I would strongly recommend Mighty Muffler Pros. My car started sounding like a lawn mower yesterday. I call to see if I could schedule an appointment to get it looked at. I was told to bring it in and they would look at it. The diagnosis was a flex pipe flange gasket had blown. The part was replaced and I was on may way in a hour for a really reasonable price of $100.00. This was the best experience I've ever had with an issue with my car. I would give them more the 5 stars if that a a choice. Thanks for the great service a a really reasonable price. read more

Got our car diagnosed and quoted for the appropriate part needed ($1980) + labor ($250). We buy the part separately and when we come in they increase the labor cost to $600 saying they originally quoted us for a different part than what we actually needed (which isn't true, especially since we have it in writing). I can't speak to their quality of work as we went to a different shop for the labor. But the fact that they switched up the cost on us gave me a doubtful feeling about their integrity. read more

Mighty Muffler Pros - Auto Repair Near Me - Westminster, Colorado

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Very quick, efficient and friendly service! I will definitely use this business again and highly recommend it to anyone needing exhaust system repairs or service. read more

Cannot recommend... Had custom Cat Back Exhaust installed... Rattled and rubbed under frame...took vehicle back for service...stated was repaired ..now rattlles worse! Now taking vehicle to other vehicle experts... read more

Mike is an honest person and tells ya straight up what needs to be done. Gave me good advice on my repair.

These guys helped out and saved my day. I was looking for an exhaust part for my truck. After calling multiple shops with no luck, Mighty Mufflers went above and beyond to help me out and get me what I needed. Could not thank and recommend them enough! Go to Mighty Muffler - Highly Recommended! read more

What Goodyear couldn't do for $250 my man Gary did for $100. And an only one hour. I'd Definitely go here again.

Had 3 feet of 3 in pipe installed from muffler back. Did A horrible job, didn't offer any logical advice on how to make a cleaner repair. Again, 3 feet of pipe, a tip and 2 horrible welds for $455 bucks. had it corrected properly at exhaust pros for $200. Should have never went there. I can only blame myself. read more

Mighty Muffler Pros - Auto Repair Near Me - Westminster, Colorado

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Receipt attached. I obviously out of warranty but you inspected this job, so whether it's an employee or not, you are the expert

Had a seat issue and it was fixed in minutes!!! Amazing staff and super friendly!! Run by Vets and give Vet discount. Seat off. Lever fixed. Seat back on. In and out. Thank you guys!!! read more

Not sure what's going on with the reviews- seem to be very good or very bad. All I can say is my entire family has gone to Mighty Muffler for about 20 years. They are always fair priced and do good work. I do call and make appointments - just to make sure they have all the parts on hand. Not sure if that was the issue with some of the other reviews, but this isn't a grease monkey franchise - they don't hold every part for every year, make, model of every car - so you may need an appointment so they can make sure they have everything on hand to complete the job in the time they promised. (Again, I don't know the details but just guessing). Just today I got my front brakes and rotors done on a new-to-me used car. They got them done at a price lower than was quoted (and the quote was cheaper than other shops), and had the car finished even faster than he said they would. I was planning on coming back to get my rear brakes done at my next paycheck. Jim let me know the issues I was having was probably because the front rotors were out of round, and my back ones actually look really good so I didn't need to come back until I am having a new problem. Now that's an honest mechanic! We've gone to them for years, and will continue to go to them. They have earned out trust over and over again. Hope this review helps some folks. read more

I went to the Arvada location on 80th and Sheridan. And realized it was presidents day and they were closed. As I noticed further I seen political stuff on the door, not in a positive way. Telling prospective customers that the company is changing a extra 3% welcome to Bidenomics, you voted for him. Guess I'll take my business elsewhere read more

Needed a Flex Pipe, Mike and the mechanics was really nice and gave me a good price. Other places was trying to over charge but this place is reasonable. I scheduled and was in and out in no time!!! Super friendly and good price for fixes. Would recommend and patronize again. read more

BIG SHOUT OUT to Mike and his crew for uncommon integrity and stellar service! After another shop had charged me over $300 for unnecessary diagnostics and unapproved work, I reached out to a trusted mechanic that we have used for over 20 years, and he pointed me to Mighty Muffler Pros. They immediately recognized that I had been taken by the other organization and helped me assess what had been done up to that point and what needed to be done going forward. They spent nearly an hour reading my engine code history and thoroughly examining my vehicle - even adjusted my tire pressure and offered to tack my heat shield for free. In the end, they sent me back to my long-time mechanic for his weigh-in on the matter, without charging me a dime! Everything that they did and said turned out to be spot on and they probably saved me thousands in unneeded repairs. I would recommend them without hesitation! read more

A Mighty Muffler, Thank you for your quick and quality work on my 2015 RAM. They helped me price out the job, and even got me info so I could buy the parts prior to coming in (which no mechanic/auto shop likes). And came in right at what they said it would be cost wise. They are first come first serve so it took about 1.5 hours but the job looks great, fits really tight with zero play or travel. Got to watch part of the job, really friendly guys, will show and explain everything before doing anything. I'll be bringing the rest of the trucks in, and I would highly recommend this to anyone looking for exhaust work. Check out the photos!!! read more

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Go in there and some grumpy old guy doesn't even say hello or anything says "do you have an appt?" I reply "No I didn't know you needed one" and then old dude finally looks up from his magazine and says "you have too have one." I reply "ok how do I set an appointment" at which point he gets up without answering my question and walks too the back. I wait a few minutes and just leave. The absolute rudest and grumpiest person I have ever met in customer service. I needed a full exhaust for my truck and this turd just passed up an easy job. This place will be out of business soon if "grumpy" doesn't learn how too deal with people. Don't waste your time with these clowns. They will treat you horribly and don't deserve your money read more

Don't waste your time and money on this place. They don't seem to want your business and doesn't care one bit about it.

I went there once before, and had a horrible experience. I brought my own muffler, and just wanted it installed. After installation there was no sound difference and I was informed they left the isolator on. I asked that it just be cut off there, and they said it would be ANOTHER $100 to just cut that off. I ended up doing it myself in the driveway of my friends house. I somehow chose directions to the same muffler shop two years later, and upon my better judgement, since I was already there, pulled in. I have an off-road vehicle, and need the exhaust set up, so it won't get smashed. Now, as opposed to $100 extra dollars, the same older gentleman refused to even do it. He (the owner I presume) is an impolite, inconsistent, money hungry person, and I highly recommend going elsewhere. read more

16 years ago had an exhaust system put on a 1975 Dodge Truck. Great Service and they did a great job. BUT now, maybe a different owner because they are extremely rude on the phone and in person, and when you do make an appointment a week before they do not honor the appointment. Today was the second time there will not be a third. I recommend going else where. read more

Called the day before about 8 times throughout the day for an appointment, no answer. As the website says, walk-ins are accepted. Got there early and had a guy looking at me like an idiot telling me i had to call in to get an appointment. ooof, i'll go somewhere that can at least answer their phone. read more

This place is exceptional, Jim and Gus will take care of you in a jiffy! Mighty Muffler in Westminster is fair priced and quick with the work. I was told at one shop in Denver that i was looking at about $1400 in work. Went to Mighty Muffler for an estimate. $800 later my car passed emissions with flying colors and I was back on the road savings hundreds of dollars! Thanks Mighty Muffler you go above and beyond! P.S. Take them a box of doughnuts and they will love you lol. read more

Had some custom exhaust work done on my car and these guys really made it happen; I brought in my parts and we worked out a great deal.... I have dealt with Mighty Muffler previously at jobs with local high end European car shops and had great service.... This experience was exactly the same as the positive ones I have had in the past..... There was absolutely no wait and work was done quickly and efficiently with quality. I poked around after it was completed and everything looked fantastic with good welds... BTW I came from Boulder to this location, well worth the drive.... read more

Bad custom service, no one was friendly. Overpriced. Most importantly, shoddy work. A couple months ago I had headers, a resonator and a catback installed. The exhaust rattles BAD. It didn't at first, but now it's awful. After inspecting to see what it was, the exhaust hangs loose, TWO/three nuts they put on one of the bolts connecting the cat to the car back were the WRONG SIZE. They fit over the bolt like a glorified washer. Bad welding on the flanges, for over $400 I expected quality work. I DO NOT RECOMMEND this shop to anyone! read more

This guy looked at my car and said he had to order my part. He didn't call back for two weeks and when I checked in, he told me it would be faster to get the part on my own from a dealership. He was too lazy to look up the part number and insisted it was the only gasket if it's kind in the area (it wasn't). I finally got the part and dropped the car and never heard from him all day. When I went to pick it up after work, the shop was closed. Nobody had called to say my car was ready. I had to get home and find a ride for my son to school the next day and a ride to my car. He didn't even apologize. Incredibly unprofessional and sexist. I would NOT recommend fhem AT ALL!!!! read more

Was recommended this shop to get a simple part for my exhaust. The owner was rude and didn't have the time of day for me. When he finally got around To looking at what I needed he told me I had to go to a junkyard. Went to another muffler shop and they pulled it out of the scrap bucket in the back and handed it to me for free. I will never recommend mighty muffler to anyone! read more

Open and close when they feel like it. Terrible customer service. Poor work. Had an exhaust leak brought it in to get fixed they called said it was fixed. I picked up the truck and could clearly hear the exhaust still leaking. It was like pulling teeth to get it back in to there shop. Always said they were too busy. Finally got it in only for them to tell me they dont have the part to fix my exhaust. The guy was a complete ass. He told me i should put my exhaust manifolds back on after i spent 200 bucks for headers. A joke! read more

They are lazy incompetent. I left an up pipe overnight to have an O2 bung welded to it, and have an adapter made for my exhaust. The welds for the up pipe protrude into the interior of the pipe, and looks like some could break off and end up in my turbo. As for the adapter, it was cut haphazardly and welded up crooked. They did not clean up any of the items I picked up, and there were metal splinters and shavings all over them. They completely forgot about my order, until I walked in, then had me wait while everything was welded up in a rush. I paid $70 for this. Most definitely not worth it. Up pipe is ruined. Pics for proof: https://imgur.com/a/UMbTo Update: I went back to get a refund. They have a no refunds policy. Sounds shady to me. Exceedingly rude. Had a smug look as I walked out of his shop, as if he had scammed another person. This is why I paid with a credit card. read more

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Took my car for appraisals. Mighty Muffler was definitely the right choice. They were very helpful and fast. They did an awesome job! Thanks Mighty Muffler! read more

Horrible customer service. I wouldn't send my worst enemy to these guys. Tried charging me $300 an hour to put a single straight pipe on my car. I'm a car mechanic by trade and I cannot see a exhaust shop needing more that $100 an hour for their "special" trade.... Was then told it was my choice to come to them so I said goodbye... read more

Was so rude on the phone the tech made my wife cry before we even took the car in - basically laughed at her. Cancelled appointment. Would never ever consider giving them my money. read more

I have been using mighty muffler for a few years now. It used to be the only place I would go, but now that Gary left a few months ago I won't be going back. I went in there to get new mufflers put on my car recently and they charged me $120 to cut my old ones out and clamp the new ones in (that I purchased online). That seems a little steep for four cuts and a couple clamps that I had to re-tighten a week later because they used the cheap clamps. I also specifically asked them not to drop my old mufflers and they dropped both of them. I have recently decided to buy my own welder and do all my own exhaust work. If you need any exhaust work done, find a different place. They are over priced, do mediocre work, and are arrogant and rude. read more

Poor quality workmanship exhaust was under sized and rubbing on the frame of the car had to have all redone by A qualified shop, mighty muffler refused to make it right. This place is not recommended! See the pictures on their site I posted of exhaust hitting floor board and rubbing on emergency brake cable and undersized exhaust tube choking the motor, hazardous and crooked. read more

I have tried two days in a row now to take my car to this "first come first serve muffler shop" at 8am (the time that they open!) And both times the OPEN sign was switched on and the door is open so i walk in to get an estimate and there is a man who's only there to tell me that they are closed, BOTH TIMES. Very unprofessional. If you are closed lock your door and turn your darn sign off!! I wish i could vote negative stars!!! read more

I'll cosign on that. They guys who work there used to do ok work. But since the locations are closing up the quality has suffered. I used to get my brakes done at the Colfax store. I will never be going back after I spoke to an ex manager. He told me the owner laid off his entire crew at the Federal store one day before the shop had to close. he didn't give any of his employees proper notification or time to find work. thats just plain bad business. Id say the quality of work they provide is directly correlated to bad shop management. I recommend going to my four year old cousin for any work comparable to theirs, and you only have to pay him in cookies. only gave it one star because I had too. read more

Highly recommend! I went to another repair shop that was going to charge me almost $800 dollars to fix my muffler. I brought my car in to Mighty Muffler and got my car fixed in an hour for $140. The service was great as well. Very respectful and helped me understand what the problem was and how he was going to fix it. read more

Very polite and didn't sell me anything I didn't need. Highly recommend. Had a noise coming from under the hood, I assumed it was a muffler/manifold problem. They kept it for a couple days and took things apart and didn't find any problem. They didn't even charge me! read more

Totally recommend. had a quick turn around time, very friendly, and best price in town. I have a Nissan Frontier and needed the muffler replaced. they did it in 1/2 an hour. A+++ Service. read more

This place is open and closing on there own time. I've came here several times during the "hours they are supposed to be open" but have been closed several times. When I finally was able to get my car in I could tell they didn't even really wanna work on it. The owner is a jerk and very short and very rude. read more

Service was quick and I am pleased with results. I recommend arriving early as it is first come first serve. I would recommend for all exhaust issues. read more

I had them replace the catalytic converters on my car in September 2012 and within a few weeks, the check engine light started coming on. I had it checked out a couple of times and the reading kept coming back saying there was a problem with the catalytic converters. I took my car back to them and they said there was something wrong with my car that was causing the converters to fail and I needed to take it to a mechanic to figure out what was wrong. I took my car to a very reputable automotive shop and after extensive testing, they determined the problem was the front converter was not the right one for my vehicle. I took my car back to Mighty Muffler, along with a detailed explanation of the problem from the mechanic and a letter from the Colorado Department of Health & Environment explaining problems with improper after market converters. Even with all that information and a 1-year guarantee from them, they refused to fix the problem. They insisted they installed the right converter, the mechanic didn't know what he was talking about and there must be something else wrong with my car. I now have to pay an additional $400 to get the proper converter installed so that the car will pass an emission test and I can get my license plates. BEWARE - there is a reason they can offer the lowest price on converters!!! read more