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)

David Messinger
Customer Review
★★★★★
2012 GMC Denali 2500HD - Had to have the transmission rebuilt. After I got truck looked at, I thought it was a quick service and the parts recommended was spot on. This rebuild also included a lifetime warranty, so how can you go wrong with that. Customer service was also great, mechanic followed up asking how truck was running!
Jim huntin
Customer Review
★★★★★
Always great service here everything is fixed right the first time and very professional and under budget!

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)

Mark Davidson
Customer Review
★★★★★
George took care of me while passing through from Saint Louis, had a minor mishap and he took time to get me back on the road within 20 minutes, he saved the day! Highly recommended!!

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)

Great shop with honest prices, and they stand behind their work. - Brandon S. (5 star review on Google)

I've taken a few vehicles there from other places that have messed up on my car. They always fix the issue. They get my vehicle in and out. It does help that I know the issue so they can fix it faster. The price here is AMAZING. They are also military friendly. They do not hassle or push or try to lie to you. Communication is great with them. I will keep coming back to them for all my vehicle needs. - 5 star review on Google

Quick, fast service. They are very helpful and fixed our problem. Helped us with no wait! We are traveling from Indiana to our home in Idaho. - Cathy S. (5 star review on Google)

The fact that this shop isn’t gouging like most others is impressive. I’ve been stolen from a few times before coming to Mr Diesel, With shabby results from the places I’ve been. Thanks to Mr Diesel my 96 12 valve is running better than it ever has as long as Ive owned it. A 660,000 mile truck too mind you. And also because this crew of gentlemen understand the nature of the beast for a welding rig, they got it in and out super fast with purpose. Thank you Mr Diesel, I appreciate you. - 5 star review on Google

Reg McKerlie
Customer Review
★★★★★
We want to thank you for the service you provided us when we broke down just outside of Cheyenne this past Tuesday. We were pulling a 5th wheel with a Ford F-250 super duty. You got us in right away and had us fixed and ready to continue the next day. Thank you so much for helping out of town strangers so quick and professionally. We’re on our way today and will always remember Cheyenne as one city that is full of good and helpful people. Thank you Reg and Sandra McKerlie Pensacola Florida
Tom Carreker
Customer Review
★★★★★
I have a 2002 Dodge Cummins and George and his staff diagnosed my old diesel with a leak from the rear main. I paid Mr. Diesel for the repair and to my dismay I still had a leak. George brought my truck back in and said it was the valve cover gasket and was misdiagnosed. He said the valve cover gasket was going to be repaired free of charge as it was misdiagnosed. This might sound bad however, my truck to this date doesn't leak a drop of oil and has 130k on it. Good crew and very professional!
Tom Carreker
Customer Review
★★★★★
I have a 2006 Jeep Wrangler Rubicon TJ and brought it to George for a transmission replacement. The TJ manual transmission 6 speed is plagued with problems and George didn't know this. His go to transmission builder is Jasper. It took three builds (in and out), which George had to put in and take out to get a tranny, which shifted like factory. I don't blame this on Jasper or Mr. Diesel at all, this is just a horribly problematic transmission Jeep put in TJ's. However George and his crew never waivered and stood by me as the customer and worked with Jasper and made everything right. George and his wrench crew is the most professional bunch of individuals I have run across in a long time. This wrench crew sets the standard for the rest of vehicle repair community. I will always recommend this bunch to repair any of my family or friends vehicle's.
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