Great shop. - Jo Ann M. (5 star review on Google)

These guys are phenomenal! Had them install a transfer case for me and an electrical clip break off after I left their shop. I went back and they found the problem and fixed it right away! Keep it up y'all! - Kevin J. (5 star review on Google)

Fair and quick! Quality work and friendly! I bring my personal and fleet vehicles to My Master Mechanic and have no reason to look elsewhere! I’m very happy! - David S. (recommended on Facebook)

Traveling through on my way to West coast with a horse trailer at a AC compressor go bad. I called in to Mr. Diesel, and they got me in right away. Very nice job--thank you for getting me in and short notice and back on the road. These are very nice people to work with. Good prices, good people, and well knowledged. - Lee D. (5 star review on Google)

George and the crew are the best at what they do! - Dion G. (5 star review on Google)

Very honest and ethical and are people of their word! - Steve B. (4 star review on Google)

Great service and very helpful and respectful will definitely use them again. - Brenden D. (5 star review on Google)

Great people and shop to work with.  - D&Z Garage (4 star review on Google)

Mr Diesel is the BEST place to take a diesel ever! I have taken my 2000 F-350, my husband's 2014 Dodge 3500, both my sons' 2014 Dodge 2500 and 2008 Dodge 2500! Every time it's excellent service and below estimate! I'm gonna have to start taking my gas vehicles there too! - Wanda D. (5 star review on Yelp)

Straight forward bids and fixes stuff when very seldomly it's not 100% the first time. I've taken trucks to George many times and he's always been fair! - Nate D. (5 star review on Google)

I don’t trust taking my truck anywhere else! This shop has taken care of me time and again. These guys have so much knowledge and skill. They provide the best work with the most integrity. - Nick M. (5 star review on Google)

Was in town working when my truck suddenly started leaking exhaust pretty bad, it was preventing turbo compression. Came in on a Friday morning with no appointment, notice or anything, and I was expecting to have to leave my truck at least through the weekend. I got a call a couple hours later...my truck was ready... not only that, the price was unbeatable!! - 5 star review on Google

George and his staff are first class. Very knowledgeable and quick to get you in and out. They deliver quality service at a good price. Highly recommend if you need a diesel mechanic in Cheyenne area. - Josh F. (5 star review on Google)

If you have a diesel, this is the only place to go for service. They have worked on my 7.3L twice and both times have been top shelf. They are above all, honest and will not try to do more than is needed. What they do is also done right and complete. My truck has never run better and nobody will work on my truck but Mr. Diesel. To have a good diesel repair shop that you CAN trust is worth everything. - David W. (5 star review on Google)

Integrity says it all for this shop. We were passing through Cheyenne pulling a fifth wheel and had been dealing with emission problems while headed south from Montana. We pulled into Mr. Diesel at 7:30 am and were back on the road at 7:45am. They scanned our check engine light, deleted the code, assured us we were safe to continue on our trip and charged us nothing. They did it all with an amazing attitude of service. We can't say enough good about them. We had two different Dodge dealers tell us it would be at least a week before they could even look at our truck. - Dick R. (5 star review on Google)