most vehicles and light trucks it takes tons of experience, equipment and information to resolve the old and the new problems. We are up to date on technical service bulletins, recalls and troubleshooting techniques.


You can Trust in your mechanic at Steffens Auto Service, it is something we take pride in. Friends or family refers most of our customers to us.

Full Technical Support Programs and Software

Make sure your vehicle is worked on by Steffens Auto Service. We use scan tools to check your vehicle. If the scan detects something wrong with your vehicle, we will let you know about it.

The best in diagnostic tools

When you visit our shop, your vehicle has access to the best in diagnostic tools. Our top priority is to make sure your vehicle will be safe on the road.

Competitive pricing options

The team at our shop believes in making sure you get the best possible prices for the repairs. We promise competitive pricing to every customer.

Make sure you receive your warranty on any of our services or parts.