These are the most amazing and caring people who do amazing and quick work. They wont bleed you dry either. The prices are reasonable. Very honest and upfront and really care about their customers.

Had excellent service and the owner is very professional and explained everything and didnt try to rob you.

They know their stuff....did a straight weld on my headers to the exhaust....fantastic job is less than two hours....Hot Rods welcomed...the C-10 runs like a champ....

Came to Mad Hatter to have a repair done on my exhaust. I would highly recommend them! Thanks guys.

Great service, awesome and friendly people! Definitely our shop of choice! We will be back with our other vehicles.

Very professional. Will use agàin. Appreciated ride home as job would take some time.

Good honest place of business dont try to bs you they fix your car super professional been there three times now best customer experience since I moved to Granite a few years ago forget the chain places

They did a very good job on my exhaust at a very reasonable price. Very happy with their work!

Excellent muffler shop!! I took my SUV to Mad Hatter Mufflers after paying another shop a very high amount for exhaust work because my SUV had exhaust leaks which the other shop did a very poor welding job the first time. Since the work was under warranty with the other shop I took my SUV back to the shop, but different location…they couldn’t correct their other location poor welding job of my exhaust…they told me they were “having a hard time correcting it and stopping the leaks” which they also did a poor welding job that caused more problems and caused the exhaust leaks to be worse. Mad Hatter Mufflers corrected the exhaust work that the other shop (s) did. They even work the price of the job with me because of the high amount I paid the other shop. I cant thank them enough! I wish all shops that do exhaust work are honest and experience like Mad Hatter Mufflers.**Update**Mad Hatter Mufflers contact me to check and see how my SUV is doing after I got the exhaust work done. That was really nice of them! They prove to me that they care about their customer’s vehicle and the customer is their number one priority. I highly recommend this shop!

They so down to earth the owner mad fun to talk to

Great group of guys the owner will go out of his way to make you very happy....thank you again for the great work and service I will definitely be coming back again....

Good, fast service, reasonable prices and good establishment!!

Mad hatter mufflers is the only place to go if you need exhaust repair/replacement, or breaks in Granite City. If you go anywhere else you pay more and get a lesser quality job. Really kind people there.

Very over priced go to DPB automotive

Overpriced. Didnt weld the pipe off the manifold to the exhaust then told my neice their was nothing wrong when she took it back! You could hear it! When i looked there wasnt even a clamp and at 1300.00 you think they would have done it right or at least rectified the issue! Never again! She took it elsewhere because mad hatter told her she had transmission problems and the other place did a THOROUGH CHECK guess what? Exhaust leak that 1300.00 should have fixed. So now 1420.00 later its done right!

Good guy super friendly awesome good quality work. Thanks for the help in the time of need.

Great place to go. Very respectful and professional people that take care of their customers!!!!

Great people great fast service. Definitely will be back.

Those guys are great

Excellent muffler shop!! I took my SUV to Mad Hatter Mufflers after paying another shop a very high amount for exhaust work because my SUV had exhaust leaks which the other shop did a very poor welding job the first time. Since the work was under warranty with the other shop I took my SUV back to the shop, but different location…they couldn’t correct their other location poor welding job of my exhaust…they told me they were “having a hard time correcting it and stopping the leaks” which they also did a poor welding job that caused more problems and caused the exhaust leaks to be worse. Mad Hatter Mufflers corrected the exhaust work that the other shop (s) did. They even work the price of the job with me because of the high amount I paid the other shop. I cant thank them enough! I wish all shops that do exhaust work are honest and experience like Mad Hatter Mufflers.

Friendly environment,very reliable,decent prices,use this shop Everytime I have a problem,the owner is real respectful and takes time out with customers.

I had a warranty issue and they took care of me quickly with no hassle.

This is the place to get any exhaust work done. Replaced my exhaust system on my truck in less than a hour. Truck sounds awesome. Great bunch of people here very friendly.

These guys are great!! only place ill ever go for exhaust work!! got me right in and got her done in less than 45 minutes!! i didnt even have an appointment!! my car sounds and performs awesome now!! thanks guys i really appreciate the awesomeness!!! 👍💯❤️😎

These guys do honest and affordable work. They had everything done the same day I dropped off my car. Not to mention they did it for a price that was 1/3 of what another shop would have charged me. Dont think about it just bring your car here . These people will do you right

They took care of me. It didnt take a long time either

Vary quick will DEFINITELY use them in future

Fast reasonable and attentive. Excellent

They repaired my muffler for 80 dollars. The other shop told me I needed a complete new muffler, which would be 250 to 300. Thank you for your outstanding customer service!!!

Had a simple muffler job done a few years ago. They botched it so bad. 2 bends in a provided pipe is all they had to do. What they did was wrap pipe under the area in an exposed position and took off my skid plate and threw it in back. I have heard good review of this place. But every time I have visited I have left mad or disappointed. Spend the time to research better mechanics.

Fast service and Quality work

Good work, fair price and fast service. What more could you ask for when your exhaust is giving you problems? They treated me well and I would go back again.

Hands down, always the best place to get any exhaust work done.

Did good work

They did my exaust on both my cars kieth glisson did amazing work and has great customer service. Recomend every one to go check them out.

Great guys, quick and great prices

Early appointment. Replaced expansion pipe in under 45 minutes. Great service.

Gary and darrel are the best guys in the buisness, dont look any further than this place for your exhaust or brake Work!Best pricing around,will save you lots of money!

Gary is a great welder,excellent pipe bender,you will get a great system built for a even greater price!!Dont look any further than the granite city mad hattwe for your next exhaust system build,and and other repair!There is a reason they have been around for almost forty years!

After waiting over 6 hours for just a quote from Meineke on an exhaust issue I took my car to Mad Hatters and they had me out of there in 10 minutes. Great service and honest people!

Gary did one hell of job on my 2006 dodge charger srt8 and my 2007 ford f150 both sound amazing and good solid work at a more than fair price

Fast efficient and courteous this place is awesome and fairly priced

Because of the way they truly care about their customers.

Couldnt afford to replace the damaged pipe but that didnt stop these guys from getting me back on the road. Fantastic!!!

Excellent and Honest service. They did the job right and did not try to sell me things I did not need.

A++++++ Highly recommend, Fast service, excellent quality exhaust work.

These guys always come thru for me! Reasonable prices and great customer service!

Cheap and good quality work

Gave me great service and the outcome of the finished job looked great

Very reasonably priced great automotive work

Never go there again they over charge people

Quick and affordable!

Good, fast and fair priced! Ill be back!

Good shop, great work, and good people

They tested my catalytic converter at no cost to me and I cant thank them enough for it, considering what other shops wanted to charge me to do the same thing!

Fast and friendly

Great service!

Fast friendly service

Great place

Fast service