✓ RepairPal Certified
N1009 HWY L
Watertown, WI 53098
View map and get directions
Mon:8:00am to 7:00pm
Tue:8:00am to 7:00pm
Wed:8:00am to 7:00pm
Thu:8:00am to 7:00pm
Call now:
(920) 779-1117

Auto Repair Experience

  • John Mason, Owner
  • Established 2000
  • 2 Auto Repair Mechanics on Staff
  • 2 ASE Certified Auto Technician
  • 24 Years of Car Repair Experience
  • Northside Auto & Truck
  • Northside Auto & Truck
  • Northside Auto & Truck
  • Northside Auto & Truck
  • Northside Auto & Truck
  • Northside Auto & Truck
  • Northside Auto & Truck
  • Northside Auto & Truck


Northside Auto & Truck was established in 2000 by John Mason with the goal of providing honest, convenient, high quality auto repair. Our evaluation of this RepairPal Certified shop confirmed that John and his crew are providing exactly that. Our review of their most recent customers revealed a team of professionals who are providing great customer service. This team was described as polite, fair, knowledgeable, and accommodating. John, the owner, is an ASE Master Technician who holds his staff to the same level of professionalism that he strives to achieve. He provides very high quality shop management and automotive technical training on an ongoing basis for his staff members to help ensure that your experience is a great one. This training, coupled with the necessary automotive tools and computer diagnostic equipment allow them to professionally handle a wide range of repairs. These repairs are backed by a 12-month / 12,000-mile warranty for your peace of mind. Local shuttle service, loaner vehicles, early bird drop off, and a waiting area with wireless Internet are available for your convenience.


Auto Repair Experience

  • John Mason, Owner
  • Established 2000
  • 2 Auto Repair Mechanics on Staff
  • 2 ASE Certified Auto Technician
  • 24 Years of Car Repair Experience


  • AC/Heating
  • Alignment
  • Check Engine Light
  • Classic Car Repair/Restoration
  • Diagnosis
  • Hybrid/Electric
  • Muffler & Exhaust
  • Oil Change & Lube
  • Scheduled Maintenance
  • Service & Repair
  • Timing Belts
  • Tire Sales/Repair
  • Windshield/Glass


  • AAA Member Discount
  • Car Delivery
  • Car Pickup/Dropoff
  • Child Friendly
  • Coffee
  • Early Bird Dropoff
  • Extended/Evening Hours
  • Financing
  • Free Estimates
  • Heated Waiting Room
  • Loaner Car
  • Service Guarantee
  • Shuttle
  • Warranty Accepted
  • Wireless Internet


Makes We Serve

  • Acura
  • Audi
  • BMW
  • Buick
  • Cadillac
  • Chevrolet
  • Chrysler
  • Dodge
  • FIAT
  • Ford
  • GMC
  • Geo
  • Honda
  • Hummer
  • Hyundai
  • Infiniti
  • Isuzu
  • Jaguar
  • Jeep
  • Kia
  • Land Rover
  • Lexus
  • Lincoln
  • Mazda
  • Mercedes-Benz
  • Mercury
  • Mini
  • Mitsubishi
  • Nissan
  • Oldsmobile
  • Plymouth
  • Pontiac
  • Porsche
  • Ram
  • Saab
  • Saturn
  • Scion
  • Smart
  • Subaru
  • Suzuki
  • Toyota
  • Volkswagen
  • Volvo

Message from the Shop

For over 15 years, Northside Auto & Truck Service has provided motorists in the Watertown, WI area with quality auto repairs and services. Our goal is to offer the best services available at affordable prices to get you back on the road in no time.

You'll be hard-pressed to find the same level of expertise that our auto mechanic specialists provide! We have years of experience working on both domestic and import vehicles of all makes and models and can work with you to find cost-effective repair and maintenance alternatives. After market warranties are serviced and accepted at Northside Auto & Truck Service for added convenience.

For a high-performing vehicle, trust Northside Auto with your car, truck, van or fleet. We also service aftermarket warranties for your convenience.

Also available Friday by Appointment Only.

RepairPal Certified

Technical Ability

This score measures the experience, tenure, training, and certification of the technical staff as well as a shop's ability to get the repair done right the first time.

Tools & Equipment

This score rates the shop's computer diagnostic tools, technical information systems, and other equipment to make sure they can address any issue that may occur with your vehicle.

Customer Service

This score measures the experience, tenure, training, and certification of the customer service representatives, as well as how their customers grade them on overall experience, fair pricing, on-time completion of repairs, and whether or not they felt pressured into additional repairs.

Customer Amenities

This score rates the shop's amenities such as shuttle services, loaner or rental cars, a comfortable waiting room, WiFi, early-bird or off-hours drop-off, and more.

Parts & Labor Warranty

This is the minimum warranty the shop offers on parts and labor for all repairs.


Overall Rating

23 Verified Reviews

Customer Reviews

Verified CustomerJune 06, 2014

They gave very good service. It was done in a fast manner to my satisfaction.

Verified CustomerJune 05, 2014

They are very efficient and fast, and they explained everything they did to my car to a T. They even put a light bulb near my liscense plate without me having to ask them to.

June 04, 2014

I just like the way they do the work.

Verified CustomerJune 02, 2014

They provide great service, they pick up your vehicle do the work and then they bring it back to you. They also belong to my business network group.

Verified CustomerMay 22, 2014

They are close by and very convenient, I get really good service out of them. I do some mechanic work myself but at the moment I can't do the work myself.

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Verified CustomerMay 20, 2014

They have good service, people and fair prices. I only had an oil change.

Verified CustomerMay 20, 2014

I have no trouble at all with them I have been going to them for years. We get flyers for deals which we give to our friends if I don't need anything done when they come out so they can take advantage of the deals. They have loaner cars for you in case the repairs take longer than expected. They are friendly, and always let you know what is going whether it be an oil change or their 21 points inspection if they find anything wrong they will call you and let you know.

May 19, 2014

They have done a lot of work for me, I am very satisfied with Northside Auto.

Verified CustomerMay 15, 2014

Everything is fixed. Everything is running good and smooth.

Verified CustomerMay 12, 2014

I've been there a couple times and now they have my steering wheel to tight but I like them enough to still go there.

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Verified CustomerMay 08, 2014

I've always had good service there.

Verified CustomerMay 05, 2014

I think he does an excellent job and he is reliable, they are trustworthy people. They are very kind and it has been a pleasure and have recommended them on several occasions.

Verified CustomerApril 30, 2014

They were very courteous, knowledgeably and they let me know in depth with the repairs.

Verified CustomerApril 07, 2014

They are timely, efficient and get the job done.

Verified CustomerApril 02, 2014

I was just satisfied with the service, they knew what they were doing. I am tired of the franchise dealership service, and they do a good job.

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Verified CustomerApril 02, 2014

I was very happy service. I have been using them and they are reliable.

April 02, 2014

Their prices are really high, and other places have better prices, but Northside has financing and that is why I decided to go to them.

Verified CustomerApril 01, 2014

They got my car in very quickly, they were very friendly, and they also dropped me off at work. They did a good job.

Verified CustomerMarch 25, 2014

I like the work and sometimes the work has to go to the dealer. He is very accommodating and is handy to get to. It is very easy to get to.

Verified CustomerMarch 20, 2014

They are good, they did what I wanted them to do. If they found something wrong that they didn't originally quote me for they let me know, they are nice and friendly.

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Verified CustomerMarch 12, 2014

I like them because they don't pressure and let me know everything that's wrong and don't pressure you for you to get a quote right away. They're friendly. I appreciate Ryan in the front, and John Mason.

March 05, 2014

I find them to be overpriced the only thing at that shop in their favor is the fact they have loaner cars. They are not very knowledgeable on certain things.

Verified CustomerMarch 04, 2014

They were polite and did all the work on time, they did a good job.

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RepairPal Certified

RepairPal Certified shops pass a rigorous 42-point annual inspection by our master mechanics for quality work and fair prices.

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  • Real, verified reviews
  • Current expert training
  • Warranty on repairs
  • Great customer service