These guys are extremely proficient at what they do they send me pictures of what the problem is complete the description of everything that needs to be done with the price quote they don't proceed until I give them a call and give them the high sign to keep going I really enjoy working with these guys. These guys are really a pleasure to be working on my car read more

Don't use Stonum Automotive if you value your car and your wallet. I spent about $8000.00 last April on major repairs. So far both the new CV joints they replaced have had to be replaced, I am now having to replace the rear struts because either the strut or the installation was faulty. I will not return to Stonum Automotive to fulfill the warranty because I no longer trust their competency or their honesty. Several things make me wonder about their competency and/or honesty as when I decided to have another mechanic look at the car, one that has very high ratings, they found some questionable conditions in my car. One of these was a belt for the alternator- excuse my lack of mechanical knowledge, that was the wrong size. It was too small and near breaking. Was this incompetency or more? I don't know. But no matter what I will never go to Stonum automotive again. If I could give them a negative review I would. So far, I am having to pay another $2000 + to fix their incompetency. I had used Stonum for several years and feel my trust was totally betrayed. If I could give a negative review I'd give them a -10. read more

Beware - I took my car in and was told I needed a new radiator and 3 hoses - $2000. I just took it to another place in Longmont, a BMW specialist. I need one upper radiator hose - $284. The radiator is fine. I was shocked! read more

I paid them 130$ for inspection and they quoted me for over 850$ in unwarranted repairs. I had what needed to be done for 250$ elsewhere. One of these jobs takes 5 minutes to perform, it needed a 20$ part and Stonum asked for over 200$ to do it (other guys did it for free of course). Beware. They're counting on ignorant compliance to make money. I was counting on all these 5 star reviews to keep me driving. Do your research and ask around - Yelp won't tell you everything. read more

I brought my car, a beater in its truest form, into Stonum as a pully on my a/c unit was bad. They worked hard to find a solution that would keep my costs down, but were unable to put their faith into what they found available. Although I had to buy the whole unit, the fact that they really worked to keep my costs down did not go unnoticed...especially the fact that they didn't want to use a questionable part. Communication through the whole process was excellent, and they delivered the repaired car back to me actually earlier than they'd told me. The friendliness of the entire staff and quality of workmanship was truly a welcomed change from some places I'd tried. I'd recommend this group to anyone who needs a trustworthy place to bring their vehicle for needed work!!! read more

I highly recommend Stonum. They're trustworthy, knowledgeable, professional, reliable, friendly, with competitive pricing. I've been taking my cars to Stonum for many years. read more

Went in with a used car look over and it was the most through inspection i've ever seen. The mechanic noticed a huge issue but also let me know that the issue is under warranty! Great service as well! read more

These guys did some minor body work for me on my Chevy Tahoe. I came back with the door panel not seated on quite right. I called and they were super professional about it. Said to bring it right over and they would get it taken care of right away. The service was super professional and fair pricing. I like these guys. I'll come back. Also, while I was waiting in the lobby, I heard one of the mechanics come in and talk to the front desk staff about someone's repair. They were brainstorming ideas of ways to save the customer money. Thought that was pretty neat. Kudos to you guys! read more

My daughter took her car in for new spark plugs after Napa recommended them. The mechanic broke 1 off inside the engine and they wanted to charge us $2,500.00 to fix the issue they caused. My daughter's car drove in there but had to be towed away. The manager Mark Shy just continued repeating "Its not our fault", every other business I talked with about this stated that as a "reputable" business you fix it then let the customer know what happened. We asked they start an insurance claim, my daughter heard from a woman 1time by phone then said a separate adjuster would be out for independent review. She got an email stating it was not their fault and after several attempts to contact her never heard back. We are not even sure she was really an insurance person at this point. We picked up the car and NOBODY came out to say anything!!!!!! Stand behind your work with honesty and integrity not charge a college student what your mechanic broke!!!! Several mechanics we talked to said there had to be significant force to snap the plug off like that and in their opinion, it is on the mechanic to fix. I will NEVER recommend this company ever as their customer service is the absolute worst and all they care about is creating more business by breaking vehicles. Now my daughter is stuck with a non-running vehicle, is in college and working. There is something really wrong with a company that won't even try to work with a financially strapped person when they are responsible for the vehicle in their care. You broke it so you should fix it! read more

These guys are awesome! I was recommended here & they did not disappoint! I worked with Mark all day about my Jeep needing a new thermostat which I understand is a very labor intensive job & I drove my car off the lot driving better than it was before! But they're very sweet, helpful, & knowledgeable on what they're doing. They charge a fair understanding price with no intention to over charge you like a lot of other franchise auto repair shops do. He explained everything going on with the Jeep as it was being serviced on throughout the day & went out of his way to help. They've got a life long customer now, looking forward to doing business again with them. read more

Took car in for radiator. After paying $800 to have them try to fit 4 different radiators (FOUR?????) in my car, we drove it for 2 days before head gasket blew and car stalled and then began SHAKING, AFTER TWO DAYS OF HAVING IT and paying $75 to have it FULLY looked over. They checked about 30 things on my car and not one of the issues was the head gasket. In fact, the most important thing that was supposed to be fixed after radiator was brakes, which was quoted to fix @ $900, not head gasket. I have been advised by other mechanic shops that Stonum should have known the gasket wasn't working IMMEDIATELY, that there is no way that a head gasket would blow two days after taking it into shop, and that Stonum should have been able to tell there were issues with the gasket before I drove it off the lot. Took it back in hoping they would fess up to doing a crappy job, but no, instead, they quoted me a $2700 fix to my head gasket!!!!! Checked around Longmont and got quoted by an honest mechanical shop with integrity for closer to $1100. A $1600 difference????!!!!!! And Stonum said they stand by their work but not once did they advise they may have screwed up my engine by NOT CHECKING THE HEAD GASKET WHICH THEY WOULD HAVE KNOWN HAD ISSUES BASED ON PRESSURE or radiator spewing back into the engine WHILE IT WAS STILL IN THEIR SHOP. I took it in with full radiator and when they called me back they told me it was empty, which was a lie (it had been holding fluid for over week before they "fixed" it on their lot). Then, after having to get it towed back to have them RECHECK the 4th radiator they put in, and after radiator fluid was splashed all over interior of engine and got INTO the engine causing it NOT TO WORK AND OVERHEAT AGAIN (their fault), not once did Stonum try to take ANY responsibility. I was told there is no way a head gasked would BLOW TWO DAYS AFTER radiator and coolant system was "looked at/ fixed" UNLESS THEY NEVER did their due diligence and CHECKED IT prior to letting it be driven off lot. STAY FAR FAR FAR AWAY from STONUM AND THEIR POOR SERVICE AND THEIR HIGH COSTS! They ruined my engine but I found another shop who actually knows what they are doing. read more

First time customers and I am happy to say Stonum came through. Travis and Shaw are awesome to work with and kept me appraised on the progress of my vehicle. Originally took it in for an oil change and a small oil leak. Shawn trouble shot the issue and let me know his findings. I authorized the work to be completed and they came through. I think we've found a new partner for our vehicle care. Thanks John for a great first experience and a highly professional team. read more

My stepdaughter was home from school and was complaining about a noise in the front end of her car. Rich at Stonum was very accommodating getting her in and I found their price very reasonable. I will definitely use them again. read more

I'm extremely selective about who I hire to work on my car and these guys are top-notch. Travis, I believe his name is, works the front desk and gives excellent service, even when I've tried to haggle with him (he stood his ground, saying that they had a lot of skilled technicians in there who deserved to be paid what they're worth, and I respect that). He's also very knowledgeable technically (no service writer knows it all but he really knows his stuff). I finally had a chance to give them a chance to work on one of my cars and they really did a great job at a fair price. I hope they're a part of the community for a long time. read more

Completely misdiagnosed our truck after an accident. After 6 months of repairs, took it somewhere else who found there was still a bent axle, no 4WD and so much more. We told them over and over that the 4WD was not working and that it made a horrible noise, still said they couldn't find anything wrong. Huge disappointment. The only positive is that I didn't pay them a dime, the other guys insurance paid. Save your money and time and go elsewhere. read more

Charged for an AC service when there wasn't even a belt on the AC motor. Super disappointed. I just bought a used Jaguar X-type and the AC wasn't working so I brought it in for them to take a look at it and tell me what the problem was. After "servicing the AC" and "charging the system (adding AC fluid)" they determined that the AC motor had seized. After bringing it home and looking into it myself I find that there isn't even a belt on the AC motor! WTH GUYS! If I can figure that out myself why the hell am I paying you to do an AC service??? I could just diagnose my own automotive problems and bring it somewhere where they don't charge me for servicing an AC that's not even got a belt on it. People who lead busy lives working demanding jobs who need mechanics to take care of their vehicles shouldn't have to figure the problem out themselves after paying a mechanic to look into for them! Brings new meaning to the term "carsickness". read more

Went in for a brake job. They do NOT go above and beyond by any means. ABS light was on, shouldn't have been an issue to check that. Did all four corners (rotors, drums, pads) and didn't bother adjusting the parking brake. Even at quick service places, I've had my parking brake adjusted for free if I was simply rotating tires. Pretty location, unimpressive service. read more

Outstanding customer service, extremely thorough work. I wouldn't go anyplace else!

We bring our Tacoma and RAV4 for here for all oil changes, regular maintenance, etc. These guys are courteous, professional and honest (Probably why they are consistently rated one of the best auto shops in Longmont. I won't bring my vehicles anywhere else. read more

I called your shop on Thursday 6/4 to get an estimate on replacing the alternator on my 2004 Explorer, I spoke with Peter, and after about 10 min on the phone Peter advised me an estimated cost of $270.00 installed, which seemed to be a fair price, so I scheduled the appointment for the following day to have the work done. I drop my vehicle Friday morning and also ask Travis to have my brakes checked as I've been feeling a little shudder occasionally, Travis asked me if i wanted them to check to make sure the alternator is bad, and I advised him I'm sure the alternator is bad, but to go ahead and double check, not knowing there is a $63.60 charge for this.A few hours go by and I receive the call from Travis, advising they confirmed the alternator is bad, but the price is now $360.00 because it takes a different alternator that is more expensive, and I agree to the pricing. I show up to get my vehicle, and now the price is $455.00? The above is an excerpt of a letter I sent to John Stonum, the owner - below is his reply! "I was out Thursday and Friday for a Napa seminar so I am not up to speed on this transaction. Please allow me to look into it on Monday and I will find out the details. I will certainly get back to you with my findings and see if we can resolve this issue. Thanks for the heads up, I appreciate you taking the time to let me know of your recent experience." That was nearly 2 weeks ago...to date I have not heard anything else back from Mr. Stonum! Bait and switch at it's finest!! I will be finding a new garage to take my vehicles for repair. read more

Just like any other mechanic shop. They over charge and mark parts up. I called and asked for a price on a service, and also asked if they mark their parts up. The guy on the other end smirked, and said, "Well, we do like to make a profit." That's why I pay your labor charge. People are getting smarter, and can easily find how much a part or service costs via the internet. Unfortunately, all mechanic shops are like this now, so you have to find one you trust. I will never do business with this shop. read more

Love, love, love these guys! I am a single woman and have been ripped off before by a big name shop. They only do what is necessary, but do bring your attention to other issues that might need to be remedied in the near future. Always very courteous. read more