Sandra Montoya
Customer Review
Great service! We called and took our truck to be diagnosed. They knew right away what was wrong, got the part and put it in. The mechanic stayed late just to make sure he had fixed the problem. Owner treated us well and stayed late to make sure we were happy and satisfied with the service and repair. If you ever in Cheyenne WY and have problems with your diesel truck , stop by you won't be disappointed.
Tylor Pfost
Customer Review
March 10, 2022 in severe weather George, the owner of Mr.Diesel personally went to my home while I was out of town, to diagnose and repair my vehicle. I've been a long time customer here and this is one of the reasons why I continue to give him my business.

5-Star Google Review left by William S.

Good people, great service.

-Adair T. (5-star Google review)

By far the best diesel shop in Cheyenne, they were honest and professional and had quality repair I will always go here for anything I need done from now on, thanks George and team for the honest hard work

-John K. (5-star Google review)

Excellent local shop! 

-Google review left by Will W. 

Awesome Job! These guys really hooked me up. I was driving from Wisconsin to California got 1000 miles into my 2000 mile journey and I needed DEF service. My truck wouldn't even let me drive.. They prioritized us as I called 10 different shops who were all booked 3 weeks out.... ridiculous was able to get back on the road same day as repair. Thanks for saving us! We can't thank you enough! Hope our paths cross again!

- 5-Star Google Review

4-Star Google Rating

- Matthew S.


- George M.

I was traveling with 5th wheel, coming out of mountains , Bad front brakes , Found Mr.Diesel ,George, I'm 62 , and Honestly , the best shop I've been to in 30 years !!! George and his guys got it done , last second in 3 hrs.Quality Parts , Professional!!

- Darrel C.

john kelly
Customer Review
Brokedown on the trip home to Oregon and he was on it the same day truck has never run better. I will go out of my way to have him work on it. 
Jennifer A Mauldin
Customer Review
George and his fine team have been servicing my vehicles since 2016 and have never steered me wrong. They've saved me from being taken advantage of by other more predatory mechanics and have gone above and beyond in making sure my vehicles are well cared for. George and his team have earned my business for life!
Edwin Snell
Customer Review
I honestly can not say enough good things about this shop, the staff and particularly George, the owner. I’m from Georgia and 1600 miles from home. My 2002 Ford Excursion with the 7.3 Powerstroke was hesitating and cutting off when accelerating from a stop. Not good. Not only did George work me in his busy schedule but he went above and beyond what I could have expected. Replaced 2 sensors, topped off the oil, changed fuel and air filters...and when that didn’t work ran diagnostics and stayed with it till it was solved. His prices were very reasonable and he did all this knowing I was not a candidate for future business being from out-of state. I have referred him to the Cheyenne-based business that employs my son. If they are smart they will send their fleet trucks to George! Thanks George and “Dirt”!

Great place! We were driving through on a road trip and needed car repairs asap so we could get back on the road. They got us in immediately and had everything done in an hour. It was so helpful for us, and we appreciated them squeezing us in and getting it done so fast. - Stan D. (5 star review on Google)

If I could give 10 stars I would. They worked me in to fix my A/C, finished in less than half an hour and had the best prices in town. I will definitely be back for any repairs I need in the future. - Anne D. (5 star review on Google)

He did a good job, and because I needed the truck the next day he stayed late to finish the work on it. You don't find that kind of service anywhere. - Id W. (5 star review on Google)

So thankful for everyone at Mr. Diesel & Auto Repair! My husband's deployment plans changed so I found myself traveling across the country with my kids without him- towing my camper with the help of my parents. An already stressful time got MORE stressful mid trip when my truck started having issues that needed repaired. Everyone at Mr Diesel worked so hard to get my truck fixed ASAP and I’m just so grateful. Definitely recommend! - JenniAnne H. (5 star review on Google)

Couldn’t have asked for better service. - Cody L. (5 star review on Google)

Kevin Poledna
Customer Review
I normally don't leave reviews, but this is worth the time and effort to do so. After multiple exhausting visits to the dealer regarding emissions-related problems, I came to Mr. Diesel for help. George personally took the time to explain exactly what was going on, how he needed to fix it, and assured me that I would never have any of those problems again. I trusted him. And he has yet to let me down. George Marcott goes above and beyond each and every visit and is always personally involved in the service/repairs. The kind of services he offers, the attitude he has with customers, and the knowledge he brings are top-notch. There isn't a better place in town to have normal service or serious repair work is done on your truck. Very highly recommended!!
Customer Review
These guys are the best! I took my truck in for a heater core. They did the work and the truck smelled like coolant bad and after the heater core replacement my thermostat was not working right. They had me bring it back and ended up doing a coolant flush and replacing the thermostat with no extra charge to me. I can't tell you how thankful I am that they did this after paying over $760 for the heater core! Really awesome guys and gals over there! They're my go-to repair shop now for sure!
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