Mountain Auto Repair

(303) 502-5665
41 Verified Reviews

8:00am to 5:00pm
8:00am to 5:00pm
8:00am to 5:00pm
8:00am to 5:00pm
8:00am to 5:00pm


4727 North Broadway
Boulder, CO 80304 USA


  • Matt Tarpill, Owner
  • Established 2012
  • 4 Auto Repair Mechanics on Staff
  • 4 ASE Master Auto Technicians
  • 74 Years of Car Repair Experience

Mountain Auto Repair Reviews


41 Verified Reviews
5 stars
4 stars
3 stars
2 stars
1 star
by - Verified Customer May 08, 2017

Professional, honest and friendly.

by - Verified Customer April 19, 2017

Excellent work, great communication. A rare find!

by - Verified Customer April 03, 2017

I feel confident about the work done at Mountain Auto Repair, appreciate their attention to detail, their fair pricing, and going out of their way to make sure I understand what the vehicle needs or doesn't need.

by - Verified Customer March 16, 2017

I highly recommend this establishment. I feel like they go above and beyond and are very honest.

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by - Verified Customer February 27, 2017

Love doing business with you guys even when it hurts my pocket. Keep up the great work.

by - Verified Customer February 02, 2017

Love Mountain Auto :)

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by - Verified Customer December 21, 2016

Great shop.

by - Verified Customer December 21, 2016

Nice place to do business!

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by - Verified Customer December 20, 2016

These guys are great! I'm a car guy and very fussy and these guys are the best.

by - Verified Customer December 18, 2016

I always take my 4 runner here and am always satisfied.

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by - Verified Customer December 14, 2016

I recommend Mountain Auto whenever I have the opportunity.

by - Verified Customer December 13, 2016

Would highly recommend. Friendly and honest.

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by - Verified Customer December 07, 2016

My go to.

by - Verified Customer November 17, 2016

Excellent and professional service.

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by - Verified Customer November 15, 2016

We love Mountain Auto. Fair, honest and friendly! I would not deal anywhere else!

by - Verified Customer November 15, 2016

Great guys, 100% honest and trustworthy.

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by - Verified Customer May 13, 2016

Friendly, no-nonsense service.

by May 11, 2016

Super Helpful, very kind and very real! They helped me make a decision for a used car I recently bought and did a very thorough check on the car.

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by - Verified Customer May 11, 2016

Some custom work was done in addition to standard maintenance such as oil change. Asked them to check a couple of underbody issues and they accurately quoted those and finished the work including the custom installation timely and very well.

by - Verified Customer May 09, 2016

Great! We trust these guys and their little dogs too!

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by - Verified Customer May 05, 2016

I have been going to this shop for years. This time I only needed an oil change. I have always found them to be quick, trustworthy and reliable while also being fairly priced.

by - Verified Customer April 22, 2016

Good product & service at a good price.

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by - Verified Customer April 12, 2016

All my experiences, including this one, have been good. They do great work at a great price, are really friendly, and make sure to get the job done when you need it done.

by - Verified Customer April 08, 2016

My last time in, they did a mechanical evaluation of a rather aged car. They gave it to me straight, a balanced assessment of the car's issues; really helped me with decision making around that car's future.

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by - Verified Customer April 01, 2016

This is the only shop I take my Subaru to. They are the ultimate best! They never try to get me to do un-needed repairs. They always have my car ready at the time they give me. Super honest and hardworking guys. On top of that they are really nice guys and talk a normal language not just mechanic lingo.

by - Verified Customer March 23, 2016

I had noticed a fluid leak under my car so took it in for Mountain Auto to check out. They diagnosed a power steering pump problem and replaced it. The repair was done quickly, on time, and the price quoted was the price I paid. I am very happy

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by - Verified Customer March 21, 2016

These two always provide quality honest work for solid reliable prices and I appreciate being able to take my car to folks I feel I can trust!

by - Verified Customer March 09, 2016


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by March 08, 2016

Work was completed on time.

by - Verified Customer February 29, 2016

These guys have been taking great care of my car for several years ...... they do good work at a fair price.

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by - Verified Customer February 26, 2016

They have always been honest with me and only done the work that needs to be done.

by - Verified Customer February 24, 2016

Matt and Bryan always do excellent work. They are fair with their charges. The other mechanics there are excellent as well.

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by - Verified Customer February 22, 2016

The gentlemen at Mountain Auto Repair are always prompt with their assessment of the problem and timely with the repair. I have always found them responsive when I have an immediate need. I find their prices fair and trust them implicitly.

by - Verified Customer January 29, 2016

I had a four wheel drive problem, they rebuilt transfer case and did a very good job.

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by January 22, 2016

They are always honest.

by - Verified Customer January 14, 2016

These guys are great and go above and beyond to take care of their customers.

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by - Verified Customer November 12, 2015

The guys at this shop are super honest, a lack of which is unfortunately often a problem at auto shops, especially for single females. I've gotten a lot of work done on my Jeep and they've always done a great job at a good price.

by - Verified Customer November 11, 2015

Very good. I enjoy Matt and the crew.

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by September 01, 2015

I was not happy with the service and management.

by - Verified Customer August 28, 2015

Excellent service. Reasonably priced. Very knowledgeable and trustworthy staff. Friendly.

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RepairPal Scorecard


Previous employee Matt Tarpill became the owner of this RepairPal Certified shop in 2012, renaming it Mountain Auto Repair. He and his team are working hard to continue the tradition of providing quality auto repairs for the Boulder area. This shop features technicians with an excellent mix of experience, ongoing training, and ASE certifications (3 are ASE Master Certified). Repairs performed here can range from tires and wheel alignments to minor and major mechanical repairs, to check engine light diagnosis and repairs, as well as your scheduled maintenance needs. All this work is backed by a 12-month / 12,000-mile warranty for your peace of mind. Our survey of their recent customers revealed a group who describe this group as “reliable”, “knowledgeable”, “friendly”, and “honest”. Loaner cars, early bird drop off, and a waiting area with wireless Internet are also available for your convenience.



  • AC/Heating
  • Alignment
  • Check Engine Light
  • Diagnosis
  • Hybrid/Electric
  • Oil Change & Lube
  • Scheduled Maintenance
  • Service & Repair
  • Timing Belts
  • Tire Sales/Repair
  • Transmission Repair
+ More


  • Early Bird Dropoff
  • Loaner Car
  • Service Guarantee
  • Wireless Internet


Located at the bottom of Lee Hill, Mountain Auto Repair has been serving the people of Boulder since 2012. Mountain Auto Repair is family owned and operated, and our certified master level technicians deliver timely, honest and thorough service to the cars, trucks and vans of the Front Range. Whether you're looking for routine maintenance or emergency service, count on the reliable, knowledgeable service at Mountain Auto Repair.


  • Acura
  • Audi
  • BMW
  • Buick
  • Cadillac
  • Chevrolet
  • Chrysler
  • Dodge
  • FIAT
  • Ford
  • GMC
  • Geo
  • Honda
  • Hyundai
  • Infiniti
  • Isuzu
  • Jaguar
  • Jeep
  • Kia
  • Lexus
  • Lincoln
  • Mazda
  • Mercedes-Benz
  • Mercury
  • Mini
  • Mitsubishi
  • Nissan
  • Oldsmobile
  • Plymouth
  • Pontiac
  • Porsche
  • Ram
  • Saab
  • Saturn
  • Scion
  • Smart
  • Subaru
  • Suzuki
  • Toyota
  • Volkswagen
  • Volvo
+ More
Questions Answered by Mountain Auto Repair
the air in my car has gone out completely ...
It could absolutely be a electrical issue in the wiring to the blower motor but it could also be the blower motor itself. One thing you could try is kicking the area under the glove box (where the motor is located behind the trim) while trying to use the air and see if that makes it work. Without actually looking at it it seems the best way to fix/diagnose the problem would be to pull the glove box out. If you have the tools to do so you could try and supply power and ground to the blower motor directly. If that works consistently you probably have a problem in the wiring and would have to pull the dash to find out whats going on. If it doesnt work, replace the motor.
My air conditioner works fine, but I do ha...
How is the CB wired? Sounds like something is shorting in the wiring and there are a lot of problems that can be cause by installing aftermarket systems like a CB radio. An AC compressor can demand a lot of amperage and if the CB is piggybacked onto that electrical system it could create problems similar to yours.
There is a relay that controls both low beam headlamps, if both went out at once that is likely the cause. There are also separate fuses for each light after the relay. It can sometimes be difficult to tell if both went out at the same time or if you were just used to only one being on and then the other one when out and you noticed it. If thats the case bulbs or fuses could be the problem, but if they both actually went out at the same time it's probably the relay (or something in the switch or wiring) that caused the issue. Also, on some of those gmcs theres a headlight dimmer that has a fuse before the relay that could cause that but I think thats fairly rare.
When I add oil every couple days the oil d...
How much oil do you have to add? An oil cap can certainly leak but if its a significant amount of oil you are adding and theres only a small amount of residue by the cap there must be another issue. You can have oil leaks without really being able to see puddles where you park especially on an audi like yours where theres a plastic cover underneath the engine. If there really are no leaks you may have significant engine issues like bad piston rings. I would recommend taking it to a quality shop to have them find where your oil loss is coming from.
If the AC clutch or bearing is on its way out it could have a hard time engaging under a load. When the engine is idling the crank will turn the belt at a slower RPM. When you hit the gas those RPMs will be higher so if the AC compressor clutch is starting to wear and slip it may only do that when the clutch has to work harder to lock the compressor and pulley together i.e. when the engine is running at a high RPM. Unfortunately it can be hard to find parts for just an AC clutch so its likely you will have to replace the compressor if thats the issue
Usually occurs when it sits in idle for a ...
The butterfly shaft bushings in the runner control system can leak unmetered air and cause the engine to stall. You have to replace the lower intake manifold if this is the problem. The first thing I would try is a smoke test. You could diagnose this by injecting propane around the shaft bushings.
Replaced head gaskets and timing belt,wate...
On a 3.3 liter engine I have seen many mechanics forget to put the plastic spacers under the injection rail before bolting it back on. This can cause an intake leak through the injector seals. That type of intake leak will cause the exhaust to burn red hot. Also I have seen repairs where the mechanic used a roloc disc on the aluminum mating surface resulting in an uneven mating surface that causes an intake leak that will also cause a red hot exhaust. An intake leak big enough to cause a red hot exhaust will be visible during a smoke test and that should be the first diagnostic test you should perform. It is a common issue with these engines and that is most likely your issue.
Replaced lifters, plugs, wires, distributo...
Are there any codes? Are you sure its the starter making the whine? An engine without proper compression can kind of sound like that. If you just replaced timing components I would suspect that that's where the problem lies. The engine is most likely out of time causing no compression. If not that, there are plenty of things in the combustion system that could be an issue and if there are any codes stored in the computer that could point you in the right direction.
After running out of gas I added a few ga...
Fuel pumps are lubricated by the fuel so running out of gas can burn out the pump. I would check that first.
the drivers side floor board fills with wa...
The seal on your windshield or door may be leaking. The water could run behind the trim and pool on the floor, leaving no obvious water trail.
How to fix OBD Codes: <br>P0171<br>P0174<b...
Check for a vacuum/intake leak. Spray brake cleaner or similar around the intake while the engine is running. If the rpms change you found your problem.
this is strange. the car will not turn ov...
Check the battery cables where they attach to the terminals. You might be touching the cable off the terminal with your jumper cables and supplying power to the car but if there isn't a good connection from the cable to the terminal you won't get any power from the battery.
my fan motor will not run when a/c is off....
You probably have two fans, one that is temperature sensitive and one that will run when the ac is on. It is normal for the ac fan to not run if the ac is off. If your car is at operating temperature and neither fan is running (or periodically switching on and off) you may have a problem.
It feels every bump even on the smoothest ...
Check your tire pressure, they may be overinflated. If the car keeps rocking after hitting a bump, making it feel like you are driving a boat, your struts may be worn.
There is also a noise coming from the fuse...
If you have fuel and spark scan the obd2 system to see if there are any trouble codes. A wide range of things can cause a no start condition like a bad camshaft position sensor or even a bad coolant temperature sensor.
It makes a faint clicking sound once. Wind...
Did you try to jump start it? The starter requires a significant amount of battery power to operate, even if other electrical things like the stereo and windows function your battery could not have enough power to turn the starter. When you get it started it is a good idea to test the battery and alternator. A faulty starter could also be the culprit.
early morning 5am, starter engaged and won...
Most likely the starter or more specifically the starter solenoid. It sounds like the solenoid is sticking, supplying battery power to the starter when it's not supposed to. Try smacking the starter next time it happens and if it stops that's almost certainly your problem.
Had it taken to shop .. Drivable n changed...
Bring it back to the shop. It might not have been bled correctly although a lot of those fords (I'm not sure if yours does or not) have a pre-filled and bled master and slave cylinder assembly so that shouldn't be an issue. It's possible you have a problem with other parts of the clutch like the throw out fork or bearing or maybe the pedal bracket or something but if you had your clutch repaired at a legitimate shop and it still doesn't work there's no reason why they shouldn't take care of it for you.
It only takes 3 minutes on average to get ...
You should never drive a car that is overheating or you risk causing major engine damage. It may be nothing but the best thing to do would be get it professionally diagnosed asap.
Compressor is leaking. Has been updated to...
If the compressor locks up and the serpentine belt isn't turning the water pump it could cause engine damage by causing the motor to overheat. A leaking compressor however is not necessarily a sign it is going to seize.
I could not find the estimated cost on the...
What is going on with the transmission? The 09g vw transmissions have a common problem with the valve body. Are there any trouble codes? Do the transmission problems change if the engine is hot or cold? You may only need a new valve body and not a whole new transmission.
It just came on for the first time, what d...
If you'd like to swing by our shop at 4727 north broadway, just south of lee hill, we can scan the code and go from there.
My air conditioner doesn&#39;t blow cold. ...
It can be dangerous, harmful to the environment, and potentially damaging to your AC system to add refridgerant without the proper equipment. It's better in the long run to spend the money for a certified professional to perform any repair to your air conditioning system.
Won&#39;t start back up after warming up. ...
If you had an issue with fuel delivery and have already changed the pump check the relay. Sometimes the fuel pump relay will operate normally when cold but not function when hot.
The readio will not work unless i have the...
The code may be in your owners manual or you can call your local dealership with your vin number handy and they should be able to tell you what it is.

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