Zack is the greatest! He replaced the 2 batteries in my diesel pusher RV in the parking lot of our Motel in Prescott. He was a total professional, on time and really went the extra mile to get us up and running in an hour. The price was exceptional and the service first class! I would recommend Zack to anybody needing roadside diesel RV repairs! Thanks again Zack, your the best!

I broke down on the side of hwy 169 and this company came to help fast! The mechanic was courteous and friendly, and he had me back on my way in no time! The price was fair and cheaper than what his competitors quoted me! I was very pleased with this timely, affordable, quality repair! Thank you! A++++ mobile diesel repair company!!!!

Zach promised to come, then didnt. I called, he said he just plain forgot. That happens. He promised to come the next day. Again Zach didnt show. He ghosted my next call and never called back later. Not good on his commitments

I have known Zack for many years, he has proven himself to honest and trustworthy in all aspects of his buisness. I have had him work on multiple pieces of equipment I use on a day to day schedule and rely on to earn my living. I highly recommend On the spot diesel for all your repair needs.

I broke down on the side of the road and I called on the spot. They were there very quick. Friendly and professional! I made it home without having to have my car towed! Thank you Zack! Would definitely recommend this company!

Great quality work. Very fast and convenient. Zack was very nice and very willing to help.

Showed up quoted me a price, and that’s exactly what I paid, very good service, very knowledgeable, very friendly

My car stalled on the side of the road. This company was fast to get to me, the mechanic was very kind and honest. He diagnosed the problem changed my fuel filter I was on my way without having to be towed! Thank you! I highly recommend this company!

Broke down on 17 and he came out and diagnosed the problem and drove to Phoenix to get the part did a great job would recommend to anyone.