I am so glad I found this shop. They always discuss thoroughly what is needed, get it done very…read morequickly and for a reasonable price. If you are looking for professionalism, honesty and fair prices, Griswold is the place. Nancy W

I got an estimate to replace the timing belt and the water pump. He did the job in a timely manner…read moreand cost exactly what the estimate was. Friendly as well. would recommend.

Gave my daughter a stuffed Scooby doo she carry's around every day! Did my break pads and rotors…read moregreat quality and price!

The mechanics are so friendly and they got my car running when others said it needed a new engine…read more They saved me thousands of dollars and a bunch of headache.

Don is an extremely knowledgeable and straight forward mechanic (also a really nice guy). Brought…read moremy 85' K10 to him and my only regret was not having a pen and paper to write down everything he knew about the truck.

We were on our way up to Michigan's UP, and started having transmission issues. Don was the only…read moreone that took the time to look at our Jeep, and had us back on the road that day. 3 other places said they couldn't even look at it until the following Wednesday. He was incredible to deal with, and very helpful. I would highly recommend him

Wow !!!! Seems like good service has taken a slide these days but not at Johnnie's 66 Towing …read more They were super helpful and honestly helped us decide if it was time to send the car off to salvage or fix it . Offered to load it up on my trailer as well . Strongly recommend!!!!

I have used Johnnies for oil changes fuel filter changes and misc. basic repairs for the last two…read moreyears. I have always been treated fairly with honesty and respect. And, regarding one of the negative reviews, I have never once heard anyone in the station uttering a cussword. And frankly, broken arm guy, if you don't pay, it's not okay.

Mike was absolutely amazing on getting my truck up and running! Great communication, great cost,…read moregreat work! Will definitely do business with him again.

Mike was amazing!! I highly recommend his services, my dad passed away who always used to handle my…read morecar and servicing my car and Mike did a very thorough job diagnosing and fixing my car for a very reasonable and fair price. I was quoted a ridiculous amount at other shops and probably would've spent much more taking it anywhere else. It's a unique experience being able to hang with your mechanic and get to know them and also learn about the work they're doing. Again a 10/5, he's amazing and I'll be getting my car serviced with him moving forward. Thanks Mike!!

I was traveling on vacation towing my boat to my destination when my vehicle began running poorly…read moreand my check engine light started flashing. I pulled off the highway and found the nearest repair shop I could find, which ended up to be High Tier Automotive in Beaver Dam, WI. Even though it was about twenty minutes before their closing time, they diagnosed the problem with my vehicle and worked late to fix it. They got me back on the road that day and I did not have any vehicle troubles after that. I found them to be very knowledgeable about what was wrong with my vehicle and very helpful to get me back on the road at a reasonable cost. I cant say enough good about this place. They went above and beyond to help me out of a situation. If I lived closer to this shop, I would take all my vehicle repair and maintenance business here.

Truck engine was rattling like crazy for quite a while, esp when i accelerated. i had it in for…read moresteering linkage (great job also) and mechanic found all bolts on exhaust manifold were sheared. They did a great job! i couldnt believe how quiet that engine sounds now, and i dont have to worry about something falling out on the road. they also welded an exhaust pipe that had a split. excellent job all around, they really went above and beyond in getting my beloved truck running like new.

They're CROOKS! Sold my 18 year old daughter a Kia Forte with the wrong engine in it. When she…read morebrought it to our mechanic, he called and said there were many issues with the vehicle. 1)First and foremost was the wrong engine in the vehicle to which whomever swapped the motor took a grinder and ground down the engine block to make it fit. 2) Next the air compressor is not attached to anything and flops around the engine compartment because once again wrong motor covers up the anchors for the compressor. 3) there are at least 4 different sensor wires that are not attached to anything so we don't know how the wrong engine is performing. 4) the timing chain/belt is worn and when you move from a dead stop you can hear it whine. 5) the engine and transmission don't line up properly so when you give it some gas you can hear the the grinding of the gears. I would not recommend this place to anyone! Even if you're my worst enemy. Called The owner explained what our mechanic found and he tried to turn it on us that Chausee's automotive which is a trusted shop in Sun Prairie (been in business for over 40 years) was wrong and didn't know what they were talking about. I went to school with the owner. Next we set up an appointment so his mechanic could look at it. Called the night before and changed the time. I called back and he never responded and haven't heard from him since. Please don't throw your hard earned money away at this place.

From the owner: Car Dealer, Auto Repair. read more

We had an issue with our brakes while passing through Columbus. We pulled into Big Mikes at 4:30…read morepm, Mike took it for drive, repaired in a short time and charged us nothing!!!! Wow if only we lived in Columbus, that's how business should be done. His receptionist was kind and friendly and the facility was so clean We totally appreciate you guys!!!'

We have been bringing our vehicles to Big Mike's since the shop opened (2015 I think). We have been…read more100% satisfied with the work, advice, and treatment we've received. Even when we didn't like "bad news" it was clearly and patiently explained in detail in normal words that we could understand. No "up-selling," no pressure. We trust Mike's so much that when I broke down in Oconomowoc, I paid the extra $$ to have the car towed to their shop. All the guys are great, Diane is super friendly.

Horrible. They changed 2 air filters that didn't need to be changed. Looked back at service history…read moreand one was changed last time! Up charging for things not needed just to make a buck! They want me back in 3,000 miles for a synthetic oil change when everything online and other places say 7,000. Ripoff, never going back and been a loyal customer for 8 years, through the owner changes.

NEW OWNERSHIP + MANAGEMENT IS INCOMPETENT + NOT QUALIFIED. If I could give zero stars I would. The…read morenew ownership is absolutely terrible. I've gone twice in the last month and both times were frustrating. The first trip they were going to take my tire off to change the oil filter. The oil change took over 45 minutes and I immediately took the car to a mechanic to check if everything was okay. The second trip they made excuses about the oil company needed to calibrate their gun because they put way too much oil in my car. That trip took over 40 minutes. DO NOT TRUST THE BEAVER DAM LOCATION. That is the last time going there. I got the cheapest oil change at $70. Absolutely ridiculous. I feel like my engine is going to blow up. Going back to another mechanic.. DO NOT TRUST THIS PLACE AT ALL.