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Map of Mechanics in Janesville

7 pinned locations · open the full MechanicRank map →

All Auto Repair and Mobile Mechanics in Janesville

7 independent businesses in our directory.

Getting a Car Fixed in Janesville

Independent shops in Wisconsin usually charge $90 to $130 an hour for labor, which is below the national average. A quote is the book time for the job times that rate, plus parts. At Wisconsin rates, a spark plug replacement runs about $110 to $420 and an AC recharge runs about $135 to $395 for a midsize car.

Of the 7 Janesville listings that post their hours, 3 open on Saturday and 1 on Sunday. 4 open before 8 AM on weekdays, which helps if you need to drop the car off before work.

4 businesses in Janesville have at least 15 reviews, enough for a rating to mean something, and 3 of those hold 4.5 stars or better. Half of them have 129 or more reviews. A shop with a long history and a 4.6 is a safer call than a perfect 5.0 from a handful of people.

For work a general shop may turn away, Janesville has 1 diesel specialist and 2 heavy duty and fleet shops. Call ahead with the year, make and model so you do not waste a trip.

Wisconsin has no safety inspection for passenger cars. Vehicles kept in Kenosha, Milwaukee, Ozaukee, Racine, Sheboygan, Washington and Waukesha counties need an emissions test every other year before plates can be renewed. Model years 1996 and newer are covered, and a test is also needed within 45 days of some title changes. Details are on the Wisconsin Department of Transportation, Division of Motor Vehicles site. A shop cannot do repairs the customer has not approved, and it must write up a signed repair order before work that may cost more than $50. The shop must return replaced parts if the customer asks before the repair starts. Read the rule.

Owning a Car in Janesville

13Days a Year at 90°F or Hotter
148Nights a Year at or Below Freezing
37Inches of Rain a Year
37Inches of Snow a Year
22Minute Average Commute
1.8Cars per Household
6%Households With No Car
80%Drive to Work Alone

Lows drop to freezing on about 148 nights a year. Cold is when a weak battery finally fails, because a cold engine takes more power to turn over. Janesville averages 37 inches of snow, and road salt eats brake lines, exhaust and the underside of the car. Rinse the underbody through the winter and have the brake lines looked at whenever the car is up on a lift.

The average commute in Janesville is 22 minutes each way, and 80% of workers drive there alone.

Sources, checked October 13, 2026

  • Weather: NOAA U.S. Climate Normals 1991-2020, station Afton - Janesville Wwtp
  • Households and commutes: U.S. Census Bureau, American Community Survey 2020-2024, Janesville city

Pre-Purchase Inspections in Janesville

Buying a used car in Janesville? PPI Auto, our sister company, sends an inspector to the car for $225 on most cars, pickups and SUVs. That is a 122 point check with a full scan and a road test, and the report comes back the same day. Dealer lot, private seller or auction, it works the same.

The nearest PPI Auto city is Madison, about 33 miles away, and inspectors drive out to Janesville.

Parts of Wisconsin require an emissions test. Ask the seller for the last test report, and if the check engine light is on, walk away until someone has read the code.

Questions About Auto Repair in Janesville

How many auto repair businesses are there in Janesville?

We list 7 in Janesville, WI. That covers mobile mechanics, workshops, diesel and heavy duty specialists, body shops and tire shops. Every one has its own page with the phone number, what they work on and the reviews we have found.

Who is the best rated mechanic in Janesville?

J and S Auto Care Specialists, Inc. currently holds the highest rating in Janesville at 4.8 stars from 65 reviews. J and S Auto Care Specialists, Inc., Freeman Alignment, L.L.C., Midnight Mechanic's are the top three by rating among businesses with a real review history behind them. We rank on the ratings themselves and nobody can pay to appear there.

Are there mobile mechanics in Janesville?

Yes. 3 of the businesses we list in Janesville will travel to you rather than making you bring the car in. That covers most servicing, brakes, batteries, diagnostics and plenty of repairs that do not need a lift.

How much do mechanics charge per hour in Janesville?

Independent shops in Wisconsin usually bill $90 to $130 an hour for labor. The national range is $95 to $140. Dealers charge more. Most quotes are the book time for the job times that rate, plus parts, so ask the shop how many hours it is billing you for.

Does Wisconsin require a car inspection?

Wisconsin has no safety inspection for passenger cars. Vehicles kept in Kenosha, Milwaukee, Ozaukee, Racine, Sheboygan, Washington and Waukesha counties need an emissions test every other year before plates can be renewed. Model years 1996 and newer are covered, and a test is also needed within 45 days of some title changes.

Are any mechanics in Janesville open on Sunday?

Yes. 1 of the businesses we list in Janesville show Sunday hours, including K&J Mobile Auto/Diesel Repair. Call first, because Sunday hours are often short and some only take emergencies.

How do I know a shop in Janesville is trustworthy?

Look at the review count as well as the stars, because five stars from four people tells you very little. None of the 7 listings in Janesville has been claimed yet, so call to confirm hours and what the shop works on. A shop cannot do repairs the customer has not approved, and it must write up a signed repair order before work that may cost more than $50. The shop must return replaced parts if the customer asks before the repair starts. Get the quote in writing before any work starts.

Does it cost more to use a mobile mechanic in Janesville?

Usually not. 3 of the businesses in Janesville come to you, and with no building to pay for, they often charge a bit less than a shop. What they cannot do in a driveway is work that needs a lift or a press, so heavy jobs still go to a shop.

How does winter in Janesville affect my car?

Janesville gets about 148 nights a year at or below freezing and 37 inches of snow. Cold exposes a weak battery, and salted roads rust brake lines and exhaust parts. Test the battery in the fall and rinse the underbody in winter.

Can I get a pre-purchase inspection in Janesville?

Yes. PPI Auto, our sister company, inspects used cars in Janesville for $225 on most cars, pickups and SUVs. The inspector comes to the car, runs a 122 point check and sends the report the same day. Call 951-267-8500 to book.

Mechanics in Nearby Cities

No luck in Janesville? A mobile mechanic from the next town over will often make the trip. See all 201 cities in Wisconsin.

What Car Repairs Cost in Janesville, WI

Typical independent shop prices at Wisconsin labor rates, parts and labor, for a midsize car. Each guide shows the price for your vehicle and what to ask before you pay. See all 91 repair cost guides.

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